Sunday, November 16, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, NOVEMBER 16, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0637E
SUNSET: 1621E
FIRST MEASURABLE FROZEN PRECIP LAST EVENING FROM SLEET, MILD BUT
BLUSTERY TODAY….
We had our first measurable frozen precipitation of the season
last evening as sleet was mixed with the rain for the first
hour and a half after the onset of the precipitation. 0.1″ of
sleet was able to accumulate before changing to all rain just
after 9pm. Rain continued into the very early morning hours
of this morning with a total of 0.56″ of water measured in the
gauge.
Once the rain ended just after 4am this morning, clouds quickly
broke allowing for some sunshine this morning. However, as day-
time heating takes place along with increasing cold air advection,
clouds have once again filled the sky by late this morning and
into early this afternoon. Some showers have also developed from
all the instability.
Temperatures warmed into the low 50s by late this morning, but
are starting to fall off a bit early this afternoon thanks to
the cold air advection. Dew points values that held in the mid
40s all morning, are not dropping into the low 30s early this
afternoon.
The wind has also picked up quite a bit thanks to the above
mentioned cold air advection. A westerly wind has increased
from around 10mph this morning to 20-30mph by early this
afternoon. Gusts have increased in frequency and intensity as
we pushed into the late morning hours. Values have been regularly
exceeding 40mph. The peak gust for the day so far is 48mph, which
occurred after 12:30pm.
Visibility has continued to improve as the day progressed. We
started with about 25 miles and finished at around 70 miles by
early this afternoon.
The maximum temperature so far today is 52F degrees, which is
2 degrees above the normal high of 50F. The minimum temperature
since midnight is 37F degrees, which is 3 degrees above the
normal low of 34F.
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Today’s Observations:
7 A.M.
Weather: Broken altocumulus/altostratus, overcast cirrostratus,
few breaks in overcast all quadrants
Temperature: 45F; Dew Point: 45F; Relative Humidity: 99%
Wind: W @ 14G21 kts
Sea-level pressure: 986.1 mb; 29.12 in. Hg: falling, then rising
Visibility: 25 miles, thin fog
6-hr Max temp: 46F
6-hr Min temp: 39F
24-hr Precip: 0.56 inches
24-hr Snowfall: 0.1 inches
BHO SA 1155 E120 BKN 220 OVC 25 861/45/45/2714G21/912/
FEW BINOVC ALQDS THN F ALQDS TOTAL NEW SNW PAST 24 HRS 0.1 INS/
8/077 53007 6014/ 70056 10046 20039
10 A.M.
Weather: Scattered stratocumulus, scattered altocumulus,
scattered cirrostratus, scattered cirrus, virga distant SW-NNW
Temperature: 51F; Dew Point: 45F; Relative Humidity: 80%
Wind: W @ 14G25 kts, peak wind W 31mph at 9:27 A.M.
Sea-level pressure: 985.4 mb; 29.10 in. Hg: falling, then more slowly
Visibility: 50 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 25 SCT 120 SCT 220 SCT 250 SCT 50 854/51/45/2814G25/910/
VIRGA DSNT SW-NNW PK WND 2727/27/ 8/558 56007
1 P.M.
Weather: Broken stratocumulus, broken altocumulus, virga distant
NW-ENE and distant ESE-SE and distant SSW-WSW
Temperature: 48F Dew Point: 32F; Relative Humidity: 52%
Wind: WNW @ 26G40 kts, peak wind WNW 48mph at 12:38 P.M.
Sea-level pressure: 985.7 mb; 29.11 in. Hg: rising, then steady
Visibility: 70 miles
6-hr Max temp: 52F
6-hr Min temp: 45F
6-hr Precip: Trace
6-hr Snowfall: 0.0 inches
BHO SA 1755 E45 BKN 100 BKN 70 857/48/32/2926G40/911/ VIRGA DSNT
NW-ENE AND DSNT ESE-SE AND DSNT SSW-WSW PK WND 2942/38/ 8/560
51003 6000/ 10052 20045
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SUMMARY FOR SATURDAY, NOVEMBER 15, 2025
TEMPERATURE (DEGREES F)
MAX…….44 NORMAL…..50
MIN…….28 NORMAL…..34
MEAN……36 NORMAL…..42
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-6
TOTAL DEPARTURE FOR THE MONTH………………………-12 [-1.0 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….29 DEPARTURE……..+6
TOTAL HEATING UNITS FOR THE MONTH……………319 DEPARTURE…….+11
TOTAL HEATING UNITS FOR THE SEASON…………..730 DEPARTURE…….-90
TOTAL HEATING UNITS LAST SEASON TO DATE………619 DEPARTURE……+111
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)………..26 SSE @ 11:59 P.M.
VECTOR #1 (1-Sec)……….26 SSE @ 11:59 P.M.
VECTOR #2 (1-Sec)……….26 SSE @ 11:59 P.M.
DAVIS #1……………….25 S @ 10:26 P.M.
DAVIS #2 ………………31 S @ 11:59 P.M.
RMY #1 (Instantaneous)…..26 SSE @ 11:42 P.M.
RMY #2 (Instantaneous)…..27 SSE @ 11:59 P.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)……25 SSE @ 11:42 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………18 SSE @ 11:43 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..19 SSE @ 11:59 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..20 SSE @ 11:59 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………18 S @ 10:33 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………22 S @ 10:10 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..18 SSE @ 11:43 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 SSE @ 11:59 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………18 SSE @ 11:43 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………8.8 NW [212 total miles]
VECTOR #1……………….9.5
VECTOR #2………………10.1
DAVIS #1………………..9.5 W
DAVIS #2………………….M
RMY #1………………….9.3 W
RMY #2…………………10.0 W
RICHARDS (C5C)…………..9.7
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.56 DEPARTURE…..+0.42
TOTAL PRECIPITATION FOR THE MONTH…………..1.61 DEPARTURE…..-0.56
TOTAL PRECIPITATION FOR THE YEAR (2025)…….43.92 DEPARTURE…..-2.41
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.1 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 The low since midnight is 37F, 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 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
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
TODAY’S REPORT PREPARED BY: Matt Douglas
