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Climatological Peak Dates

snowman21

By snowman21,
in New England

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snowman21

snowman21

Posted
Posted

For many of us the climatological peak occurs this week, and thus begins the descent towards winter. Here are some peak dates across New England...

                                                     --- HIGHEST --- 
ID  ST  NAME                            ELEV   PEAK   MEAN   MAX  MIN
--- --  ------------------------------- ----  ------  ----   ---  ---
HIE NH  WHITEFIELD MT WASHINGTON AP     1074  JUL 11  65.1    79   52
BML NH  BERLIN MUNI AP                  1158  JUL 14  64.8    79   51
MLT ME  MILLINOCKET FAA AP               407  JUL 16  68.4    79   58
1V4 VT  SAINT JOHNSBURY                  700  JUL 16  70.3    82   59
VSF VT  SPRINGFIELD HARTNESS AP          578  JUL 16  69.3    81   57
MPV VT  MONTPELIER AP                   1126  JUL 17  67.4    79   56
DAW NH  ROCHESTER SKYHAVEN AP            323  JUL 18  70.4    82   59
BTV VT  BURLINGTON WSO AP                330  JUL 18  70.9    81   61
MVL VT  MORRISVILLE STOWE STATE AP       732  JUL 18  68.1    80   56
MMK CT  MERIDEN MARKHAM MUNI AP          103  JUL 19  72.9    84   62
AQW MA  NORTH ADAMS                      652  JUL 19  69.3    81   58
ORE MA  ORANGE MUNI AP                   555  JUL 19  69.9    82   58
OWD MA  NORWOOD MEM AP                    50  JUL 19  71.1    83   59
IZG ME  FRYEBURG E SLOPES AP             445  JUL 19  68.7    81   56
DDH VT  BENNINGTON MORSE ST AP           826  JUL 19  68.5    80   57
IJD CT  WILLIMANTIC WINDHAM AP           247  JUL 20  72.0    83   62
BDL CT  HARTFORD                         190  JUL 21  74.0    85   63
DXR CT  DANBURY MUNI AP                  457  JUL 21  71.8    82   61
HFD CT  HARTFORD BRAINARD FLD             20  JUL 21  74.5    84   65
BVY MA  BEVERLY MUNI AP                  108  JUL 21  70.8    80   61
FIT MA  FITCHBURG MUNI AP                348  JUL 21  72.7    84   62
LWM MA  LAWRENCE MUNI AP                 149  JUL 21  72.2    82   62
PYM MA  PLYMOUTH MUNI AP                 149  JUL 21  71.5    82   62
TAN MA  TAUNTON MUNI AP                   43  JUL 21  72.1    83   61
FVE ME  FRENCHVILLE AROOSTOOK AP         988  JUL 21  65.0    75   56
HUL ME  HOULTON AP                       476  JUL 21  66.2    78   54
AFN NH  JAFFREY                         1080  JUL 21  68.8    79   58
MWN NH  MT WASHINGTON                   6267  JUL 21  49.3    54   44
CAR ME  CARIBOU WFO                      624  JUL 22  66.0    76   56
MHT NH  MANCHESTER AP                    225  JUL 22  73.0    83   63
UUU RI  NEWPORT STATE AP                 172  JUL 22  72.0    80   64
BED MA  BEDFORD HANSCOM FLD              133  JUL 23  73.5    84   63
BOS MA  BOSTON                            12  JUL 23  73.9    82   66
CQX MA  CHATHAM MUNI AP                   68  JUL 23  71.7    79   64
MQE MA  BLUE HILL                        625  JUL 23  72.4    81   63
ORH MA  WORCESTER                       1000  JUL 23  70.7    79   62
GNR ME  GREENVILLE                      1029  JUL 23  66.5    76   58
IWI ME  WISCASSET AP                      68  JUL 23  67.8    78   57
CON NH  CONCORD ASOS                     346  JUL 23  70.4    83   58
EWB MA  NEW BEDFORD MUNI AP               80  JUL 24  71.4    81   62
BGR ME  BANGOR AP                        148  JUL 24  69.1    80   58
PVD RI  PROVIDENCE                        60  JUL 24  74.0    83   65
BDR CT  BRIDGEPORT SIKORSKY AP             5  JUL 25  74.9    83   67
NZW MA  SOUTH WEYMOUTH NAS               157  JUL 25  75.1    86   64
PSF MA  PITTSFIELD WB AP                      JUL 25  67.8    79   57
AUG ME  AUGUSTA FAA AP                   350  JUL 25  70.1    80   60
PWM ME  PORTLAND JETPORT                  45  JUL 25  69.6    79   60
LEB NH  LEBANON MUNI AP                  598  JUL 25  70.8    83   59
WST RI  WESTERLY STATE AP                 81  JUL 25  71.3    80   63
HVN CT  NEW HAVEN WB AP                    6  JUL 26  74.6    83   67
NHZ ME  BRUNSWICK                         70  JUL 26  69.7    80   59
BAF MA  WESTFIELD 2 NE AP                262  JUL 27  71.3    83   60
HYA MA  HYANNIS BARNSTABLE MUNI AP        55  JUL 27  72.3    81   64
GYX ME  GRAY                             378  JUL 27  69.8    80   60
ACK MA  NANTUCKET FAA AP                  43  JUL 28  69.6    76   63
CHH MA  CHATHAM                           40  JUL 28  69.6    76   63
BID RI  BLOCK ISLAND STATE AP            110  JUL 28  70.8    78   63
MVY MA  VINEYARD HAVEN AP                 68  JUL 29  70.2    80   61
GON CT  GROTON NEW LONDON AP              10  JUL 30  70.9    79   63
EPO ME  EASTPORT                          85  AUG  2  65.0    75   55

