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Friday, March 13, 2026

March 13, 2026

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA FRIDAY, MARCH 13, 2026 ALL TIMES ARE…

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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

FRIDAY, MARCH 13, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0559E
SUNSET:  1748E

FAIR AND COLDER WEATHER TODAY WITH AN INCREASE IN CLOUDS….

Today has been quiet and dry with clear skies this morning giving
way to increasing high cirrus clouds. There was plenty of sunshine,
through the morning, but has become very filtered early this
afternoon.

Temperatures have been close to normal today, with readings early
this morning dropping to the mid 20s. They have recovered to
the low 40s by early this afternoon. Dew point values have been
on the low side, generally in the low 20s, which is indicative of
much drier air over the region today compared to the last couple
of days.

The wind was steady overnight into very early this morning, but
has dropped off to light speeds by the mid to late morning hours.
It has been increasing a bit once again early this afternoon.
The direction gradually shifted from northwest this morning to
the southwest by early this afternoon. The average speed for the
day so far is around 10mph. The peak gust for the day so far is
32mph, which occurred just before 1am this morning.

Visibility has been excellent all day, holding at around 70 miles.

The maximum temperature so far today is 42F degrees, which is
1 degree below the normal high of 43F. The minimum temperature
since midnight is 25F degrees, which is 1 degree below the
normal low of 26F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus distant WNW-NW
Temperature: 28F; Dew Point: 18F; Relative Humidity: 64%
Wind: W @ 7 kts
Sea-level pressure: 1018.5 mb; 30.08 in. Hg: rising, then more rapidly
Visibility: 70 miles
6-hr Max temp: 29F
6-hr Min temp: 25F
24-hr Precip: 0.02 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 CLR 70 185/28/18/2807/008/ FEW SC DSNT WNW-NW/
8/500 53036 70002 10029 20025

10 A.M.
Weather: Scattered cirrus, few stratocumulus all quadrants
Temperature: 36F; Dew Point: 22F; Relative Humidity: 57%
Wind: SW @ 5 kts, wind light
Sea-level pressure: 1018.9 mb; 30.09 in. Hg: rising, then falling
Visibility: 70 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 250 SCT 70 189/36/22/2205/009/ FEW SC ALQDS WND LGT/
8/501 50004

1 P.M.
Weather: Overcast cirrus, few breaks in overcast distant NE-SE,
few stratocumulus distant N-NNE and distant E-ESE
Temperature: 40F; Dew Point: 14F; Relative Humidity: 35%
Wind: SW @ 10G19 kts
Sea-level pressure: 1017.2mb; 30.04 in. Hg: falling, then more rapidly
Visibility: 70 miles
6-hr Max temp: 42F
6-hr Min temp: 28F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 E250 OVC 70 172/40/14/2310G19/004/ FEW BINOVC DSNT
NE-SE FEW SC DSNT N-NNE AND DSNT E-ESE/ 8/502 58017 10042 20028

————————————————————–

SUMMARY FOR THURSDAY, MARCH 12, 2026

TEMPERATURE (DEGREES F)
MAX…….57   NORMAL…..43
MIN…….30   NORMAL…..26
MEAN……44   NORMAL…..34

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………+10
TOTAL DEPARTURE FOR THE MONTH………………………+89 [+7.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….21  DEPARTURE…….-10
TOTAL HEATING UNITS FOR THE MONTH (MAR)………298  DEPARTURE…….-90
TOTAL HEATING UNITS FOR THE SEASON………….4840  DEPARTURE…….+20
TOTAL HEATING UNITS LAST SEASON TO DATE……..4517  DEPARTURE……+323

