ChescoWx
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Here in Chester County the Summer of 2024 was good for the 21st warmest summer across the POR - the top 25 warmest are below .
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Here in Chester County the Summer of 2024 was good for the 21st warmest summer across the POR - the top 25 warmest are below .
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A great weather week ahead as we start September. We should see high temps start below normal and moderate to near normal in the upper 70's by the end of the week. Nightime lows will reach the 40's in some areas tonight and especially tomorrow night in the lower locales of the county. Our next rain chances wait till Friday night. Chester County records for today: High 105 degrees in Phoenixville (1954) / Low 40 degrees at Kennett Square (1909) / Rain 2.24" at Phoenixville (2006)
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A great weather week ahead as we start September. We should see high temps start below normal and moderate to near normal in the upper 70's by the end of the week. Nightime lows will reach the 40's in some areas tonight and especially tomorrow night in the lower locales of the county. Our next rain chances wait till Friday night. Chester County records for today: High 105 degrees in Phoenixville (1954) / Low 40 degrees at Kennett Square (1909) / Rain 2.24" at Phoenixville (2006)
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August finished with below normal temperatures at all 18 stations across Chester County. The average county temperature was 72.6 degrees this was the 62nd coolest August across 132 years of records. The coolest average temperature was at East Nantmeal at 71.1 degrees with the warmest reading at the KOQN West Chester Airport at 74.6 degrees. We had well above normal rainfall at most locations across the county with an average rain total of 7.25" across all stations. This was the 13th wettest average rain total for August on record with 1955 having the greatest average rainfall at 16.00" in the county. The hottest temperature recorded in the county in August was the 97 degrees in Phoenixville on August 1st and the coldest reading was the 45.8 degrees in Warwick Township on August 21. The wettest station was the West Chester MADIS station with 13.16" of rain during the month.
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August finished with below normal temperatures at all 18 stations across Chester County. The average county temperature was 72.6 degrees this was the 62nd coolest August across 132 years of records. The coolest average temperature was at East Nantmeal at 71.1 degrees with the warmest reading at the KOQN West Chester Airport at 74.6 degrees. We had well above normal rainfall at most locations across the county with an average rain total of 7.25" across all stations. This was the 13th wettest average rain total for August on record with 1955 having the greatest average rainfall at 16.00" in the county. The hottest temperature recorded in the county in August was the 97 degrees in Phoenixville on August 1st and the coldest reading was the 45.8 degrees in Warwick Township on August 21. The wettest station was the West Chester MADIS station with 13.16" of rain during the month.
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As today is the last day of the final full summer month it appears like we will fail to see any of the Chester County stations touch the 100 degree mark for the for the 5th straight summer. Our last 100 degree day temperature was at Phoenixville (big surprise) on July 21, 2019. The next highest temperature that day was the 95.6 at West Bradford Twp. This is the longest stretch between a century reading since the 5 years between 1996 through 2000. The longest non-100 degree stretch was the 9 straight summers between 1902 through 1910.
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As today is the last day of the final full summer month it appears like we will fail to see any of the Chester County stations touch the 100 degree mark for the for the 5th straight summer. Our last 100 degree day temperature was at Phoenixville (big surprise) on July 21, 2019. The next highest temperature that day was the 95.6 at West Bradford Twp. This is the longest stretch between a century reading since the 5 years between 1996 through 2000. The longest non-100 degree stretch was the 9 straight summers between 1902 through 1910.
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As today is the last day of the final full summer month it appears like we will fail to see any of the Chester County stations touch the 100 degree mark for the for the 5th straight summer. Our last 100 degree day temperature was at Phoenixville (big surprise) on July 21, 2019. The next highest temperature that day was the 95.6 at West Bradford Twp. This is the longest stretch between a century reading since the 5 years between 1996 through 2000. The longest non-100 degree stretch was the 9 straight summers between 1902 through 1910.
