Friday, January 9, 2026
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, JANUARY 9, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0713E
SUNSET: 1630E
MORNING SUNSHINE FOLLOWED BY INCREASING CLOUDS AND AFTERNOON
BREEZY CONDITIONS….
Today we started with plenty of sunshine with scattered clouds
and thin fog. The fog lifted by mid morning and increasing
clouds moved into the area as a warm front slowly approached.
Temperatures have remained mild today, with our overnight low a
whopping 13 degrees above normal. Temperatures steadied at 32F
this morning and have risen to the mid 40’s by afternoon. The
dew points have also increased, starting from 32F to the low 40’s
by the early afternoon.
The wind shifted to a southerly direction during the early morning
hours and for much of the observation period have been out of the
south-southwest. The average so far is around 10mph, though we
have had some frequent gusts of 20-25mph which started after 10:30am.
The peak gust for the day so far is 37mph, which occurred just
before 12:30pm this afternoon.
Visibility was impacted by fog and a smoke layer this morning, but
has marginally improved, from 30 miles this morning to around 40
miles by early afternoon.
The maximum temperature so far today is 43F degrees, which is
8 degrees above the normal high of 35F. The minimum temperature
since midnight is 32F degrees, which is 13 degrees above the
normal low of 19F.
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Today’s Observations:
7 A.M.
Weather: Scattered altocumulus
Temperature: 33F; Dew Point: 32F; Relative Humidity: 95%
Wind: S @ 11 kts
Sea-level pressure: 1026.4 mb; 30.31 in. Hg: falling, then
steady
Visibility: 30 miles, thin fog
6-hr Max temp: 35F
6-hr Min temp: 32F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: Trace
BHO SA 1155 150 SCT 30 264/33/32/1711/031/ THN F ALQDS/ 8/050
4/000 56005 10035 20032
10 A.M.
Weather: Scattered altocumulus, scattered cirrus, few
stratus fractus NE-E
Temperature: 38F; Dew Point: 33F; Relative Humidity: 83%
Wind: SSW @ 12G20 kts
Sea-level pressure: 1025.1 mb; 30.27 in. Hg: falling, then
more rapidly
Visibility: 40 miles, thin fog NNE-ESE, smoke layer WNW-NE
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 150 SCT 250 SCT 40 251/38/33/2012G20/027/ FEW STFRA
NE-E THN F NNE-ESE K LYR WNW-NE 8/651 58013
1 P.M.
Weather: Overcast stratocumulus
Temperature: 43F; Dew Point: 40F; Relative Humidity: 87%
Wind: SSW @ 16G25 kts, peak wind 37mph SSW at 12:25 P.M.
Sea-level pressure: 1021.7 mb; 30.17 in. Hg: rising, then more slowly
Visibility: 40 miles
6-hr Max temp: 43F
6-hr Min temp: 32F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: Trace
BHO SA 1755 E2 OVC 40 216/43/40/2016G25/017/ PK WND 2032/25/ 8/5//
4/000 58035 10043 20032
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SUMMARY FOR THURSDAY, JANUARY 8, 2026
TEMPERATURE (DEGREES F)
MAX…….45 NORMAL…..35
MIN…….30 NORMAL…..19
MEAN……38 NORMAL…..27
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………+11
TOTAL DEPARTURE FOR THE MONTH………………………-20 [-2.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….27 DEPARTURE…….+11
TOTAL HEATING UNITS FOR THE MONTH……………317 DEPARTURE…….+19
TOTAL HEATING UNITS FOR THE SEASON………….2557 DEPARTURE…….+50
TOTAL HEATING UNITS LAST SEASON TO DATE……..2233 DEPARTURE……+324
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)………..26 NW @ 03:39 P.M.
VECTOR #1 (1-Sec)……….27 WNW @ 04:13 A.M.
VECTOR #2 (1-Sec)……….25 WNW @ 03:03 A.M.
DAVIS #1……………….24 WNW @ 04:14 A.M.
DAVIS #2 ………………23 NW @ 03:04 A.M.
RMY #1 (Instantaneous)…..27 WNW @ 04:13 A.M.
RMY #2 (Instantaneous)…..26 WNW @ 03:04 A.M.
MERLIN…………………22 NW
RICHARDS (C5C) (Inst)……24 WNW @ 04:13 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 WNW @ 02:44 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16 WNW @ 02:44 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..19 WNW @ 03:04 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………16 WNW @ 03:33 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 NW @ 03:05 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..16 NW @ 03:32 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 WNW @ 03:04 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………16 NW @ 04:15 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………9.8 WNW [236 total miles]
VECTOR #1………………10.1
VECTOR #2………………11.2
DAVIS #1……………….10.5 WNW
DAVIS #2……………….10.8 NW
RMY #1………………….9.9 WNW
RMY #2…………………10.9 WNW
RICHARDS (C5C)………….10.4
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)……..0.48 DEPARTURE…..-0.73
TOTAL PRECIPITATION FOR THE YEAR (2026)……..0.48 DEPARTURE…..-0.73
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE…..-0.5
TOTAL SNOWFALL FOR THE MONTH (JAN)…………..3.4 DEPARTURE…..-0.9
TOTAL SNOWFALL FOR THE SEASON (2025-2026)……10.3 DEPARTURE…..-9.1
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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/-10/0.04/0.2/249/00 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/…/.. 26 NW VEC1 27 WNW RMY 27
1/9 The low since midnight is 32F, the daily normal low is 19F.
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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 9
HIGH 62F IN 1937
LOW -9F IN 1968
PRECIP 3.00 INS. IN 1956
SNOWFALL 10.0 INS. IN 1904
PEAK GUST 101e MPH SE IN 1978 [RECORD FOR MONTH]
RECORDS FOR JANUARY 10
HIGH 58F IN 2016
LOW -7F IN 2004
PRECIP 2.74 INS. IN 1935
SNOWFALL 8.0 INS. IN 1896
PEAK GUST 73e SE IN 1977
TODAY’S REPORT PREPARED BY: Amanda Joly
