Saturday, November 15, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, NOVEMBER 15, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0635E
SUNSET: 1622E
COOL, CLEAR START GIVES WAY TO INCREASING PM CLOUDS ….
Today started with plenty of sunshine and below freezing
temperatures. Winds have been lighter, which has been ideal
given the cooler than normal temperatures. By the early
afternoon, there was an increase in cirrus clouds, however,
sunshine has still been pretty prominent overall.
Temperatures dipped into the upper 20’s early this morning before
recovering into the mid 40’s. This is still below normal for
this time of year. Dew points have stayed in the upper 20’s as
well throughout the day, making for a great visibility day with
plenty of cold, dry air.
The wind has been on the lighter side today, with a general
northwest flow that has turned more west in the afternoon. Winds
have averaged just under 9mph. The peak gust for the day so far
is 22mph, which occurred at 9:19am this morning.
Visibility has continued to improve as the day progressed. We
started with about 50 miles and finished at around 70 miles
of views.
The maximum temperature so far today is 44F degrees, which is
6 degrees below the normal high of 50F. The minimum temperature
since midnight is 28F degrees, which is 6 degrees below the
normal low of 34F.
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Today’s Observations:
7 A.M.
Weather: Clear, few stratocumulus distant WSW-N and distant
NE-SE-SSW, few cirrus distant SSW-WNW
Temperature: 28F; Dew Point: 28F; Relative Humidity: 99%
Wind: WNW @ 7 kts
Sea-level pressure: 1010.9 mb; 29.85 in. Hg: falling unsteadily
Visibility: 50 miles
6-hr Max temp: 32F
6-hr Min temp: 28F
24-hr Precip: 0.00 inches
BHO SA 1155 CLR 50 109/28/28/2907/985/ FEW SC DSNT WSW-N AND
DSNT NE-SE-SSW FEW CI DSNT SSW-WNW/ 8/501 57008 10032 20028
10 A.M.
Weather: Clear, few stratocumulus all quadrants, few cirrus
distant SSW-WNW
Temperature: 38F; Dew Point: 26F; Relative Humidity: 60%
Wind: NNW @ 8 kts
Sea-level pressure: 1009.4 mb; 29.81 in. Hg: falling, then
more rapidly
Visibility: 60 miles
3-hr Precip: 0.00 inches
BHO SA 1455 CLR 60 094/38/26/3308/981/ FEW SC ALQDS FEW CI
DSNT SSW-WNW/ 8/501 58015
1 P.M.
Weather: Scattered cirrus, few stratocumulus distant ESE-SSW
Temperature: 43F Dew Point: 28F; Relative Humidity: 56%
Wind: W @ 6 kts
Sea-level pressure: 1005.8 mb; 29.70 in. Hg: falling, then
more rapidly
Visibility: 70 miles
6-hr Max temp: 44F
6-hr Min temp: 28F
6-hr Precip: 0.00 inches
BHO SA 1755 250 SCT 70 058/43/28/2706/970/ FEW SC DSNT ESE-SSW
WND LGT/ 8/501 58036 10044 20028
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SUMMARY FOR FRIDAY, NOVEMBER 14, 2025
TEMPERATURE (DEGREES F)
MAX…….46 NORMAL…..51
MIN…….32 NORMAL…..34
MEAN……39 NORMAL…..42
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-3
TOTAL DEPARTURE FOR THE MONTH……………………….-6 [-0.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….26 DEPARTURE……..+3
TOTAL HEATING UNITS FOR THE MONTH……………290 DEPARTURE……..+4
TOTAL HEATING UNITS FOR THE SEASON…………..701 DEPARTURE…….-96
TOTAL HEATING UNITS LAST SEASON TO DATE………597 DEPARTURE……+104
COOLING DEGREE DAYS (SEASON JAN 2025 THRU DEC 2025)
TOTAL COOLING UNITS FOR YESTERDAY……………..0 DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH……………..0 DEPARTURE………0
TOTAL COOLING UNITS FOR THE SEASON…………..756 DEPARTURE…….+79
TOTAL COOLING UNITS LAST SEASON TO DATE………768 DEPARTURE…….-12
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all on Main Tower.
