Thursday, November 27, 2025

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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

THURSDAY, NOVEMBER 27, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0650E
SUNSET: 1614E

A WIND-WHIPPED THANKSGIVING TODAY: COLD FRONT BRINGS COOLER
TEMPS, GUSTY WINDS, AND A TRACE OF RAIN OVERNIGHT….

Blue Hill received a trace of precipitation late last night into
the early morning as a cold front passed through the area. Behind
the front has left us significantly colder temperatures and strong
westerly winds. The sky has been partly cloudy for much of the day,
with an increase in clouds in the afternoon.

Temperatures remained mild through last night until around 2am
this morning and continued to drop until just after 7am. Our low
for the day is 10 degrees below yesterday’s low and because the
air is significantly drier it feels every bit colder today. Dew
point values were in the upper 20’s but have dropped into the mid
20’s by the afternoon.

Wind has continued to be the star of the show this month. While
we had a strong southwesterly flow yesterday, the passage of the
cold front has shifted us into a more westerly and west-north westerly
flow. Winds were the strongest during the overnight, but we have
still experienced frequent gusts in the 25mph-30mph range throughout
the morning hours. The average speed for the day so far is around
15mph. The peak gust for the day so far is 43mph, which occurred
at 3:17am this morning.

Visibility has been in the 50-70 mile range for much of the day.

The maximum temperature so far today is 54F degrees, which is
8 degrees above the normal high of 46F. The minimum temperature
since midnight is 38F degrees, which is 8 degrees above the
normal low of 30F.

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Today’s Observations:

7 A.M.
Weather: Thinly scattered cirrus, few stratocumulus N-NE,
few stratocumulus distant ENE-SSW
Temperature: 38F; Dew Point: 29F; Relative Humidity: 70%
Wind: WNW @ 10G19 kts
Sea-level pressure: 1009.0 mb; 29.80 in. Hg: rising, then
more slowly
Visibility: 50 miles
6-hr Max temp: 52F
6-hr Min temp: 38F
24-hr Precip: Trace
24-hr Snowfall: 0.0 inches
BHO SA 1155 250 -SCT 50 090/38/29/2910G19/980/ FEW SC N-NE
FEW SC DSNT ENE-SSW/ 8/501 51020 70000 10052 20038

10 A.M.
Weather: Thinly scattered cirrus, few stratocumulus distant
E-SSW, few altocumulus all quadrants
Temperature: 42F; Dew Point: 23F; Relative Humidity: 47%
Wind: WNW @ 17G27 kts, peak wind WNW 32mph at 9:28 A.M.
Sea-level pressure: 1010.6 mb; 29.84 in. Hg: rising, then
more slowly
Visibility: 60 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 250 -SCT 60 106/42/23/2917G27/984/ FEW SC DSNT
E-SSW FEW AC ALQDS PK WND 2928/28/ 8/551 51016

1 P.M.
Weather: Broken altocumulus, broken cirrus, few stratocumulus
all quadrants
Temperature: 42F; Dew Point: 24F; Relative Humidity: 48%
Wind: WNW @ 12G23 kts
Sea-level pressure: 1009.5 mb; 29.81 in. Hg: falling, then more
slowly
Visibility: 70 miles
6-hr Max temp: 46F
6-hr Min temp: 38F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
BHO SA 1755 E90 BKN 250 BKN 70 095/42/24/2812G23/981/ FEW SC ALQDS
8/551 56011 10046 20038

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SUMMARY FOR WEDNESDAY, NOVEMBER 26, 2025

TEMPERATURE (DEGREES F)
MAX…….59 NORMAL…..46
MIN…….48 NORMAL…..31
MEAN……54 NORMAL…..38

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………+16
TOTAL DEPARTURE FOR THE MONTH………………………-15 [-0.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….11 DEPARTURE…….-16
TOTAL HEATING UNITS FOR THE MONTH……………597 DEPARTURE…….+14
TOTAL HEATING UNITS FOR THE SEASON………….1008 DEPARTURE…….-86
TOTAL HEATING UNITS LAST SEASON TO DATE………836 DEPARTURE……+172

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)………..33 S @ 03:22 A.M.
VECTOR #1 (1-Sec)……….33 S @ 03:33 A.M.
VECTOR #2 (1-Sec)……….33 SSE @ 03:20 A.M.
DAVIS #1……………….37 S @ 03:37 A.M.
DAVIS #2 ………………44 S @ 03:21 A.M.
RMY #1 (Instantaneous)…..35 S @ 03:22 A.M.
RMY #2 (Instantaneous)…..34 SSE @ 03:20 A.M.
MERLIN…………………M
RICHARDS (C5C) (Inst)……33 S @ 03:22 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………26 S @ 03:34 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..24 S @ 03:34 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..25 S @ 03:23 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………24 S @ 03:34 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………29 S @ 03:24 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..24 S @ 03:34 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..26 S @ 03:23 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………23 S @ 03:34 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..12.5 SW [301 total miles] VECTOR #1………………12.9
VECTOR #2………………13.4
DAVIS #1……………….12.3 SSW
DAVIS #2……………….13.3 SSW
RMY #1…………………12.7 SSW
RMY #2…………………13.5 SSW
RICHARDS (C5C)………….12.1

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE MONTH…………..1.99 DEPARTURE…..-1.70
TOTAL PRECIPITATION FOR THE YEAR (2025)…….44.30 DEPARTURE…..-3.55

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE…..-0.1
TOTAL SNOWFALL FOR THE MONTH………………..0.1 DEPARTURE…..-1.2
TOTAL SNOWFALL FOR THE SEASON (2025-2026)…….0.1 DEPARTURE…..-1.9

————————————————————–

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/0.0/071/12 32 NW VEC1 32 NW RMY 34
11/14 46/32/39/-3/0.00/0.0/495/84 30 NNW VEC1 30 NNW RMY 30
11/15 44/28/36/-6/0.37/0.1/522/89 26 SSE VEC1 26 SSE RMY 26
11/16 52/33/43/+1/0.19/T/280/48 50 NW VEC1 49 W RMY 53
11/17 41/29/35/-6/0.00/0.0/495/85 45 WNW VEC1 45 WNW RMY 46
11/18 46/30/38/-3/0.00/0.0/574/99 31 WNW VEC1 32 WNW RMY 33
11/19 44/27/36/-5/0.00/0.0/527/91 20 NNW VEC1 19 NW RMY 20
11/20 45/27/36/-4/0.00/0.0/300/52 16 NNW VEC1 16 NNW RMY 16
11/21 45/34/40/0/0.00/0.0/075/13 28 SW VEC1 28 SW RMY 26
11/22 45/31/38/-2/0.16/0.0/046/08 22 NNW VEC1 22 NNW RMY 23
11/23 39/28/34/-5/T/T/154/27 18 WNW VEC1 19 WNW RMY 19
11/24 49/33/41/+2/T/T/506/89 30 NW VEC1 31 NW RMY 30
11/25 49/35/42/+3/0.14/0.0/…/.. 32 S VEC1 32 S RMY 32
11/26 59/48/54/+16/0.08/0.0/…/.. 33 S VEC1 33 S RMY 35