Thursday, January 15, 2026
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, JANUARY 15, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0711E
SUNSET: 1637E
LAST DAY OF THE JANUARY THAW AND ABOVE NORMAL TEMPERATURES TODAY….
Clouds have been the main theme since yesterday with even some
very light intermittent rain occurring at times last evening
into early this morning. The rain was so light, however, that only
a trace was left in the gauge. As we reached the mid to late
morning hours, clouds started to break allowing for some partial
sunshine. With the mild air mass still in place, it’s turned into
a fairly decent day, save for the increasing wind.
Temperatures are running well above normal again today, but this
will be the end of the road for the current thaw period. We didn’t
drop below 40F degrees overnight with a low of 41F. As such,
readings have risen nicely into the low 50s early this afternoon.
Dew point values have been in the low to mid 40s, so the air mass
has quite a bit of moisture in it, for now!
The wind was fairly steady out overnight into this morning, but
as mentioned, it has started to increase a bit as we push into
the early afternoon hours. A south to south-southwest flow has
been gradually veering around to more of a westerly direction.
The average speed for the day so far is around 13mph. Gusts are
starting to be more frequently between 25-30mph, with a peak gust
for the day so far of 32mph, which occurred just after 12:30pm.
Visibility has been quite limited today, first due to thin fog
during the morning, but now due to haziness early this afternoon.
The view has been held to between 10-35 miles all day.
The maximum temperature so far today is 51F degrees, which is
27 degrees above the normal high of 34F. The minimum temperature
since midnight is 41F degrees, which is 23 degrees above the
normal low of 18F.
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Today’s Observations:
7 A.M.
Weather: Broken stratus fractus, overcast nimbostratus,
few breaks in overcast distant E-ESE
Temperature: 43F; Dew Point: 42F; Relative Humidity: 96%
Wind: SSW @ 12G18 kts
Sea-level pressure: 994.2 mb; 29.36 in. Hg: falling, then more slowly
Visibility: 10 miles, thin fog
6-hr Max temp: 43F
6-hr Min temp: 41F
24-hr Precip: Trace
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 E35 BKN 95 OVC 10 942/43/42/1912G18/936/ FEW BINOVC
DSNT E-ESE THN F ALQDS VIRGA ALQDS R-B08E43/ 8/72/ 56012 6000/
70000 10043 20041
10 A.M.
Weather: Broken stratocumulus, broken altocumulus
Temperature: 45F; Dew Point: 41F; Relative Humidity: 86%
Wind: SW @ 12G21 kts
Sea-level pressure: 993.9 mb; 29.35 in. Hg: falling, then rising
Visibility: 15 miles, thin fog
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E13 BKN 120 BKN 15 939/45/41/2212G21/935/ THN F ALQDS/
8/550 55003
1 P.M.
Weather: Broken stratocumulus, broken altocumulus
Temperature: 50F; Dew Point: 40F; Relative Humidity: 66%
Wind: WSW @ 15G26 kts, peak wind WSW 32mph at 12:38 P.M.
Sea-level pressure: 993.0 mb; 29.32 in. Hg: falling, then more slowly
Visibility: 35 miles, hazy
6-hr Max temp: 51F
6-hr Min temp: 43F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 E33 BKN 120 BKN 35 930/50/40/2415G26/932/
HAZY PK WND 2428/38/ 8/550 56009 10051 20043
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SUMMARY FOR WEDNESDAY, JANUARY 14, 2026
TEMPERATURE (DEGREES F)
MAX…….49 NORMAL…..34
MIN…….39 NORMAL…..18
MEAN……44 NORMAL…..26
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………+18
TOTAL DEPARTURE FOR THE MONTH………………………+52 [+3.5 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….21 DEPARTURE…….-18
TOTAL HEATING UNITS FOR THE MONTH……………475 DEPARTURE…….-53
TOTAL HEATING UNITS FOR THE SEASON………….2715 DEPARTURE…….-23
TOTAL HEATING UNITS LAST SEASON TO DATE……..2461 DEPARTURE……+254
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)………..36 SSW @ 01:23 A.M.
VECTOR #1 (1-Sec)……….36 SSW @ 01:23 A.M.
VECTOR #2 (1-Sec)……….32 SSW @ 01:23 A.M.
DAVIS #1……………….37 S @ 12:44 A.M.
DAVIS #2 ………………34 S @ 12:47 A.M.
RMY #1 (Instantaneous)…..36 SSW @ 01:23 A.M.
RMY #2 (Instantaneous)…..34 SSW @ 02:57 A.M.
MERLIN…………………32 SSW
RICHARDS (C5C) (Inst)……36 SSW @ 02:25 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………23 SSW @ 02:48 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..23 SSW @ 02:57 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..24 SSW @ 12:25 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………23 S @ 02:57 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………25 SSW @ 12:26 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..23 SSW @ 12:30 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..24 SSW @ 12:25 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………22 SSW @ 02:57 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..12.9 SSW [310 total miles]
VECTOR #1………………13.2
VECTOR #2………………13.5
DAVIS #1……………….12.7 SSW
DAVIS #2……………….14.0 SSW
RMY #1…………………13.0 SSW
RMY #2…………………13.7 SSW
RICHARDS (C5C)………….12.7
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE MONTH (JAN)……..0.96 DEPARTURE…..-1.15
TOTAL PRECIPITATION FOR THE YEAR (2026)……..0.96 DEPARTURE…..-1.15
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)…………..3.4 DEPARTURE…..-4.5
TOTAL SNOWFALL FOR THE SEASON (2025-2026)……10.3 DEPARTURE….-12.7
————————————————————–
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 The low since midnight is 41F, 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 15
HIGH 64F IN 1995
LOW -16F IN 1957 [RECORD LOW FOR MONTH]
PRECIP 2.63 INS. IN 1958
SNOWFALL 8.8 INS. IN 1983
PEAK GUST 69e MPH SE IN 1940
RECORDS FOR JANUARY 16
HIGH 63F IN 1995
LOW -12F IN 2004
PRECIP 1.32 INS. IN 1936
SNOWFALL 14.0 INS. IN 1965
PEAK GUST 79 MPH WNW IN 1960
TODAY’S REPORT PREPARED BY: Matt Douglas