E=Estimated *=Last of multiple occurrences
F420C (Official)………..30 NNW @ 09:49 A.M.
VECTOR #1 (1-Sec)……….30 NNW @ 09:49 A.M.
VECTOR #2 (1-Sec)……….30 NNW @ 09:49 A.M.
DAVIS #1……………….30 NNW @ 09:50 A.M.
DAVIS #2 ………………27 N @ 09:50 A.M.
RMY #1 (Instantaneous)…..30 NNW @ 09:49 A.M.
RMY #2 (Instantaneous)…..33 NNW @ 09:49 A.M.
MERLIN…………………27 NNW
RICHARDS (C5C) (Inst)……29 NNW @ 09:49 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………19 NNW @ 09:51 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..19 NNW @ 09:51 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..20 NNW @ 09:51 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 NNW @ 09:51 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………20 N @ 09:51 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..19 NNW @ 09:51 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 NNW @ 09:51 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………19 NNW @ 09:51 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………9.6 NW [230 total miles]
VECTOR #1………………10.3
VECTOR #2………………11.3
DAVIS #1……………….10.6 NW
DAVIS #2………………….M
RMY #1…………………10.0 NW
RMY #2…………………10.9 NW
RICHARDS (C5C)………….10.7
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..1.05 DEPARTURE…..-0.98
TOTAL PRECIPITATION FOR THE YEAR (2025)…….43.36 DEPARTURE…..-2.83
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……0.0
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE…..-0.5
TOTAL SNOWFALL FOR THE SEASON (2025-2026)…..TRACE DEPARTURE…..-1.2
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PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST
PEAK GUST: F420C (Official)
VEC1: Vector #1 1-second gust
RMY: R.M. Young #1 wind gust recording system (Instantaneous)
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M: Missing data
11/1 56/38/47/+0/0.00/0.0/619/100 50 W VEC1 50 W RMY 50
11/2 53/33/43/-4/0.00/0.0/617/100 23 WNW VEC1 23 WNW RMY 24
11/3 54/42/48/+2/0.16/0.0/012/02 41 WNW VEC1 41 W RMY 46
11/4 54/42/48/+2/0.00/0.0/605/99 52 NW VEC1 52 NW RMY 54
11/5 56/39/48/+2/0.06/0.0/091/15 50 W VEC1 47 W RMY 52
11/6 50/34/42/-3/0.02/T/449/74 48 WNW VEC1 48 WNW RMY 49
11/7 52/31/42/-3/0.04/0.0/448/74 43 SSW VEC1 42 SSW RMY 47
11/8 60/45/53/+8/0.18/0.0/307/51 32 WNW VEC1 33 WNW RMY 33
11/9 61/46/54/+10/0.15/0.0/216/36 33 ESE VEC1 34 ESE RMY 35
11/10 54/36/45/+1/0.44/0.0/000/00 32 W VEC1 31 W RMY 31
11/11 37/30/34/-9/T/T/131/22 46 WNW VEC1 44 WNW RMY 47
11/12 44/30/37/-6/T/T/148/25 32 W VEC1 32 W RMY 33
11/13 47/32/40/-3/T/0.0/…/.. 32 NW VEC1 32 NW RMY 34
11/14 46/32/39/-3/0.00/0.0/…/.. 30 NNW VEC1 30 NNW RMY 30
11/15 The low since midnight is 28F, the daily normal low is 34F.
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NOVEMBER DAILY RECORDS TO DATE
NONE.
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR NOVEMBER 15
HIGH 74 IN 1993
LOW 15 IN 1933
PRECIP 1.66 INCHES IN 1981
SNOWFALL 6.5 IN 2018
PEAK GUST 65 SSE IN 2008
RECORDS FOR NOVEMBER 16
HIGH 73 IN 1927
LOW 8 IN 1933
PRECIP 2.25 INCHES IN 1981
SNOWFALL 2.0 IN 1913
PEAK GUST 78 S IN 1989
TODAY’S REPORT PREPARED BY: Amanda Joly
