Sunday, January 4, 2026
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, JANUARY 4, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0713E
SUNSET: 1625E
ANOTHER CLIPPER BRINGS A TOUCH OF LIGHT SNOW THIS MORNING,
OTHERWISE CONTINUING THE THEME OF BELOW NORMAL TEMPERATURES….
A quick moving Alberta Clipper passed through the region this
morning bringing with it a few hours of light snow. 0.4″ of snow
accumulated from this system, which underscores just how light,
but steady the snow was. This melted down to 0.03″ of liquid, so
it was a “drier” snow than the standard 10:1 ratio.
The snow came to an end right around 10:30am this morning with
breaks developing in the cloud cover. A mix of sun and clouds
has been the theme since. More flurries are popping up however
as the heating of day is contributing to the convective process
as very cold air remains aloft.
Temperatures have pushed into the upper 20s to around 30F early
this afternoon. While still below normal, it is a nice reprieve
from the arctic chill that we experienced a couple of days ago.
Dew point values have been higher today as one would expect with
precipitation in the area. They were holding in the lower 20s
through the morning, but have now started to drop off a bit back
into the upper teens.
Another nice feature today is the lack of wind so far. A general
northwest to north-northwest flow has only been averaging at
around 7mph for the day so far. The peak gust so far is 20mph,
which occurred just after 12:40pm. Unfortunately, the wind will
be increasing later on as another arctic air mass moves into the
region.
Visibility started very limited this morning due to the snow,
it was generally under 3 miles before improving late this morning.
By early this afternoon the view is upto around 60 miles.
The maximum temperature so far today is 30F degrees, which is
6 degrees below the normal high of 36F. The minimum temperature
since midnight is 21F degrees, which is 1 degree above the
normal low of 20F.
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Today’s Observations:
7 A.M.
Weather: Overcast nimbostratus, light snow
Temperature: 22F; Dew Point: 21F; Relative Humidity: 95%
Wind: NW @ 6 kts, wind light
Sea-level pressure: 1016.5 mb; 30.02 in. Hg: rising, then more slowly
Visibility: 2.5 miles, fog
6-hr Max temp: 23F
6-hr Min temp: 21F
24-hr Precip: 0.01 inches
24-hr Snowfall: 0.2 inches
Snow Depth: 2 inches
BHO SA 1155 E30 OVC 21/2S-F 165/22/21/3206/002/ WND LGT
TOTAL NEW SNW PST 24 HRS 0.2 INS/ 8//// 4/002 51013 6001/
70001 10023 20021
10 A.M.
Weather: Broken stratocumulus, broken cirrus, very ligt snow
Temperature: 25F; Dew Point: 21F; Relative Humidity: 85%
Wind: NNW @ 4 kts, wind light
Sea-level pressure: 1018.1 mb; 30.06 in. Hg: rising, then more rapidly
Visibility: 8 miles, thin fog
3-hr Precip: 0.02 inches
3-hr Snowfall: 0.2 inches
BHO SA 1455 E30 BKN 250 BKN 8S- 181/25/21/3404/006/ THN F ALQDS
PCPN VRY LGT WND LGT TOTAL NEW SNW PST 3 HRS 0.2 INS/ 8/501
53016 6002/
1 P.M.
Weather: Broken stratocumulus, virga distant W-NW-NNE
Temperature: 28F; Dew Point: 18F; Relative Humidity: 67%
Wind: NW @ 8 kts
Sea-level pressure: 1016.4 mb; 30.01 in. Hg: falling, then more slowly
Visibility: 60 miles
6-hr Max temp: 30F
6-hr Min temp: 22F
6-hr Precip: 0.02 inches
6-hr Snowfall: 0.2 inches
Snow Depth: 2 inches
BHO SA 1755 E30 BKN 60 164/28/18/3208/001/ SW-B40E43 VIRGA DSNT
W-NW-NNE TOTAL NEW SNW PST 6 HRS 0.2 INS/ 8/500 4/002 56017 6002/
10030 20022
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SUMMARY FOR SATURDAY, JANUARY 3, 2026
TEMPERATURE (DEGREES F)
MAX…….30 NORMAL…..36
MIN…….14 NORMAL…..20
MEAN……22 NORMAL…..28
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-6
TOTAL DEPARTURE FOR THE MONTH………………………-24 [-8.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….43 DEPARTURE……..+6
TOTAL HEATING UNITS FOR THE MONTH……………134 DEPARTURE…….+24
TOTAL HEATING UNITS FOR THE SEASON………….2374 DEPARTURE…….+54
TOTAL HEATING UNITS LAST SEASON TO DATE……..2017 DEPARTURE……+357
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)………..31 WNW @ 01:29 P.M.
VECTOR #1 (1-Sec)……….31 WNW @ 01:29 P.M.
VECTOR #2 (1-Sec)……….34 W @ 01:29 P.M.
DAVIS #1……………….30 W @ 01:30 P.M.
DAVIS #2 ………………32 WNW @ 01:29 P.M.
RMY #1 (Instantaneous)…..31 WNW @ 01:29 P.M.
RMY #2 (Instantaneous)…..34 W @ 01:29 P.M.
MERLIN…………………28 WNW
RICHARDS (C5C) (Inst)……30 WNW @ 01:29 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………23 W @ 04:29 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..21 WNW @ 01:30 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..25 W @ 01:31 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………24 W @ 12:05 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………24 WNW @ 01:31 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..20 WNW @ 01:31 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..24 W @ 01:31 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………20 WNW @ 01:31 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..11.0 W [265 total miles]
VECTOR #1………………11.0
VECTOR #2………………11.4
DAVIS #1……………….11.5 W
DAVIS #2……………….11.4 W
RMY #1…………………10.6 W
RMY #2…………………11.2 WSW
RICHARDS (C5C)………….11.0
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.01 DEPARTURE…..-0.14
TOTAL PRECIPITATION FOR THE MONTH (DEC)……..0.16 DEPARTURE…..-0.30
TOTAL PRECIPITATION FOR THE YEAR (2025)……..0.16 DEPARTURE…..-0.30
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.2 DEPARTURE…..-0.3
TOTAL SNOWFALL FOR THE MONTH (DEC)…………..2.9 DEPARTURE…..+1.3
TOTAL SNOWFALL FOR THE SEASON (2025-2026)…….9.8 DEPARTURE…..-6.9
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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/…/.. 43 NW VEC1 43 NW RMY 42
1/2 25/12/19/-9/0.00/0.0/…/.. 26 W VEC1 26 W RMY 27
1/3 30/14/22/-6/0.00/0.0/…/.. 31 WNW VEC1 31 WNW RMY 31
1/4 The low since midnight is 21F, the daily normal low is 20F.
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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 4
HIGH 60F IN 2000
LOW -8F IN 1904, 1981
PRECIP 1.79 INS. IN 1982
SNOW 16.5 INS. IN 2018
PEAK GUST 84 MPH S IN 1982
RECORDS FOR JANUARY 5
HIGH 61F IN 2007
LOW -9F IN 1981
PRECIP 1.15 INS. IN 2019
SNOW 4.5 INS. IN 1891
PEAK GUST 70 MPH WNW IN 1959
TODAY’S REPORT PREPARED BY: Matt Douglas