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)………..35 NW   @   11:17 P.M.
VECTOR #1 (1-Sec)……….34 WNW  @   10:11 A.M.
VECTOR #2 (1-Sec)……….37 WNW  @   11:37 P.M.
DAVIS #1……………….36 W    @   11:31 P.M.
DAVIS #2 ………………38 S    @   04:57 A.M.
RMY #1 (Instantaneous)…..37 WNW  @   11:31 P.M.
RMY #2 (Instantaneous)…..37 WNW  @   11:37 P.M.
MERLIN…………………35 NW
RICHARDS (C5C) (Inst)……36 WNW  @   11:31 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………25 WNW  @   11:17 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..23 WNW  @   11:32 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..26 WNW  @   11:32 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………25 WNW  @   11:33 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………25 NW   @   11:32 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..23 WNW  @   11:32 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..25 WNW  @   10:11 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………24 WNW  @   11:32 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..14.9 WNW [358 total miles] VECTOR #1………………14.8
VECTOR #2………………15.9
DAVIS #1……………….15.1 W
DAVIS #2……………….15.8 W
RMY #1…………………14.6 W
RMY #2…………………15.7 W
RICHARDS (C5C)………….14.7

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.02 DEPARTURE…..-0.15
TOTAL PRECIPITATION FOR THE MONTH (MAR)……..2.03 DEPARTURE…..-0.06
TOTAL PRECIPITATION FOR THE YEAR (2026)……..8.62 DEPARTURE…..-1.97

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………TRACE DEPARTURE…..-0.6
TOTAL SNOWFALL FOR THE MONTH (MAR)…………..2.4 DEPARTURE…..-4.8
TOTAL SNOWFALL FOR THE SEASON (2025-2026)……81.1 DEPARTURE….+22.0

————————————————————–

PRELIMINARY CLIMATE SUMMARY FOR MARCH 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

3/1  37/19/28/-3/0.10/1.9/209/31         30 NNW VEC1 31 NNW RMY 31
3/2  28/8/18/-14/0.00/0.0/665/98         25 N   VEC1 25 NNW RMY 25
3/3  32/17/25/-7/0.43/0.5/211/31         21 S   VEC1 21 S   RMY 22
3/4  54/30/42/+10/0.22/0.0/670/98        20 W   VEC1 19 W   RMY 20
3/5  46/33/40/+8/0.36/0.0/000/00         35 ENE VEC1 35 ENE RMY 38
3/6  33/26/30/-3/0.06/T/000/00           32 ENE VEC1 32 ENE RMY 33
3/7  46/32/39/+6/0.01/0.0/000/00         39 SSW VEC1 39 SSW RMY 42
3/8  54/46/50/+17/0.01/0.0/…/..        33 SSW VEC1 34 SSW RMY 34
3/9  67/45/56/+23/0.00/0.0/…/..        30 SSW VEC1 30 SW  RMY 31
3/10 74/48/61/+27/0.00/0.0/…/..        28 SW  VEC1 27 WSW RMY 28
3/11 59/39/49/+15/0.12/0.0/…/..        38 SSW VEC1 38 SSW RMY 42
3/12 57/30/44/+10/0.18/T/…/..          35 NW  VEC1 34 WNW RMY 37

3/13 The low since midnight is 25F, the daily normal low is 26F.

————————————————————–

MARCH DAILY RECORDS TO DATE

3/9  RECORD HIGH MINIMUM TEMPERATURE OF 45F,
BEATING THE PREVIOUS RECORD OF 42F SET IN 1922

3/10 RECORD HIGH MAXIMUM TEMPERATURE OF 74F,
BEATING THE PREVIOUS RECORD OF 69F SET IN 1977

————————————————————–

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

RECORDS FOR MARCH 13
HIGH 72 IN 1990
LOW -1 IN 1885
PRECIP 2.47 INS. IN 1993
SNOWFALL 23.0 INS. IN 2018 [RECORD FOR MONTH] PEAK GUST 76 MPH ENE IN 1993 [THE “STORM OF THE CENTURY”]

RECORDS FOR MARCH 14
HIGH 74 IN 1946
LOW 7 IN 1896
PRECIP 4.95 INS. IN 2010
SNOWFALL 7.3 INS. IN 2017
PEAK GUST 67 MPH ENE IN 2010

TODAY’S REPORT PREPARED BY: Matt Douglas

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Blue Hill Observatory & Science Center · Legal

Data Use & Privacy Policy

Please read the full Policy before accessing Observatory data · Effective January 1, 2025

Notice: By accessing, downloading, or using any Blue Hill Observatory data or services, you unconditionally accept and agree to be bound by this Policy in its entirety. If you do not agree, you may not access or use Observatory data.
Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
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