TheClimateChanger

Is there any way someone could get a large mirror, maybe using a drone, to reflect sunlight onto the Central Park ASOS?

It's also the half-way point for 2025. Through the first 6 months, PIT is running 3.8F cooler than last year's record-breaking pace. Still well above the long-term mean, checking in at 33th place in the threaded record (9th at the airport, tied with 1953 - the first full year of records at PIT). Similar story at Morgantown. The mean temperature of 50.5F ties for 22nd warmest and is 3.4F cooler than last year's record-pace. This list includes only years with less than 30 missing days. Wheeling is currently tied for 11th warmest with 2016, despite a 3.3F dropoff from last year. This ranking is obviously aided by the lengthy gap in the records, as years like 1990, 1991 and 1998 would certainly be in the mix otherwise (perhaps some from the late 80s as well). Also, no temperature records prior to 1900.

Overall, it was a wet June regionwide, most notably at Morgantown (see below). The 8.65" of rainfall there was good for 4th place overall, with records dating all the way back to 1872 [albeit with some gaps]! 1939 must have been insanely wet. Most other climate sites generally finished between about 12th and 25th place in the ranking of wettest Junes. I suspect some areas outside of the official observations, especially in far southwest Pennsylvania and portions of West Virginia, saw 10" or more of rainfall this month.

Revisiting June, finished at 73.1F at PIT, which, as noted, was the warmest since observations have been taken at the airport, and tied for 11th warmest overall. Elsewhere across the region, it tied for 4th warmest in the Morgantown area threaded record. It should be noted there is no data for 1943, which appears to have been a very warm month. 1934, which holds the top spot in both the Pittsburgh and Wheeling station threads, is tied for 15th place with 1949 & 2014 (72.6F) in the Morgantown threaded record. Dubois, with a shorter POR, finished tied for 4th warmest with 1976. A little skeptical of the ranking for 1976, seeing as that is said to have been the coldest summer on record at PIT, but that's what the official data shows. The record of 69.2F was set just last year. Wheeling finished tied with last year for 7th warmest June. There's a pretty big gap in the records here between 1953 and 1998; however, there really only appear to be a few candidate Junes for inclusion on this list in that time frame (1967, 1994, perhaps 1991). Another 0.1F would have raised this year to 4th warmest, as there is currently a 3-way tie for 4th place (1952, 1949, 1921) at 72.9F. New Philadelphia, Ohio, another short POR site, finished as 2nd warmest behind 2016. Yes, those 2016 readings were coming in quite high there relative to most places.

That's why I was hesitant to point it out. Always a chance for an all-day cloud and rain event. Even a couple of hours of sun would have easily sent the temperature up to 80F with mid-morning readings in the mid 70s. But probably too little, too late today.

The usual Allegheny County flash flood warning in effect. Flash Flood Warning PAC003-125-011745- /O.NEW.KPBZ.FF.W.0095.250701T1451Z-250701T1745Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Pittsburgh PA 1051 AM EDT Tue Jul 1 2025 The National Weather Service in Pittsburgh has issued a * Flash Flood Warning for... Central Allegheny County in southwestern Pennsylvania... Central Washington County in southwestern Pennsylvania... * Until 145 PM EDT. * At 1051 AM EDT, Doppler radar indicated thunderstorms producing heavy rain over Wilkinsburg, or near Penn Hills, moving east at 20 mph. Between 0.5 and 1 inch of rain has fallen. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Pittsburgh, Penn Hills, Mount Lebanon, Bethel Park, Ross Township, McCandless Township, Monroeville, McMurray, McKeesport, Canonsburg, Gastonville, Shaler Township, Plum, West Mifflin, North Side Pittsburgh, Baldwin, Upper St. Clair, Hampton Township, Scott Township and Wilkinsburg. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don`t drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 4023 8027 4039 8026 4057 8000 4058 7977 4055 7977 4055 7974 4053 7971 4039 7975 4039 7976 4037 7977 4030 7979 4029 7978 4028 7980 4026 7979 4024 7981 4023 7980 FLASH FLOOD...RADAR INDICATED $$ MLB

Wow, 79 in Phoenix in 1911. And a few days later, a massive heat wave spread all across the eastern U.S. I just looked at the records from the Phoenix area for that month and it was 9.4F colder than the present normals.

