Tuesday, January 6, 2026
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, JANUARY 6, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0713E
SUNSET: 1627E
A TOUCH MORE SNOW OVERNIGHT; OVERCAST AND COLD TODAY WITH LIGHT WIND….
Yet another weak system passed through overnight bringing with it
another area of light snow and freezing drizzle to the area. 0.2″
of snow was measured with 0.04″ of liquid equivalent between the
snow and ice. All of this activity moved out by 3am this morning.
Today has featured mainly cloudy skies with a brief period of
sunshine early this morning. With very high relative humidity
levels and thin fog in the air, we experience very light rime
icing through most of the morning, something that doesn’t happen
too often here at Blue Hill.
Temperatures are still below normal today. Readings actually stayed
above 20F overnight, but have only risen to the upper 20s by early
this afternoon. Dew point values have been hanging generally in the
mid 20s so far today, which has been close to the air temperature
indicating a rather moisture-rich air mass. This is of course not
helpful when it’s already cold out there.
The wind has been quite light today, only averaging at around 5mph
for the day so far. The peak gust for the day so far, or should we
call it the peak zephyr, was only 12mph. This occurred right at
midnight.
Visibility has been limited all day due to thin fog and haze. The
view has been under 10 miles all day.
The maximum temperature so far today is 28F degrees, which is
7 degrees below the normal high of 35F. The minimum temperature
since midnight is 22F degrees, which is 2 degrees above the
normal low of 20F.
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Today’s Observations:
7 A.M.
Weather: Overcast altocumulus, very light rime icing
Temperature: 24F; Dew Point: 23F; Relative Humidity: 94%
Wind: N @ 5 kts, wind light
Sea-level pressure: 1016.6 mb; 30.02 in. Hg: rising, then falling
Visibility: 8 miles, thin fog
6-hr Max temp: 27F
6-hr Min temp: 23F
24-hr Precip: 0.04 inches
24-hr Snowfall: 0.2 inches
Snow Depth: 2 inches
BHO SA 1155 E60 OVC 8 166/24/23/0105/002/ THN F ALQDS VRY LGT RIME ICING
WND LGT TOTAL NEW SNW PST 24 HRS 0.2 INS/ 8/05/ 4/002 50005 6000/ 70004
10027 20023
10 A.M.
Weather: Overcast stratus, very light rime icing
Temperature: 26F; Dew Point: 25F; Relative Humidity: 94%
Wind: NNE @ 4 kts, wind light
Sea-level pressure: 1017.9 mb; 30.06 in. Hg: rising, then more slowly
Visibility: 8 miles, thin fog
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E6 OVC 8 179/26/25/0304/006/ THN F ALQDS SUN DMLY VSBL
VRY LGT RIME ICING WND LGT/ 8/6// 51013
1 P.M.
Weather: Overcast stratus
Temperature: 27F; Dew Point: 26F; Relative Humidity: 94%
Wind: ESE @ 3 kts, wind light
Sea-level pressure: 1015.8 mb; 30.00 in. Hg: falling, then more rapidly
Visibility: 5 miles, fog
6-hr Max temp: 28F
6-hr Min temp: 24F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 2 inches
BHO SA 1755 E2 OVC 5F 158/27/26/1103/000/ WND LGT/ 8/6// 4/002
58021 10028 20024
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SUMMARY FOR MONDAY, JANUARY 5, 2026
TEMPERATURE (DEGREES F)
MAX…….25 NORMAL…..36
MIN…….11 NORMAL…..20
MEAN……18 NORMAL…..28
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………-10
TOTAL DEPARTURE FOR THE MONTH………………………-36 [-7.4 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….47 DEPARTURE…….+10
TOTAL HEATING UNITS FOR THE MONTH……………220 DEPARTURE…….+36
TOTAL HEATING UNITS FOR THE SEASON………….2460 DEPARTURE…….+66
TOTAL HEATING UNITS LAST SEASON TO DATE……..2096 DEPARTURE……+364
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)………..23 SSE @ 08:13 P.M.
VECTOR #1 (1-Sec)……….22 NW @ 12:17 A.M.
VECTOR #2 (1-Sec)……….23 NW @ 01:16 A.M.
DAVIS #1……………….23 NW @ 12:17 A.M.
DAVIS #2 ………………25 SSE @ 07:36 P.M.
RMY #1 (Instantaneous)…..23 NW @ 12:17 A.M.
RMY #2 (Instantaneous)…..22 NW @ 01:16 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)……22 NW @ 12:17 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 NNW @ 01:18 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16 NNW @ 01:18 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16 NW @ 01:18 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………16 NNW @ 01:18 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 N @ 01:18 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 NNW @ 01:18 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 NNW @ 01:18 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………16 NNW @ 01:18 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………7.2 WNW [181 total miles]
VECTOR #1……………….7.6
VECTOR #2……………….7.9
DAVIS #1………………..7.3 WNW
DAVIS #2………………..7.1 NNW
RMY #1………………….7.3 W
RMY #2………………….7.8 WSW
RICHARDS (C5C)…………..M
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.04 DEPARTURE…..-0.11
TOTAL PRECIPITATION FOR THE MONTH (DEC)……..0.22 DEPARTURE…..-0.54
TOTAL PRECIPITATION FOR THE YEAR (2025)……..0.22 DEPARTURE…..-0.54
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)…………..3.3 DEPARTURE…..+0.6
TOTAL SNOWFALL FOR THE SEASON (2025-2026)……10.2 DEPARTURE…..-7.6
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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/…/.. 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 30/21/26/-2/0.03/0.4/…/.. 26 NNW VEC1 27 NNW RMY 28
1/5 25/11/18/-10/0.04/0.2/…/.. 23 SSE VEC1 22 NW RMY 23
1/6 The low since midnight is 22F, 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 6
HIGH 66F IN 2007
LOW -14F IN 1896
PRECIP 3.10 INS. IN 1889 [RECORD FOR MONTH]
SNOWFALL 5.2 INS. IN 2005
PEAK GUST 70 MPH WNW IN 1959
RECORDS FOR JANUARY 7
HIGH 60F IN 1930
LOW -8F IN 2018
PRECIP 1.97 INS. IN 1977
SNOWFALL 16.0 INS. IN 1977
PEAK GUST 74 MPH NW IN 1968
TODAY’S REPORT PREPARED BY: Matt Douglas