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CoastalWx

CoastalWx

Posted
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After this past winter I'm content with a SNE winter of discontent and enough snow in VT for good skiing.

cweat and I will have a field day on here if we saw a 99-00 winter :)

LOL, what a downer you are. It would be World War III on here, if that happened. I can see Messenger and Kevin now.

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snowman21

snowman21

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Darkness...blissful darkness...

Yep something to look forward to as we're blistering in 95 degree heat at the end of the week. I don't mind summer, for about the first month, but I wouldn't mind if we could go from the Fourth of July to Labor Day. That two month period is pretty boring weather-wise.

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snowNH

snowNH

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Posted

I actually look forward to darkness.. thats when hybernation mode sets it.. the changing of the seasons is a perfect timeframe.. as as I get sick of summer were going to the descent towards winter... vice versa.. it's really perfect

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CapturedNature

CapturedNature

Posted
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I always start a count down to July 23rd (around my climo peak) after the sun reaches it's peak in June...something to look forward to once we get past the heat of summer. What's interesting is that while the peak occurs on the 23rd, the rounded temperatures are the same from early in the month to later in the month. Bottom line is that we're reaching the summit guys!

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HoarfrostHubb

HoarfrostHubb

Posted
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Yep something to look forward to as we're blistering in 95 degree heat at the end of the week. I don't mind summer, for about the first month, but I wouldn't mind if we could go from the Fourth of July to Labor Day. That two month period is pretty boring weather-wise.

I love autumn and the rapid loss of daylight. I should move north

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tamarack

tamarack

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For many of us the climatological peak occurs this week, and thus begins the descent towards winter. Here are some peak dates across New England...

Are those figures based on 1981-2010?

I've massaged my data from Farmington, Maine for 1981-2010 and it's slightly odd compared to most "top of summer" curves I've seen, and offers more evidence that 30 yr is too short a period.

Using a 15-day smoothing, the mean temp climbs above 66.8 today (7/20) and remains there thru 8/4, a 16-day period with its peak at 69.07 on 7/29. With a 7-day smoothing the avg temp climbs to 67.15 on 7/20, slides to 66.63 a few days later, then goes back up to 67.34 on 8/2. Taking each day individually, the warmest is 8/5 at 68.58, and 8/4-5 are the only two days with the mean max above 80.

Using all the data back thru 1893 (with 15-day smooth), the curve is more "normal", with the avg climbings above 68.0 on 7/10 and remaining there thru 7/26, peaking at 68.65 on 7/19.

(Prior to the mid 1950s, recorded summer temps were 2-3F warmer than since then and 13 of Farmington's 14 triple-digit days are 1944 or earlier, 12 are 1911 or earlier. I'm convinced that the measurement location was different then, probably more in-town than where it's been during the past +/-55 yr.)

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snowman21

snowman21

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Are those figures based on 1981-2010?

I've massaged my data from Farmington, Maine for 1981-2010 and it's slightly odd compared to most "top of summer" curves I've seen, and offers more evidence that 30 yr is too short a period.

Using a 15-day smoothing, the mean temp climbs above 66.8 today (7/20) and remains there thru 8/4, a 16-day period with its peak at 69.07 on 7/29. With a 7-day smoothing the avg temp climbs to 67.15 on 7/20, slides to 66.63 a few days later, then goes back up to 67.34 on 8/2. Taking each day individually, the warmest is 8/5 at 68.58, and 8/4-5 are the only two days with the mean max above 80.

Using all the data back thru 1893 (with 15-day smooth), the curve is more "normal", with the avg climbings above 68.0 on 7/10 and remaining there thru 7/26, peaking at 68.65 on 7/19.

(Prior to the mid 1950s, recorded summer temps were 2-3F warmer than since then and 13 of Farmington's 14 triple-digit days are 1944 or earlier, 12 are 1911 or earlier. I'm convinced that the measurement location was different then, probably more in-town than where it's been during the past +/-55 yr.)