Certainly was a very impressive period, with departures in excess of 8F in spots. I wonder if it would be possible to see such large deviations in a summer month for a full 4 weeks. That would be nuts!

This June was miles hotter at Charlotteburg Reservoir than anything observed in 1980. Looks like in 1980, you could beat the heat by traveling an hour or so outside the urban heat island, while in 2025, the temperatures are much more uniform even way out in Passaic County. Climatological Data for CHARLOTTEBURG RESERVOIR, NJ - June 2025 Click column heading to sort ascending, click again to sort descending. Sum 2372 1802 - - 47 190 1.47 0.0 - Average 79.1 60.1 69.6 2.3 - - - - 0.0 Normal 77.8 56.7 67.3 - 51 118 4.85 M - Above Normals represent the month through 2025-06-30. 2025-06-01 62 46 54.0 -9.2 11 0 M 0.0 0 2025-06-02 65 43 54.0 -9.5 11 0 0.01 M 0 2025-06-03 71 45 58.0 -5.7 7 0 0.00 0.0 0 2025-06-04 80 50 65.0 1.0 0 0 0.00 0.0 0 2025-06-05 86 58 72.0 7.7 0 7 0.00 0.0 0 2025-06-06 89 64 76.5 11.9 0 12 0.00 0.0 0 2025-06-07 86 62 74.0 9.1 0 9 M 0.0 0 2025-06-08 76 58 67.0 1.8 0 2 M 0.0 0 2025-06-09 76 58 67.0 1.5 0 2 M M 0 2025-06-10 65 58 61.5 -4.3 3 0 0.57 M M 2025-06-11 77 55 66.0 -0.1 0 1 0.01 M M 2025-06-12 80 62 71.0 4.6 0 6 0.00 M M 2025-06-13 87 60 73.5 6.8 0 9 0.00 M M 2025-06-14 80 59 69.5 2.6 0 5 0.02 M M 2025-06-15 66 56 61.0 -6.2 4 0 0.04 M M 2025-06-16 62 56 59.0 -8.5 6 0 0.01 M M 2025-06-17 64 59 61.5 -6.3 3 0 0.07 M M 2025-06-18 66 60 63.0 -5.1 2 0 0.21 M M 2025-06-19 82 65 73.5 5.2 0 9 0.39 M M 2025-06-20 88 64 76.0 7.4 0 11 0.07 M M 2025-06-21 82 66 74.0 5.1 0 9 M M M 2025-06-22 87 72 79.5 10.4 0 15 M M M 2025-06-23 87 69 78.0 8.6 0 13 M M 0 2025-06-24 97 71 84.0 14.4 0 19 0.00 0.0 0 2025-06-25 97 71 84.0 14.2 0 19 0.00 0.0 0 2025-06-26 95 72 83.5 13.4 0 19 0.00 M M 2025-06-27 76 61 68.5 -1.8 0 4 0.03 M M 2025-06-28 70 59 64.5 -6.0 0 0 0.04 M M 2025-06-29 84 61 72.5 1.8 0 8 0.00 M M 2025-06-30 89 62 75.5 4.6 0 11 0.00 M M

