Saturday, January 24, 2026
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, JANUARY 24, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0705E
SUNSET: 1648E
ARCTIC FRONT USHERS IN BITTER COLD AND GUSTY NW WINDS….
Plenty of sunshine today, with clear conditions this morning
transitioning to an increase in upper level clouds that have
settled in over the area. Even so, the sunshine has been out
all day, filtering through the cirrus level, though it is doing
absolutely nothing to warm us, as the arctic air has been
dominating the conditions today.
Temperatures have been well below normal today, as we have
hit our coldest temperature of the 2025-2026 winter. This
morning the mercury dipped to 0.3F and with the added wind
gusts, we had wind chills in the -20s! Because of the dry arctic
air, dew points have been in the negative teens throughout
the day. “Biting cold” doesn’t even begin to describe how it has
felt on the hill today. It has begun to “warm” up as temperatures
have struggled to make it to the double digits by noon time.
As if the temperatures weren’t cold enough, the wind has been
pretty steady and gusty throughout the day. Winds picked up
intensity yesterday evening out of the west-northwest and shifted
to a more northwesterly (and colder) flow during the early morning
hours. The average speed for the day so far is around 16mph, with
frequent gusts in the 20-25mph range during the earlier part of
the day. The peak gust for the day so far is 49mph which occurred
at 12:28am this morning.
Visibility was around 40 miles this morning, and improved to
around 60-70 miles during the later part of the morning and early
afternoon hours.
The maximum temperature so far today is 11F degrees, which is
23 degrees below the normal high of 34F. The minimum temperature
since midnight is 0F degrees, which is 17 degrees below the
normal low of 17F.
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Today’s Observations:
7 A.M.
Weather: Clear, few stratocumulus NE-E-S, few cirrus SE-SW
Temperature: 0F; Dew Point: -14F; Relative Humidity: 48%
Wind: NW @ 12G21 kts, peak wind 30mph NW at 06:29 A.M.
Sea-level pressure: 1032.5 mb; 30.49 in. Hg: rising unsteadily
Visibility: 40 miles
6-hr Max temp: 9F
6-hr Min temp: 0F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 3 inches
BHO SA 1155 CLR 40 325/0/-14/3112G21/049/ FEW SC NE-E-S FEW CI SE-SW
PK WND 3126/29/ 8/501 4/003 52022 10009 20000
10 A.M.
Weather: Broken cirrus, few stratocumulus NE-E
Temperature: 5F; Dew Point: -12F; Relative Humidity: 43%
Wind: NW @ 14G24 kts
Sea-level pressure: 1034.1 mb; 30.54 in. Hg: rising, then more slowly
Visibility: 70 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E250 BKN 70 341/5/-12/3114G24/054/ FEW SC NE-E/ 8/501 51016
1 P.M.
Weather: Broken cirrus, few stratocumulus ENE-ESE
Temperature: 11F; Dew Point: -13F; Relative Humidity: 32%
Wind: NW @ 11G19 kts
Sea-level pressure: 1033.7 mb; 30.53 in. Hg: rising, then falling
Visibility: 60 miles
6-hr Max temp: 11F
6-hr Min temp: 0F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 3 inches
BHO SA 1755 E250 BKN 60 337/11/-13/3211G19/053/ FEW SC ENE-ESE/
8/501 4/003 58004 10011 20000
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SUMMARY FOR FRIDAY, JANUARY 23, 2026
TEMPERATURE (DEGREES F)
MAX…….32 NORMAL…..34
MIN…….10 NORMAL…..17
MEAN……21 NORMAL…..26
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-5
TOTAL DEPARTURE FOR THE MONTH………………………+63 [+2.5 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….44 DEPARTURE……..+5
TOTAL HEATING UNITS FOR THE MONTH……………815 DEPARTURE…….-65
TOTAL HEATING UNITS FOR THE SEASON………….3055 DEPARTURE…….-35
TOTAL HEATING UNITS LAST SEASON TO DATE……..2841 DEPARTURE……+214
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)………..46 WNW @ 08:29 P.M.
VECTOR #1 (1-Sec)……….46 WNW @ 08:29 P.M.
VECTOR #2 (1-Sec)……….50 WNW @ 08:36 P.M.
DAVIS #1……………….45 NW @ 08:26 P.M.
DAVIS #2 ………………45 NW @ 08:36 P.M.
RMY #1 (Instantaneous)…..47 WNW @ 08:29 P.M.
RMY #2 (Instantaneous)…..51 WNW @ 08:36 P.M.