Guess I should have included a disclaimer, but the peak date is the midpoint of the highest daily mean temperature from the 1981-2010 normals. Most stations sit at their peak daily mean temperature for at least a few days, so the peak date as I have it is the mid-point of those days assuming the temperature curve is a nice sinusoid where the true peak average could only occur on one day of the year. I really made the thread for fun and not for any real scientific purpose since the dates themselves are somewhat arbitrary (due to rounding, method of normals computation, etc.) and prone to be +/- a week in either direction. The only noticeable pattern was that the coastal stations seem to reach their peak temp and hang on to it for much longer thus pushing their peak dates later into July/early August.

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powderfreak

powderfreak

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Only 5 months away from 4pm sunsets. :arrowhead:

There's one point in December when the sun sets on the ski resort around 11am... that's the time it disappears behind the mountain and then you're in the shadows all afternoon. That's the most depressing time of year for me even with all the snowfall... its hard to combat the feeling of only seeing the sun on the eastern side of the Spine in mid to late morning. Of course, the western slopes of the mountain gets to bask in the sunlight all afternoon.

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J.Spin

J.Spin

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Posted

For many of us the climatological peak occurs this week, and thus begins the descent towards winter. Here are some peak dates across New England...

                                                     --- HIGHEST --- 
ID  ST  NAME                            ELEV   PEAK   MEAN   MAX  MIN
--- --  ------------------------------- ----  ------  ----   ---  ---
MPV VT  MONTPELIER AP                   1126  JUL 17  67.4    79   56
BTV VT  BURLINGTON WSO AP                330  JUL 18  70.9    81   61
MVL VT  MORRISVILLE STOWE STATE AP       732  JUL 18  68.1    80   56

There's one point in December when the sun sets on the ski resort around 11am... that's the time it disappears behind the mountain and then you're in the shadows all afternoon. That's the most depressing time of year for me even with all the snowfall... its hard to combat the feeling of only seeing the sun on the eastern side of the Spine in mid to late morning. Of course, the western slopes of the mountain gets to bask in the sunlight all afternoon.

That’s pretty cool information about the climatological peaks; I had no idea that there was so much difference with latitude etc., nor did I know that we were already past our peak up here. I had mentally targeted July 21st, figuring our peak would be around there representing a one-month lag period past the solstice. Tuesday was actually the first day I noticed what seemed like a shortening of the day; I was driving toward the sun a bit after 6:00 A.M. and it seemed surprisingly low. Checking the sunrise table, it looks like it is now rising about 20 minutes later than a month ago, which is apparently enough that I noticed it.

PF – agreed about that potentially depressing December darkness, but big upsides are that the skiing can be so damn good at that time of year as long as Mother Nature has put down enough base; the powder can stay light and dry with so little sun to mess with it, and the whole December/holiday feel is great because everyone is so jazzed for snow. There are so many good things to keep the depression away. I’m definitely a fan of huge snows in November and December to set up the slopes during that period. It seemed like we had an unusually high concentration of stinker solstice/holiday periods for skiing in recent years, but last year sort of broke that trend. My weather records indicate that our snowfall at the house was basically average at that point of the ‘10-‘11 season, and although so much of it was fluff with the southern trend for synoptic storms starting up, somehow the skiing was really good. I see in my ski log that we had 7 outings during that Dec 23 – Jan 1 holiday stretch, so it must have been pretty good to get us out that much. Even by December 19th the powder skiing was already awesome, so depression had no chance. As good as things were, imagine how they would have gone off if we'd been hit by that Boxing Day storm!

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  • 11 months later...
OKpowdah

OKpowdah

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How long are you there?

Did you play golf at 2AM or anything?

Just one more week.

I can't NOT do something when it's light out, so I have gone for a lot of midnight runs. We also did a night hike during the solstice. Pretty amazing.

Got back from Denali last night a little after 2am. Around that time, the northeast sky is starting to brighten up.

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wxmanmitch

wxmanmitch

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Looks like PSF doesn't peak until 7/25 at 79° F for a daily max. Can't wait to begin the descent into fall.

I love the cool, crisp nights of fall and the turning of the leaves even if it does mean sacrificing daylight. I would imagine the leaves will drop early this after a rather dull fall foliage because of the dry conditions. Last year was too wet and many of the maples caught some blight and defoliated without ever turning color. This year the drought will likely be a detriment to our foliage by muting the colors some. Regardless, I still think it'll be better than last year since the fungus on the leaves caused the leaves to go from green to brown whereas even with drought conditions we should still see some color. Obviously if we can get some rain soon, it may help matters.

Hopefully, I'll pull of a 100"+ winter this year (as with others in elevated interior SNE). '93-'94, '95-'96, '02-'03, '10-'11 were all 100"+ years here. I think '00-'01 may have been but I'm not sure. If it wasn't, it was close. I'll have to go hunt down some records. Basically, it winds up about being 1 in 5 or 6 winters here.

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