Climatological Data for CHARLOTTEBURG RESERVOIR, NJ - June 1980 Click column heading to sort ascending, click again to sort descending. Sum 2187 1486 - - 151 43 2.99 0.0 - Average 72.9 49.5 61.2 -6.1 - - - - 0.0 Normal 77.8 56.7 67.3 - 51 118 4.85 M - 1980-06-01 71 56 63.5 0.3 1 0 0.30 0.0 0 1980-06-02 77 60 68.5 5.0 0 4 0.31 0.0 0 1980-06-03 76 59 67.5 3.8 0 3 0.02 0.0 0 1980-06-04 79 57 68.0 4.0 0 3 0.60 0.0 0 1980-06-05 66 47 56.5 -7.8 8 0 0.00 0.0 0 1980-06-06 69 41 55.0 -9.6 10 0 0.00 0.0 0 1980-06-07 71 51 61.0 -3.9 4 0 0.32 0.0 0 1980-06-08 69 57 63.0 -2.2 2 0 0.09 0.0 0 1980-06-09 75 37 56.0 -9.5 9 0 0.23 0.0 0 1980-06-10 55 43 49.0 -16.8 16 0 0.37 0.0 0 1980-06-11 58 34 46.0 -20.1 19 0 0.02 0.0 0 1980-06-12 59 35 47.0 -19.4 18 0 0.00 0.0 0 1980-06-13 68 42 55.0 -11.7 10 0 0.00 0.0 0 1980-06-14 73 42 57.5 -9.4 7 0 0.00 0.0 0 1980-06-15 79 49 64.0 -3.2 1 0 T 0.0 0 1980-06-16 79 52 65.5 -2.0 0 1 0.05 0.0 0 1980-06-17 67 45 56.0 -11.8 9 0 0.00 0.0 0 1980-06-18 71 43 57.0 -11.1 8 0 0.00 0.0 0 1980-06-19 70 44 57.0 -11.3 8 0 0.00 0.0 0 1980-06-20 74 49 61.5 -7.1 3 0 0.07 0.0 0 1980-06-21 63 53 58.0 -10.9 7 0 T 0.0 0 1980-06-22 72 44 58.0 -11.1 7 0 0.00 0.0 0 1980-06-23 77 45 61.0 -8.4 4 0 0.00 0.0 0 1980-06-24 82 54 68.0 -1.6 0 3 0.00 0.0 0 1980-06-25 85 64 74.5 4.7 0 10 0.00 0.0 0 1980-06-26 84 56 70.0 -0.1 0 5 0.00 0.0 0 1980-06-27 82 59 70.5 0.2 0 6 0.00 0.0 0 1980-06-28 86 53 69.5 -1.0 0 5 0.00 0.0 0 1980-06-29 75 57 66.0 -4.7 0 1 0.00 0.0 0 1980-06-30 75 58 66.5 -4.4 0 2 0.61 0.0 0 Climatological Data for CHARLOTTEBURG RESERVOIR, NJ - July 1980 Click column heading to sort ascending, click again to sort descending. Sum 2496 1806 - - 15 157 3.15 0.0 - Average 80.5 58.3 69.4 -2.7 - - - - 0.0 Normal 82.9 61.4 72.1 - 6 228 4.59 M - 1980-07-01 74 54 64.0 -7.0 1 0 0.01 0.0 0 1980-07-02 78 54 66.0 -5.2 0 1 0.00 0.0 0 1980-07-03 75 62 68.5 -2.9 0 4 0.13 0.0 0 1980-07-04 71 60 65.5 -6.0 0 1 0.02 0.0 0 1980-07-05 82 54 68.0 -3.7 0 3 0.00 0.0 0 1980-07-06 81 58 69.5 -2.3 0 5 1.02 0.0 0 1980-07-07 70 46 58.0 -13.9 7 0 0.00 0.0 0 1980-07-08 75 52 63.5 -8.5 1 0 0.00 0.0 0 1980-07-09 79 58 68.5 -3.6 0 4 T 0.0 0 1980-07-10 81 61 71.0 -1.2 0 6 0.00 0.0 0 1980-07-11 80 61 70.5 -1.8 0 6 0.00 0.0 0 1980-07-12 80 60 70.0 -2.3 0 5 0.21 0.0 0 1980-07-13 73 49 61.0 -11.4 4 0 0.00 0.0 0 1980-07-14 78 48 63.0 -9.4 2 0 0.00 0.0 0 1980-07-15 83 55 69.0 -3.5 0 4 0.00 0.0 0 1980-07-16 83 66 74.5 2.0 0 10 0.41 0.0 0 1980-07-17 88 68 78.0 5.5 0 13 0.01 0.0 0 1980-07-18 84 62 73.0 0.5 0 8 0.11 0.0 0 1980-07-19 84 59 71.5 -1.0 0 7 0.00 0.0 0 1980-07-20 85 62 73.5 1.0 0 9 0.00 0.0 0 1980-07-21 91 69 80.0 7.5 0 15 0.00 0.0 0 1980-07-22 93 65 79.0 6.5 0 14 0.00 0.0 0 1980-07-23 86 63 74.5 2.0 0 10 0.62 0.0 0 1980-07-24 78 55 66.5 -5.9 0 2 0.00 0.0 0 1980-07-25 80 52 66.0 -6.4 0 1 0.00 0.0 0 1980-07-26 84 56 70.0 -2.3 0 5 0.00 0.0 0 1980-07-27 85 59 72.0 -0.3 0 7 0.00 0.0 0 1980-07-28 82 58 70.0 -2.2 0 5 0.00 0.0 0 1980-07-29 78 61 69.5 -2.7 0 5 0.08 0.0 0 1980-07-30 75 63 69.0 -3.1 0 4 0.53 0.0 0 1980-07-31 80 56 68.0 -4.0 0 3 0.00 0.0 0 Climatological Data for CHARLOTTEBURG RESERVOIR, NJ - August 1980 Click column heading to sort ascending, click again to sort descending. Sum 2460 1785 - - 20 135 1.81 0.0 - Average 79.4 57.6 68.5 -1.9 - - - - 0.0 Normal 81.3 59.5 70.4 - 13 181 4.33 M - 1980-08-01 79 59 69.0 -3.0 0 4 0.00 0.0 0 1980-08-02 80 62 71.0 -0.9 0 6 0.00 0.0 0 1980-08-03 83 62 72.5 0.7 0 8 1.14 0.0 0 1980-08-04 83 63 73.0 1.3 0 8 0.00 0.0 0 1980-08-05 84 63 73.5 1.8 0 9 0.00 0.0 0 1980-08-06 89 64 76.5 4.9 0 12 0.10 0.0 0 1980-08-07 82 59 70.5 -1.0 0 6 0.00 0.0 0 1980-08-08 84 63 73.5 2.1 0 9 T 0.0 0 1980-08-09 86 67 76.5 5.2 0 12 0.26 0.0 0 1980-08-10 83 55 69.0 -2.2 0 4 0.00 0.0 0 1980-08-11 78 56 67.0 -4.1 0 2 0.07 0.0 0 1980-08-12 80 66 73.0 2.0 0 8 0.02 0.0 0 1980-08-13 76 55 65.5 -5.4 0 1 0.00 0.0 0 1980-08-14 76 53 64.5 -6.3 0 0 0.00 0.0 0 1980-08-15 76 55 65.5 -5.2 0 1 T 0.0 0 1980-08-16 76 55 65.5 -5.1 0 1 0.04 0.0 0 1980-08-17 67 47 57.0 -13.5 8 0 0.00 0.0 0 1980-08-18 76 50 63.0 -7.3 2 0 0.00 0.0 0 1980-08-19 71 55 63.0 -7.2 2 0 0.04 0.0 0 1980-08-20 78 58 68.0 -2.1 0 3 0.13 0.0 0 1980-08-21 70 54 62.0 -7.9 3 0 0.00 0.0 0 1980-08-22 67 57 62.0 -7.8 3 0 T 0.0 0 1980-08-23 72 53 62.5 -7.1 2 0 0.01 0.0 0 1980-08-24 80 51 65.5 -4.0 0 1 0.00 0.0 0 1980-08-25 81 53 67.0 -2.3 0 2 0.00 0.0 0 1980-08-26 83 52 67.5 -1.6 0 3 0.00 0.0 0 1980-08-27 86 56 71.0 2.0 0 6 0.00 0.0 0 1980-08-28 86 63 74.5 5.7 0 10 0.00 0.0 0 1980-08-29 85 57 71.0 2.4 0 6 0.00 0.0 0 1980-08-30 80 59 69.5 1.1 0 5 0.00 0.0 0 1980-08-31 83 63 73.0 4.8 0 8 0.00 0.0 0 Reliable observation times are not available prior to 1982.