MERLIN…………………47 WNW
RICHARDS (C5C) (Inst)……47 WNW @ 08:37 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………33 WNW @ 08:37 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..30 WNW @ 08:30 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..36 WNW @ 08:37 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………32 WNW @ 08:30 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………36 WNW @ 08:37 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..29 WNW @ 08:30 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..35 WNW @ 08:37 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………30 WNW @ 08:30 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..14.3 WNW [342 total miles]
VECTOR #1………………13.7
VECTOR #2………………14.8
DAVIS #1……………….14.4 WNW
DAVIS #2……………….14.6 WNW
RMY #1…………………13.3 WNW
RMY #2…………………14.3 W
RICHARDS (C5C)………….13.9
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.14
TOTAL PRECIPITATION FOR THE MONTH (JAN)……..1.56 DEPARTURE…..-1.83
TOTAL PRECIPITATION FOR THE YEAR (2026)……..1.56 DEPARTURE…..-1.83
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE…..-0.6
TOTAL SNOWFALL FOR THE MONTH (JAN)………….10.3 DEPARTURE…..-3.0
TOTAL SNOWFALL FOR THE SEASON (2025-2026)……17.2 DEPARTURE….-11.2
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PRELIMINARY CLIMATE SUMMARY FOR JANUARY 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
1/1 29/11/20/-9/0.15/2.7/264/48 43 NW VEC1 43 NW RMY 42
1/2 25/12/19/-9/0.00/0.0/397/72 26 W VEC1 26 W RMY 27
1/3 30/14/22/-6/0.00/0.0/342/62 31 WNW VEC1 31 WNW RMY 31
1/4 30/21/26/-2/0.03/0.4/171/31 26 NNW VEC1 27 NNW RMY 28
1/5 25/11/18/-10/0.04/0.2/249/45 23 SSE VEC1 22 NW RMY 23
1/6 32/22/27/-1/0.01/T/000/00 22 ENE VEC1 21 E RMY 23
1/7 36/30/33/+6/0.25/0.1/000/00 23 NW VEC1 21 ENE RMY 24
1/8 45/30/38/+11/0.00/0.0/500/90 26 NW VEC1 27 WNW RMY 27
1/9 50/32/41/+14/0.06/0.0/228/41 41 SW VEC1 42 SSW RMY 44
1/10 50/36/43/+16/0.36/T/022/04 33 W VEC1 31 W RMY 31
1/11 41/30/36/+9/0.06/0.0/079/14 43 WNW VEC1 41 WNW RMY 43
1/12 37/24/31/+4/0.00/0.0/303/54 47 WNW VEC1 46 WNW RMY 47
1/13 45/28/37/+11/0.00/0.0/457/81 35 SSW VEC1 35 SSW RMY 33
1/14 49/39/44/+18/T/0.0/017/03 36 SSW VEC1 36 SSW RMY 36
1/15 51/25/38/+12/T/0.0/340/60 39 SW VEC1 39 SW RMY 38
1/16 30/15/23/-3/0.00/0.0/483/85 46 W VEC1 46 W RMY 46
1/17 38/24/31/+5/0.02/T/040/07 39 SSW VEC1 39 SSW RMY 40
1/18 33/28/31/+5/0.44/4.4/000/00 22 S VEC1 22 S RMY 21
1/19 34/22/28/+2/0.11/2.2/132/23 35 WSW VEC1 33 WSW RMY 38
1/20 24/11/18/-8/0.00/0.0/564/98 33 W VEC1 33 W RMY 34
1/21 33/7/20/-6/0.01/0.1/387/67 33 SSW VEC1 34 SSW RMY 36
1/22 43/27/35/+9/0.02/0.2/…/.. 38 W VEC1 38 W RMY 42
1/23 32/10/21/-5/0.00/0.0/…/.. 46 WNW VEC1 46 WNW RMY 47
1/24 The low since midnight is 0F, the daily normal low is 17F.
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JANUARY 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 JANUARY 24
HIGH 60F IN 1967
LOW -12F IN 1907
PRECIP 2.40 INS. IN 1935
SNOWFALL 11.3 INS. IN 1935
PEAK GUST 82 MPH S IN 1996
RECORDS FOR JANUARY 25
HIGH 56F IN 2010
LOW -9F IN 1935
PRECIP 2.24 INS. IN 1979
SNOWFALL 12.5 INS. IN 1941
PEAK GUST 81 MPH WNW IN 1972
TODAY’S REPORT PREPARED BY: Amanda Joly