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Near normal temperatures both today and tomorrow before a sharp turn to well below normal temps for the 1st week of September. Best chances for rain will be late tonight with the cold front with a lesser chance tomorrow with the secondary reinforcing front. Chester County Records for today: High 103 degrees at Phoenixville (1953) / Low 37 degrees at Phoenixville (1986) / Rain 4.37" at West Chester (1911)
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Near normal temperatures both today and tomorrow before a sharp turn to well below normal temps for the 1st week of September. Best chances for rain will be late tonight with the cold front with a lesser chance tomorrow with the secondary reinforcing front. Chester County Records for today: High 103 degrees at Phoenixville (1953) / Low 37 degrees at Phoenixville (1986) / Rain 4.37" at West Chester (1911)
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Some spots picked up a little rain last night and overnight. Here in East Nantmeal we picked 0.17" since last evening. Some additional showers are possible this afternoon but our best chances of rain are tomorrow night with the cold frontal passage. Temperatures today will remain below normal in the low to mid-70's. We warm to near normal both Saturday and Sunday before a sharp turn to below normal temps by Labor Day. Many of the lower spots will see low temperatures again in the 40's by Tuesday AM. High Temps for the first week of September will remain in the low to mid 70's. Chester County Records for today: High Temperature 102 degrees at Phoenixville (1953) of note both Coatesville and West Chester also both exceeded 100 degrees to close out the last 2 days of August 1953/ Low Temperature was a chilly 34 degrees at Phoenixville (1986) / Rain 5.04" at Kennett Square (1911)
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Some spots picked up a little rain last night and overnight. Here in East Nantmeal we picked 0.17" since last evening. Some additional showers are possible this afternoon but our best chances of rain are tomorrow night with the cold frontal passage. Temperatures today will remain below normal in the low to mid-70's. We warm to near normal both Saturday and Sunday before a sharp turn to below normal temps by Labor Day. Many of the lower spots will see low temperatures again in the 40's by Tuesday AM. High Temps for the first week of September will remain in the low to mid 70's. Chester County Records for today: High Temperature 102 degrees at Phoenixville (1953) of note both Coatesville and West Chester also both exceeded 100 degrees to close out the last 2 days of August 1953/ Low Temperature was a chilly 34 degrees at Phoenixville (1986) / Rain 5.04" at Kennett Square (1911)
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Below is a bit of a busy slide but for the first time it shows all 30 NWS stations (color coded if you wish to follow your favorite station) with each stations average annual temperature history plotted individually since 1893 thru 2023. The red trend line shows the overall average of all stations. As we have shown before here in Chester County we have seen nearly flat average temperature trends over the last 130+ years. -
Also I ran an analysis on Sellersville with NWS COOP data since 1949. Through yesterday they have an Average Temp of 72.9 this month. Their long term average of all years since 1949 is 73.5 degrees (0.6 degrees lower than avg.) - but of interest their average August Temp just in the most recent 30 year period is actually lower at 72.7 (only 0.2 degrees above avg.) August's seem to have cooled quite a bit in recent years at Sellersville as you can see in the trend lines since 1949!
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Across all 13 NWS COOP/Airport and MADIS stations across Chester County..and also here in EN - all stations through yesterday are running between no less than 0.5 degrees below normal to as much as 2.7 degrees below normal. Below are the averages this month and the negative departure from normal for August. Atglen 71.6 (1.3) / Chester Springs 71.2 (2.2) / Devault 72.1 (1.7) / Glenmoore 71.6 (1.2) / Kennett Square 71.5 (1.5) / Longwood Gardens 72.2 (1.3) / West Bradford Twp. 71.1 (1.8) / Nottingham 71.0 (2.0) / Warwick Twp 70.3 (2.7) / West Chester 72.0 (2.1) / West Grove 72.4 (1.4) East Nantmeal 71.1 (1.5) / KMQS (Coatesville) 72.4 (0.5) / KOQN (West Chester) 74.1 (2.1) Phoenixville 73.1 (1.8) and Spring City NWS Coop site at 73.4 (1.2)
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Correction RedSky - Phoenixville NWS COOP station is currently at 73.1 degrees thru yesterday their 30 year normal August is 74.9 degrees - which is actually 1.8 degrees BELOW normal for August. Even looking at their 130+ year averages they are running 0.4 degrees below normal. Also -Perkasie is at 72.0 their August Average is 72.8 - so they are also 0.8 degrees below normal this August. To further drive home the clearly below normal month at most locations. Across all 13 NWS COOP/Airport and MADIS stations across Chester County..and also here in EN - all stations through yesterday are running between no less than 0.5 degrees below normal to as much as 2.7 degrees below normal. Below are the averages this month and the negative departure from normal for August. Atglen 71.6 (1.3) / Chester Springs 71.2 (2.2) / Devault 72.1 (1.7) / Glenmoore 71.6 (1.2) / Kennett Square 71.5 (1.5) / Longwood Gardens 72.2 (1.3) / West Bradford Twp. 71.1 (1.8) / Nottingham 71.0 (2.0) / Warwick Twp 70.3 (2.7) / West Chester 72.0 (2.1) / West Grove 72.4 (1.4) East Nantmeal 71.1 (1.5) / KMQS (Coatesville) 72.4 (0.5) / KOQN (West Chester) 74.1 (2.1) and Spring City NWS Coop site at 73.4 (1.2)
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I am superstitious so you know it!! Just can't believe they are running Walker out there again today! Let's hope this is the end!!