I don't know the observations from Jersey City and Passaic County don't strike me as very warm for those years. If there was a Sonoran heat release, it must have skipped over those areas. Climatological Data for JERSEY CITY, NJ - June 1980 Click column heading to sort ascending, click again to sort descending. Sum 2216 1716 - 67 91 2.73 0.0 - Average 73.9 57.2 65.5 - - - - 0.0 Normal M M M M M M M - 1980-06-01 81 62 71.5 0 7 T 0.0 0 1980-06-02 79 65 72.0 0 7 0.00 0.0 0 1980-06-03 82 65 73.5 0 9 1.25 0.0 0 1980-06-04 72 59 65.5 0 1 0.00 0.0 0 1980-06-05 71 55 63.0 2 0 0.00 0.0 0 1980-06-06 69 53 61.0 4 0 T 0.0 0 1980-06-07 74 60 67.0 0 2 0.47 0.0 0 1980-06-08 74 50 62.0 3 0 0.52 0.0 0 1980-06-09 62 44 53.0 12 0 0.47 0.0 0 1980-06-10 58 49 53.5 11 0 0.00 0.0 0 1980-06-11 64 45 54.5 10 0 0.00 0.0 0 1980-06-12 70 47 58.5 6 0 0.00 0.0 0 1980-06-13 68 52 60.0 5 0 0.00 0.0 0 1980-06-14 80 51 65.5 0 1 0.00 0.0 0 1980-06-15 82 63 72.5 0 8 T 0.0 0 1980-06-16 69 60 64.5 0 0 0.00 0.0 0 1980-06-17 68 53 60.5 4 0 0.00 0.0 0 1980-06-18 67 55 61.0 4 0 0.00 0.0 0 1980-06-19 69 55 62.0 3 0 0.00 0.0 0 1980-06-20 68 55 61.5 3 0 T 0.0 0 1980-06-21 76 55 65.5 0 1 0.00 0.0 0 1980-06-22 81 58 69.5 0 5 0.00 0.0 0 1980-06-23 80 62 71.0 0 6 0.00 0.0 0 1980-06-24 79 65 72.0 0 7 0.00 0.0 0 1980-06-25 86 68 77.0 0 12 0.00 0.0 0 1980-06-26 75 63 69.0 0 4 0.00 0.0 0 1980-06-27 90 64 77.0 0 12 0.00 0.0 0 1980-06-28 73 60 66.5 0 2 0.00 0.0 0 1980-06-29 72 63 67.5 0 3 0.02 0.0 0 1980-06-30 77 60 68.5 0 4 T 0.0 0 Reliable observation times are not available prior to 1982. Climatological Data for JERSEY CITY, NJ - July 1980 Click column heading to sort ascending, click again to sort descending. Sum 2526 2034 - 0 272 5.01 0.0 - Average 81.5 65.6 73.5 - - - - 0.0 Normal M M M M M M M - 1980-07-01 73 58 65.5 0 1 0.00 0.0 0 1980-07-02 80 64 72.0 0 7 1.17 0.0 0 1980-07-03 72 66 69.0 0 4 0.13 0.0 0 1980-07-04 84 65 74.5 0 10 0.00 0.0 0 1980-07-05 79 65 72.0 0 7 0.16 0.0 0 1980-07-06 75 63 69.0 0 4 0.00 0.0 0 1980-07-07 79 55 67.0 0 2 0.00 0.0 0 1980-07-08 80 63 71.5 0 7 T 0.0 0 1980-07-09 82 64 73.0 0 8 0.00 0.0 0 1980-07-10 76 67 71.5 0 7 0.00 0.0 0 1980-07-11 84 65 74.5 0 10 0.00 0.0 0 1980-07-12 79 66 72.5 0 8 T 0.0 0 1980-07-13 82 57 69.5 0 5 0.00 0.0 0 1980-07-14 81 61 71.0 0 6 0.00 0.0 0 1980-07-15 85 65 75.0 0 10 0.00 0.0 0 1980-07-16 91 71 81.0 0 16 0.02 0.0 0 1980-07-17 85 67 76.0 0 11 0.10 0.0 0 1980-07-18 83 70 76.5 0 12 0.00 0.0 0 1980-07-19 78 69 73.5 0 9 0.00 0.0 0 1980-07-20 95 73 84.0 0 19 0.00 0.0 0 1980-07-21 94 79 86.5 0 22 0.00 0.0 0 1980-07-22 83 67 75.0 0 10 0.45 0.0 0 1980-07-23 76 68 72.0 0 7 0.03 0.0 0 1980-07-24 83 64 73.5 0 9 0.00 0.0 0 1980-07-25 85 63 74.0 0 9 0.00 0.0 0 1980-07-26 85 68 76.5 0 12 T 0.0 0 1980-07-27 80 69 74.5 0 10 0.00 0.0 0 1980-07-28 76 68 72.0 0 7 0.00 0.0 0 1980-07-29 73 64 68.5 0 4 2.95 0.0 0 1980-07-30 83 65 74.0 0 9 0.00 0.0 0 1980-07-31 85 65 75.0 0 10 0.00 0.0 0 Reliable observation times are not available prior to 1982. Climatological Data for JERSEY CITY, NJ - August 1980 Click column heading to sort ascending, click again to sort descending. Sum 2469 1995 - 2 225 4.01 0.0 - Average 79.6 64.4 72.0 - - - - 0.0 Normal M M M M M M M - 1980-08-01 78 68 73.0 0 8 T 0.0 0 1980-08-02 86 66 76.0 0 11 2.50 0.0 0 1980-08-03 88 64 76.0 0 11 T 0.0 0 1980-08-04 83 70 76.5 0 12 0.00 0.0 0 1980-08-05 84 70 77.0 0 12 0.04 0.0 0 1980-08-06 85 69 77.0 0 12 0.00 0.0 0 1980-08-07 86 68 77.0 0 12 0.00 0.0 0 1980-08-08 89 72 80.5 0 16 0.00 0.0 0 1980-08-09 86 72 79.0 0 14 0.00 0.0 0 1980-08-10 82 65 73.5 0 9 T 0.0 0 1980-08-11 84 68 76.0 0 11 0.46 0.0 0 1980-08-12 84 68 76.0 0 11 0.03 0.0 0 1980-08-13 79 63 71.0 0 6 0.00 0.0 0 1980-08-14 76 63 69.5 0 5 0.00 0.0 0 1980-08-15 77 68 72.5 0 8 0.03 0.0 0 1980-08-16 72 58 65.0 0 0 0.00 0.0 0 1980-08-17 77 51 64.0 1 0 0.00 0.0 0 1980-08-18 72 60 66.0 0 1 T 0.0 0 1980-08-19 74 62 68.0 0 3 0.03 0.0 0 1980-08-20 67 62 64.5 0 0 0.72 0.0 0 1980-08-21 68 60 64.0 1 0 0.00 0.0 0 1980-08-22 73 60 66.5 0 2 0.00 0.0 0 1980-08-23 74 58 66.0 0 1 0.00 0.0 0 1980-08-24 83 59 71.0 0 6 0.00 0.0 0 1980-08-25 82 65 73.5 0 9 0.00 0.0 0 1980-08-26 80 62 71.0 0 6 0.00 0.0 0 1980-08-27 87 66 76.5 0 12 0.00 0.0 0 1980-08-28 86 65 75.5 0 11 0.00 0.0 0 1980-08-29 71 63 67.0 0 2 0.00 0.0 0 1980-08-30 77 64 70.5 0 6 0.00 0.0 0 1980-08-31 79 66 72.5 0 8 0.20 0.0 0 Reliable observation times are not available prior to 1982.

