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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
MONDAY, JANUARY 19, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0709E
SUNSET: 1642E
BIGGEST WINTER STORM OF THE SEASON SO FAR COMES TO AN END…
The storm system responsible for bringing the biggest snowfall
of the season so far is finally exiting the region. Snow, which
began yesterday morning, came to an end late this morning. The
storm total snowfall was 6.6″ here on the Hill, which melted
down to 0.55″ of liquid equivalent.
The sky is brightening with some splashes of sun poking through
the clouds at times early this afternoon. It’s certainly making
for a picturesque view with the snow covered landscape and
plastered trees.
Temperatures have gradually risen into the low 30s by early this
afternoon, after starting the day in the mid to upper 20s.
Winds were rather light and variable for a time during the mid to
late morning period. However it has settled to a southwesterly
flow and has been increasing over the last hour. The average
speed for the day so far is around 8mph. The peak gust for the
day so far occurred just after 1pm this afternoon, with a speed
of 23mph.
Visibility was quite restricted this morning due to the snow and
fog, with the view generally under 2 miles. However we have seen
marked improvement early this afternoon with the view increasing
to around 30 miles.
The maximum temperature so far today is 34F degrees, which is
equal to the normal high of 34F. The minimum temperature since
midnight is 27F degrees, which is 9 degrees above the normal low
of 18F.
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Today’s Observations:
7 A.M.
Weather: Sky obscured, vertical visibility 200ft, light snow
Temperature: 27F; Dew Point: 27F; Relative Humidity: 98%
Wind: NW @ 7 kts
Sea-level pressure: 1010.0 mb; 29.83 in. Hg: falling, then rising
Visibility: 1.5 miles, fog
6-hr Max temp: 29F
6-hr Min temp: 27F
24-hr Precip: 0.53 inches
24-hr Snowfall: 6.1 inches
Snow Depth: 6 inches
BHO SA 1155 X W2 11/2S-F 100/27/27/3207/983/ VRY LGT RIME ICING
TOTAL NEW SNW PST 24 HRS 6.1 INS/ 8//// 4/006 53014 6007/ 70053
10029 20027
10 A.M.
Weather: Sky obscured, vertical visibility 200ft, very light snow
Temperature: 29F; Dew Point: 28F; Relative Humidity: 98%
Wind: W @ 4 kts, wind light
Sea-level pressure: 1011.4 mb; 29.87 in. Hg: rising, then more rapidly
Visibility: 2 miles, fog
3-hr Precip: 0.02 inches
3-hr Snowfall: 0.5 inches
BHO SA 1455 X W2 2S-F 114/29/28/2604/987/ PCPN VRY LGT VRY LGT
RIME ICING WND LGT TOTAL NEW SNW PST 3 HRS 0.5 INS/ 8//// 53014
6002/
1 P.M.
Weather: Broken stratocumulus
Temperature: 33F; Dew Point: 28F; Relative Humidity: 80%
Wind: SW @ 9G17 kts
Sea-level pressure: 1009.7 mb; 29.82 in. Hg: falling unsteadily
Visibility: 30 miles, hazy
6-hr Max temp: 34F
6-hr Min temp: 27F
6-hr Precip: 0.02 inches
6-hr Snowfall: 0.5 inches
Snow Depth: 6 inches
BHO SA 1755 E30 BKN 30 097/33/28/2209G17/982/ HAZY
TOTAL NEW SNW PST 6 HRS 0.5 INS/ 8/500 4/006 57017 6002/
10034 20027
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SUMMARY FOR SUNDAY, JANUARY 18, 2026
TEMPERATURE (DEGREES F)
MAX…….33 NORMAL…..34
MIN…….28 NORMAL…..18
MEAN……31 NORMAL…..26
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+5
TOTAL DEPARTURE FOR THE MONTH………………………+71 [+3.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….34 DEPARTURE……..-5
TOTAL HEATING UNITS FOR THE MONTH……………612 DEPARTURE…….-72
TOTAL HEATING UNITS FOR THE SEASON………….2852 DEPARTURE…….-42
TOTAL HEATING UNITS LAST SEASON TO DATE……..2614 DEPARTURE……+238
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)………..22 S @ 08:03 A.M.
VECTOR #1 (1-Sec)……….22 S @ 07:59 A.M.
VECTOR #2 (1-Sec)……….21 S @ 07:57 A.M.
DAVIS #1……………….23 S @ 07:59 A.M.
DAVIS #2 ………………24 S @ 07:57 A.M.
RMY #1 (Instantaneous)…..21 S @ 07:59 A.M.
RMY #2 (Instantaneous)…..21 S @ 07:57 A.M.
MERLIN…………………19 S
RICHARDS (C5C) (Inst)……20 S @ 07:59 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 S @ 08:19 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16 S @ 08:00 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16 S @ 08:02 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………16 S @ 08:09 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 S @ 08:02 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 S @ 08:03 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 S @ 08:02 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………15 S @ 08:03 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………6.8 SSW [162 total miles]
VECTOR #1……………….7.4
VECTOR #2……………….7.6
DAVIS #1………………..6.9 SSW
DAVIS #2………………..7.3 SSW
RMY #1………………….7.5 WSW
RMY #2………………….7.8 WSW
RICHARDS (C5C)…………..7.3
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.53 DEPARTURE…..+0.39
TOTAL PRECIPITATION FOR THE MONTH (JAN)……..1.51 DEPARTURE…..-1.19
TOTAL PRECIPITATION FOR THE YEAR (2026)……..1.51 DEPARTURE…..-1.19
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..6.1 DEPARTURE…..+5.5
TOTAL SNOWFALL FOR THE MONTH (JAN)…………..9.5 DEPARTURE…..-0.8
TOTAL SNOWFALL FOR THE SEASON (2025-2026)……16.4 DEPARTURE…..-9.0
————————————————————–
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/-10/0.04/0.2/249/00 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/…/.. 39 SW VEC1 39 SW RMY 38
1/16 30/15/23/-3/0.00/0.0/…/.. 46 W VEC1 46 W RMY 46
1/17 38/24/31/+5/0.02/T/…/.. 39 SSW VEC1 39 SSW RMY 40
1/18 33/28/31/+5/0.44/4.4/…/.. 22 S VEC1 22 S RMY 21
1/19 The low since midnight is 27F, the daily normal low is 18F.
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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 19
HIGH 59F IN 1973
LOW -11F IN 1887
PRECIP 2.34 INS. IN 1936
SNOWFALL 10.5 INS. IN 1936
PEAK GUST 93e MPH WNW IN 1943
RECORDS FOR JANUARY 20
HIGH 59F IN 1951
LOW -9F IN 1901
PRECIP 1.95 INS. IN 1978
SNOWFALL 19.0 INS. IN 1978
PEAK GUST 76e MPH NE IN 1978
TODAY’S REPORT PREPARED BY: Matt Douglas
