Thursday, November 13, 2025

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

THURSDAY, NOVEMBER 13, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0633E
SUNSET:  1624E

MAINLY CLOUDY SKIES AND COOL, BUT DRY….

Skies have featured a lot of cloud cover today. Some breaks of
sun did occur this morning, but otherwise clouds have dominated.
While virga has been observed, mainly in the northern quadrants,
it has been dry with a bit of breeze. With temperatures still
below normal, there is a bit of a chill in the air. All in all,
a fairly typical fall day for southern New England.

Temperatures as mentioned are still below normal for day time
readings, as it has only reached the mid 40s through early this
afternoon. Dew point values have been hanging out in the mid
30s, so the air mass as a whole isn’t quite as dry and cold as
it was the prior two days.

Winds have been fairly steady out of a westerly direction on
average. The average speed for the day so far is around 10mph.
The peak gust for the day so far is 24mph, which occurred just
after 11:30am this morning.

Visibility started the day around 40-50 miles, but has improved
markedly to around 70 miles by mid morning and through early
this afternoon.

The maximum temperature so far today is 47F degrees, which is
4 degrees below the normal high of 51F. The minimum temperature
since midnight is 38F degrees, which is 3 degrees above the
normal low of 35F.

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Today’s Observations:

7 A.M.
Weather: Broken altocumulus, broken cirrus, few stratocumulus
distant NE-SE-SSW, virga distant NNW-NE
Temperature: 39F; Dew Point: 34F; Relative Humidity: 82%
Wind: W @ 7 kts
Sea-level pressure: 1007.8 mb; 29.76 in. Hg: falling, then rising
Visibility: 50 miles, hazy
6-hr Max temp: 40F
6-hr Min temp: 38F
24-hr Precip: Trace
BHO SA 1155 E100 BKN 250 BKN 50 078/39/34/2707/976/ FEW SC DSNT
NE-SE-SSW VIRGA DSNT NNW-NE HAZY TOTAL NEW SNW PST 24 HRS TRACE/
8/551 53008 70000 10040 20038

10 A.M.
Weather: Scattered stratocumulus, overcast altocumulus,
few breaks in overcast all quadrants, virga distant WNW-N-ENE
Temperature: 45F; Dew Point: 34F; Relative Humidity: 64%
Wind: WNW @ 10G19 kts
Sea-level pressure: 1008.4 mb; 29.78 in. Hg: rising, then steady
Visibility: 70 miles
3-hr Precip: 0.00 inches
BHO SA 1455 40 SCT E100 OVC 70 084/45/34/3010G19/978/
FEW BINOVC ALQDS VIRGA DSNT WNW-N-ENE/ 8/55/ 51006

1 P.M.
Weather: Broken stratocumulus, overcast altostratus, virga distant
SE-WSW and distant NW-N
Temperature: 46F Dew Point: 34F; Relative Humidity: 61%
Wind: W @ 10G18 kts
Sea-level pressure: 1007.4 mb; 29.75 in. Hg: falling, then more slowly
Visibility: 70 miles
6-hr Max temp: 47F
6-hr Min temp: 39F
6-hr Precip: 0.00 inches
BHO SA 1755 E35 BKN 100 OVC 70 074/46/34/2810G18/975/
VIRGA DSNT SE-WSW AND DSNT NW-N/ 8/52/ 56010 10047 20039

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SUMMARY FOR WEDNESDAY, NOVEMBER 12, 2025

TEMPERATURE (DEGREES F)
MAX…….44   NORMAL…..51
MIN…….30   NORMAL…..35
MEAN……37   NORMAL…..43

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-6
TOTAL DEPARTURE FOR THE MONTH………………………..0 [-0.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….28  DEPARTURE……..+6
TOTAL HEATING UNITS FOR THE MONTH……………239  DEPARTURE……..-2
TOTAL HEATING UNITS FOR THE SEASON…………..650  DEPARTURE……-102
TOTAL HEATING UNITS LAST SEASON TO DATE………538  DEPARTURE……+112

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)………..32 W    @   12:16 P.M.
VECTOR #1 (1-Sec)……….32 W    @   12:16 P.M.
VECTOR #2 (1-Sec)……….32 SW   @   10:30 A.M.
DAVIS #1……………….33 W    @   12:16 P.M.
DAVIS #2 ………………31 W    @   01:03 P.M.
RMY #1 (Instantaneous)…..33 W    @   12:16 P.M.
RMY #2 (Instantaneous)…..34 WSW  @   12:34 P.M.
MERLIN…………………31 W
RICHARDS (C5C) (Inst)……32 WSW  @   10:45 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………20 W    @   01:06 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..21 SW   @   10:30 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..22 WSW  @   11:13 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………22 W    @   01:07 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………23 WSW  @   11:13 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..21 SW   @   10:30 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..22 WSW  @   11:13 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………21 SW   @   10:30 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..11.0 WSW [264 total miles] VECTOR #1………………11.7
VECTOR #2………………12.2
DAVIS #1……………….11.9 WSW
DAVIS #2………………….M
RMY #1…………………11.5 WSW
RMY #2…………………12.1 WSW
RICHARDS (C5C)………….11.5

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.14
TOTAL PRECIPITATION FOR THE MONTH…………..1.05 DEPARTURE…..-0.70
TOTAL PRECIPITATION FOR THE YEAR (2025)…….43.36 DEPARTURE…..-2.55

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………TRACE DEPARTURE……0.0
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE…..-0.4
TOTAL SNOWFALL FOR THE SEASON (2025-2026)…..TRACE DEPARTURE…..-1.1

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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 The low since midnight is 38F, the daily normal low is 35F.

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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 13
HIGH 66 IN 1931, 1964
LOW 14 IN 1920
PRECIP 1.96 INCHES IN 1982
SNOWFALL 4.6 IN 2004
PEAK GUST 77 S IN 1982

RECORDS FOR NOVEMBER 14
HIGH 70 IN 1993
LOW 11 IN 1905
PRECIP 2.08 INCHES IN 2009
SNOWFALL 3.5 IN 1997, 2014
PEAK GUST 63 W IN 2003

TODAY’S REPORT PREPARED BY: Matt Douglas