Definitely living up to its billing as the swamp. I was shocked with widespread 100-110F heat indices, that there is not even a heat advisory. I think most places in the US would melt in those conditions. Yikes.

Looks like those were mostly urban heat island driven heat waves. Much cooler in the 'burbs and sticks back then.

With that said, still a far cry from the olden days of the 2010s, when DCA would far outpace all other sites in the CWA not named "Maryland Science Center." Looks like they got most of that so-called UHI in check at National Airport. At the height of its urban heating days, in 2015, it was 1.5F warmer than any other site. Even beating DMH by 1.8F. With the 2015 sensor in place, would probably be making a run for record warmest. 2025 2010 2015

Surprised to see DCA is only running +0.5F for the month. Looks to be the lowest of all sites (including reporting cooperative observations) in the IWX CWA, with the majority of stations running between +1.5F and 3.5F. There were a couple stations with an anomaly close to that of DCA, and a few warm outliers (> +4F), but DCA looks to have the lowest anomaly of all sites. It is worth noting that the "normal" is 0.5F above the 1991-2020 mean, so if not for that added warming from NOAA, it would be +1.0F for the month and more in line with surrounding sites. Most of the co-op "normals" are just based on simple averages, I do believe. As an aside, I always cringe when people object to calling it a "normal" and instead call it "average" when it's NOT an average. The justification being there's no such thing as normal in climate, ignoring that the term has a specific meaning in this context, and calling it an average is just plain incorrect. I have seen some stations where the "normal" is as much as 1.5F above the 1991-2020 mean.

