Friday, January 23, 2026
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, JANUARY 23, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0706E
SUNSET: 1647E
INCREASING AFTERNOON CLOUDS AS ARCTIC FRONT PUSHES THROUGH….
This morning has featured plenty of sunshine with scattered
higher level clouds. There has been plenty of sunshine and a
lighter southwesterly flow. By the late morning and early
afternoon hours, increasing clouds have been observed, which is
indicative of the arctic front approaching. Winds have also
increased and have turned more westerly.
Temperatures have swung in the other direction from yesterday’s
mild spell, and we have yet to reach the average temperature for
this time of year. Temperatures dipped down to 21F just before
sunrise and despite the mostly sunny conditions, we have only
managed to make it to the lower 30s. Dry arctic air has begun to
settle over the area, as dew points were in the single digits and
low teens throughout the day.
The wind was averaging around 10mph for much of the morning
but has increased to around 15mph in the past couple of hours.
Wind has been mostly out of the west-southwest. The average
speed for the day so far is around 12mph. The peak gust for the
day so far is 31mph which occurred just before 11am this morning.
Visibility has been somewhat limited to around 35-40 miles
due to haziness most of the day.
The maximum temperature so far today is 32F degrees, which is
2 degrees below the normal high of 34F. The minimum temperature
since midnight is 21F degrees, which is 4 degrees above the
normal low of 17F.
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Today’s Observations:
7 A.M.
Weather: Scattered cirrus, few stratocumulus distant NE-E
Temperature: 22F; Dew Point: 8F; Relative Humidity: 56%
Wind: W @ 10 kts
Sea-level pressure: 1019.0 mb; 30.09 in. Hg: rising, then more rapidly
Visibility: 35 miles, hazy
6-hr Max temp: 27F
6-hr Min temp: 21F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 2 inches
BHO SA 1155 220 SCT 35 190/22/8/2810/009/ FEW SC DSNT NE-E HAZY/
8/501 4/002 53012 10027 20021
10 A.M.
Weather: Scattered cirrus
Temperature: 37F; Dew Point: 11F; Relative Humidity: 50%
Wind: WSW @ 9 kts
Sea-level pressure: 1019.1 mb; 30.09 in. Hg: rising, then falling
Visibility: 40 miles, hazy
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 250 SCT 40 191/37/11/2509/009/ 8/001 50001
1 P.M.
Weather: Scattered stratocumulus, scattered cirrostratus, broken cirrus
Temperature: 31F; Dew Point: 12F; Relative Humidity: 44%
Wind: W @ 13G24 kts
Sea-level pressure: 1016.6 mb; 30.02 in. Hg: falling, then more slowly
Visibility: 40 miles, hazy
6-hr Max temp: 32F
6-hr Min temp: 22F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 2 inches
BHO SA 1755 55 SCT 220 SCT E250 BKN 40 166/31/12/2713G24/002/ HAZY/
8/506 4/002 56025 10032 20022
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SUMMARY FOR THURSDAY, JANUARY 22, 2026
TEMPERATURE (DEGREES F)
MAX…….43 NORMAL…..34
MIN…….27 NORMAL…..17
MEAN……35 NORMAL…..26
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+9
TOTAL DEPARTURE FOR THE MONTH………………………+68 [+3.1 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….30 DEPARTURE……..-9
TOTAL HEATING UNITS FOR THE MONTH……………771 DEPARTURE…….-69
TOTAL HEATING UNITS FOR THE SEASON………….3011 DEPARTURE…….-39
TOTAL HEATING UNITS LAST SEASON TO DATE……..2797 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)………..38 W @ 01:56 P.M.
VECTOR #1 (1-Sec)……….38 W @ 01:56 P.M.
VECTOR #2 (1-Sec)……….39 WSW @ 02:05 P.M.
DAVIS #1……………….37 WSW @ 01:57 P.M.
DAVIS #2 ………………39 W @ 01:57 P.M.
RMY #1 (Instantaneous)…..42 WSW @ 02:05 P.M.
RMY #2 (Instantaneous)…..40 W @ 01:56 P.M.
MERLIN…………………38 W
RICHARDS (C5C) (Inst)……38 W @ 12:13 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………25 SW @ 01:44 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..25 SW @ 01:44 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..26 SW @ 01:43 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………26 SW @ 01:44 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………27 SW @ 01:44 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..25 SW @ 01:44 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..26 SW @ 01:43 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………24 WSW @ 02:07 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..14.7 W [353 total miles]
VECTOR #1………………14.4
VECTOR #2………………14.9
DAVIS #1……………….14.7 WSW
DAVIS #2……………….14.9 WSW
RMY #1…………………14.0 WSW
RMY #2…………………14.7 WSW
RICHARDS (C5C)………….13.8
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…..-1.69
TOTAL PRECIPITATION FOR THE YEAR (2026)……..1.56 DEPARTURE…..-1.69
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…..-2.4
TOTAL SNOWFALL FOR THE SEASON (2025-2026)……17.2 DEPARTURE….-10.6
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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 The low since midnight is 21F, 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 23
HIGH 62F IN 1906
LOW -10F IN 1976
PRECIP 1.69 INS. IN 1966
SNOWFALL 14.6 INS. IN 1966
PEAK GUST 85 MPH S IN 1992
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
TODAY’S REPORT PREPARED BY: Amanda Joly
