Monday, November 17, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, NOVEMBER 17, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0638E
SUNSET: 1620E
A MIX OF SUN AND CLOUDS WITH WINDY AND COLD CONDITIONS TODAY….
Today has featured a mix of sun and clouds with a blustery
wind and below normal temperatures. It’s definitely not an
ideal day to be outdoors without proper winter gear.
Temperatures started the day in the upper 20s and have only
recovered to the upper 30s to near 40F by early this afternoon.
This is more than 10 degrees below the expected high for the
date. Dew point values have been holding in the upper teens
and lower 20s today, indicative of a polar air mass over the
region.
The wind continues to be busy today with west-northwesterly
winds frequently gusting over 30mph. The average speed for
the day so far is around 20mph. The peak gust so far today
is 45mph, which occurred just before 9am this morning.
Visibility has been decent today, starting at around 50 miles
early this morning, then increasing to around 70 miles by
late this morning.
The maximum temperature so far today is 40F degrees, which is
10 degrees below the normal high of 50F. The minimum temperature
since midnight is 29F degrees, which is 4 degrees below the
normal low of 33F.
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Today’s Observations:
7 A.M.
Weather: Scattered altocumulus lenticularis, thin broken cirrus,
few stratocumulus distant all quadrants
Temperature: 30F; Dew Point: 19F; Relative Humidity: 64%
Wind: W @ 14G21 kts
Sea-level pressure: 997.4 mb; 29.45 in. Hg: rising, then more rapidly
Visibility: 50 miles
6-hr Max temp: 33F
6-hr Min temp: 29F
24-hr Precip: Trace
24-hr Snowfall: Trace
BHO SA 1155 120 SCT 250 -BKN 50 974/30/19/2814G21/945/ FEW SC DSNT
ALQDS VIRGA ALQDS TOTAL NEW SNW PST 24 HRS TRACE/ 8/541 53020
70000 10033 20029
10 A.M.
Weather: Broken stratocumulus, broken altocumulus, broken cirrus
Temperature: 35F; Dew Point: 21F; Relative Humidity: 56%
Wind: WNW @ 22G35 kts, peak wind WNW 44mph at 9:35 A.M.
Sea-level pressure: 999.9 mb; 29.53 in. Hg: rising, then more rapidly
Visibility: 70 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E40 BKN 100 BKN 250 BKN 70 999/35/21/3022G35/953/
PK WND 2938/35/ 8/551 53025
1 P.M.
Weather: Broken stratocumulus
Temperature: 40F Dew Point: 21F; Relative Humidity: 46%
Wind: WNW @ 17G37 kts, peak wind WNW 43mph at 12:53 P.M.
Sea-level pressure: 1000.7 mb; 29.55 in. Hg: rising unsteadily
Visibility: 70 miles
6-hr Max temp: 40F
6-hr Min temp: 30F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
BHO SA 1755 E50 BKN 70 007/40/21/3017G37/955/ PK WND 2937/53/
8/500 52008 10040 20030
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SUMMARY FOR SUNDAY, NOVEMBER 16, 2025
TEMPERATURE (DEGREES F)
MAX…….52 NORMAL…..50
MIN…….33 NORMAL…..34
MEAN……43 NORMAL…..42
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+1
TOTAL DEPARTURE FOR THE MONTH………………………-11 [-0.9 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….22 DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH……………341 DEPARTURE……..+9
TOTAL HEATING UNITS FOR THE SEASON…………..752 DEPARTURE…….-91
TOTAL HEATING UNITS LAST SEASON TO DATE………635 DEPARTURE……+117
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)………..50 NW @ 09:43 P.M.
VECTOR #1 (1-Sec)……….49 W @ 12:38 P.M.
VECTOR #2 (1-Sec)……….49 W @ 12:11 P.M.
DAVIS #1……………….48 W @ 01:05 P.M.
DAVIS #2 ………………45 W @ 11:57 A.M.
RMY #1 (Instantaneous)…..53 NW @ 09:43 P.M.
RMY #2 (Instantaneous)…..52 WNW @ 11:57 A.M.
MERLIN…………………46 W
RICHARDS (C5C) (Inst)……52 NW @ 09:43 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………36 WNW @ 01:06 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..33 WNW @ 11:57 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..36 W @ 12:13 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………36 W @ 11:57 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………36 WNW @ 11:57 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..31 WNW @ 11:57 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..35 WNW @ 11:57 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………33 WNW @ 11:57 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..18.2 WNW [436 total miles]
VECTOR #1………………17.6
VECTOR #2………………18.8
DAVIS #1……………….18.3 W
DAVIS #2………………….M
RMY #1…………………16.7 W
RMY #2…………………18.3 W
RICHARDS (C5C)………….17.4
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..1.61 DEPARTURE…..-0.69
TOTAL PRECIPITATION FOR THE YEAR (2025)…….43.92 DEPARTURE…..-2.54
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………TRACE DEPARTURE……0.0
TOTAL SNOWFALL FOR THE MONTH………………..0.1 DEPARTURE…..-0.5
TOTAL SNOWFALL FOR THE SEASON (2025-2026)…….0.1 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 44/28/36/-6/0.37/0.1/…/.. 26 SSE VEC1 26 SSE RMY 26
11/16 52/33/43/+1/0.19/T/…/.. 50 NW VEC1 49 W RMY 53
11/17 The low since midnight is 29F, the daily normal low is 33F.
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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 17
HIGH 74 IN 1928
LOW 10 IN 1924
PRECIP 1.92 INCHES IN 1920
SNOWFALL 1.0 INS IN 1980
PEAK GUST 61 SSE IN 2006
RECORDS FOR NOVEMBER 18
HIGH 72 IN 1963
LOW 10 IN 1936
PRECIP 1.80 INS IN 1929
SNOWFALL 6.3 INS IN 1980
PEAK GUST 60 SW IN 1987
TODAY’S REPORT PREPARED BY: Matt Douglas