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Today will be our last hot day for a while as many spots could touch the 90 degree mark which for some may be the last one of the season. The cold front will cross the region this evening but stall south of the area and creep back north as a warm front over the weekend. Best chance of rain and some could be heavy in any t-storms looks to be late tonight. Temps tomorrow will be sharply cooler with highs in the 70's...a few degrees warmer but not far from normal temps for the weekend before a turn to cooler again by Labor Day and the new work week. Chester County Records for today: High 100 degrees at Phoenixville (1948) / Record Low 38 degrees at Coatesville (1982) / Rain 8.00" at Phoenixville (2011)
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Today will be our last hot day for a while as many spots could touch the 90 degree mark which for some may be the last one of the season. The cold front will cross the region this evening but stall south of the area and creep back north as a warm front over the weekend. Best chance of rain and some could be heavy in any t-storms looks to be late tonight. Temps tomorrow will be sharply cooler with highs in the 70's...a few degrees warmer but not far from normal temps for the weekend before a turn to cooler again by Labor Day and the new work week. Chester County Records for today: High 100 degrees at Phoenixville (1948) / Record Low 38 degrees at Coatesville (1982) / Rain 8.00" at Phoenixville (2011)
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UHI FTW....look outside of the heat island for reality
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A brief warm up underway across the area today. Mid 80's today with many spots reaching the 90's tomorrow. But a quick cool down as Thursday and Friday have temps back below normal in the 70's for high temps. Small chances of showers with the front Wednesday night thru Thursday. Chester County Daily Records for Today: High 100 degrees at Phoenixville (1948) / Low 42 degrees also at Phoenixville (1944) / Rain 6.94" at Glenmoore (2011) from the remnants of Hurricane Irene that impacted the area.
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A brief warm up underway across the area today. Mid 80's today with many spots reaching the 90's tomorrow. But a quick cool down as Thursday and Friday have temps back below normal in the 70's for high temps. Small chances of showers with the front Wednesday night thru Thursday. Chester County Daily Records for Today: High 100 degrees at Phoenixville (1948) / Low 42 degrees also at Phoenixville (1944) / Rain 6.94" at Glenmoore (2011) from the remnants of Hurricane Irene that impacted the area.
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Wunderground does not QC those readings. Lots of folks on that site have poor siting issues or heat shield problems. The Highs on Sunday across Chester County were mostly in low 80's in higher county spots - Some NWS MADIS station reports from Sunday included West Grove 80.2/ Atglen 80.9/ Glenmoore 82.3 / Kennett Square 82.2 and KMQS Airport 82.2
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Yesterday made it 17 of the last 19 days with below normal temperatures for August. We turn that around starting today through Wednesday before we fall back below normal to close out the month next weekend. Slight rain chances Wednesday night through Thursday. Chester County Records for today: High 100 degrees at Phoenixville (1948) / Low 40 degrees also at Phoenixville (1944) / Rain 2.91" at Coatesville 1SW (1908)