Looking at the numbers, mean summertime high temperatures for the most recent 15 years (2010-2024) are about 1.5-2.5F warmer in most places in the eastern US, compared to the preceding 15 years (1995-2009). Have to wonder how much of that is attributable to a climate signal and how much of that is attributable to the 2010 amendments to the Clean Air Act.

This is a good point. I remember in the 1990s, we had "triple H" weather - hazy, hot and humid, as though haze were a byproduct of hot and humid weather rather than a noxious soup of industrial chemicals. It was common for airport visibility to be 5-7 miles in heat domes, sometimes even 3-5 miles. Compared to today's atmosphere, you don't see such things. In fact, it used to be northwest flow would bring in clean, crisp, unpolluted air from the hinterlands. Now it brings in toxic wildfire smoke and particulates. So more often than not, we wind up with hazy, cool and dry weather, instead of the opposite.

Some very impressive anomalies out there, with several sites reporting temperatures as much as 5-7F above the 1991-2020 mean. Very impressive deviations relative to normal for a summertime month. The New York City metro area has actually been relatively cool compared to many locales. Widening out a bit (not depicted), the west also has seen similar departures relative to normal, despite a recent cold snap that brought snow to the higher elevations. Looks like this could be one of the warmest Junes on record for the CONUS as a whole. Although I highly doubt we will unseat 2021 for the record warmest, which had some truly insane +6-8F anomalies across much of the intermountain west.

I mean this is just an anthropocene signal, no? Looks like something a climate model would spit out with a cooling hole in July over the heavy agricultural areas due to the unnatural densities of corn and soybeans (and the resulting unnatural levels of evapotranspiration) and irrigation effects, enhanced warming over the arid west with rapid winter warming east of the Rockies.

Looks like it. Should finish around 73.1F, which would match 1925 for 11th hottest in the full threaded record and make it the hottest since 1943 in the threaded record.

Up to 72.9F on the month at PIT for the mean temperature, matching 1994 as the highest in June since 1967 (73.0F) and surpassing last year’s final average by 0.1F. Pretty impressive turnaround considering the cold start to the month - we had accumulated an aggregate deficit of 22F from the normal value in just the first 2 days of the month.

Made it down to 69F before midnight standard time, which was also today’s low. Although only at 9 in a row, I’m interested in seeing how many 80+ days we string together. Seemingly no end in sight, though. Strung together 37 in a row in 2020.

Certainly, keeping a close eye on the temperatures here as we close out the books on the month of June. It looks like June 2025 will go down in the weather annals as one of the hottest on record. In Southeast Michigan, it looks like Flint and Saginaw will see top 10 heat, and Detroit should finish up around that number in the means when all is said & done. Same with nearby Lansing, where threaded climate records extend back to 1863. In Saginaw, this could be the 2nd hottest June since 1949 (behind only 2005) if current forecasts hold! Final June 90F count should be interesting as well. Detroit is up to 4 on the month - can they reel off a couple more? In @Spartmanland, Dayton is up to 6, all in a row. Today should make that 7 in a row, and there's a chance for one or two more before the month is through. Haven't seen more than 7 90+ days at Dayton in the month of June since 1994. I know @Spartmanis a big 90-degree enthusiast, and hater of clouds, rain and sub-90 degree readings, so he must be loving this stretch. Suffice it to say, 2017's disastrous 3-day total will not be repeated in 2025.

Let's look at May 2025: xMacis reveals three NOAA stations in Chester County, with a mean temperature of 61.5F. So it's true that the reported mean temperature is higher than the mean of these three stations. But the opposite is true in just about every other county in Pennsylvania.

@chubbs - this is all a bunch of subterfuge. In the vast majority of cases, NOAA systematically reduces the reported temperatures from the observed temperatures on a county-by-county basis, often in ways that make little logical sense. Chester County may very well be the only county in Pennsylvania where the opposite is true. So if there is a conspiracy, it's in the opposite direction as the one presupposed with this analysis.