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Thursday, March 5, 2026

March 5, 2026

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA THURSDAY, MARCH 5, 2026 ALL TIMES ARE…

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

THURSDAY, MARCH 5, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0613E
SUNSET:  1739E

INCREASING CLOUDS THROUGH THE MORNING WITH RAIN DEVELOPING
BEFORE NOON….

Clouds have been the theme today with increasing and thickening
cloud cover through the morning. Rain started fall just after
11:15am and has been falling lightly since. Only a trace has
been measured so far.

We’ve had a much different temperature profile here on the
summit than most surrounding areas. Due to being above an
inversion, our overnight temperatures generally held in the
upper 30s while many surrounding stations were in the mid
to upper 20s. Also, while most places never got above the
mid to upper 30s this morning, we rose to 46F this morning
before finally dropping back to the mid 30s early this
afternoon. As a matter of fact, our low temperature for the
day so far is occurring this afternoon. Dew point values have
been holding in the low-mid 30s throughout the day so far.

The wind started the day on the light side out of a westerly
direction. It then transitioned to a northeast flow and has
been increasing since about the mid morning hours. By early
this afternoon it has become quite gusty with values
approaching 30mph. The average speed for the day so far is
around 9mph, but it has been closer to 13mph the last hour.
The peak gust so far for the day is 29mph, which occurred
just before 1:45pm this afternoon.

Visibility was excellent this morning, but quickly
deteriorated with the onset of the rain. The view was around
70 miles during the morning, dropping to around 15 miles by
the 1pm observation. Now it’s under 2 miles as of this writing.

The maximum temperature so far today is 46F degrees, which is
5 degrees above the normal high of 41F. The minimum temperature
since midnight is 37F degrees, which is 7 degrees above the
normal low of 24F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Overcast cirrostratus, breaks in overcast distant NW-NE
and distant SE
Temperature: 42F; Dew Point: 33F; Relative Humidity: 69%
Wind: NW @ 4 kts, wind light
Sea-level pressure: 1024.7 mb; 30.26 in. Hg: rising, then more rapidly
Visibility: 70 miles
6-hr Max temp: 42F
6-hr Min temp: 38F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 21 inches
BHO SA 1155 E220 OVC 70 247/42/33/3104/026/ BINOVC DSNT NW-NE
AND DSNT SE/ 8/006 4/021 53006 10042 20038

10 A.M.
Weather: Broken altocumulus/altostratus, overcast cirrostratus,
few breaks in overcast distant NW-ENE
Temperature: 42F; Dew Point: 33F; Relative Humidity: 68%
Wind: NE @ 9 kts
Sea-level pressure: 1026.3 mb; 30.31 in. Hg: rising, then more slowly
Visibility: 70 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E120 BKN 200 OVC 70 263/42/33/0509/031/
FEW BINOVC DSNT NW-ENE THN K LYR BLW INVSRN ALQDS/ 8/076 51016

1 P.M.
Weather: Scattered stratocumulus, overcast nimbostratus,
very light rain
Temperature: 37F; Dew Point: 34F; Relative Humidity: 88%
Wind: NE @ 14G23 kts
Sea-level pressure: 1027.2mb; 30.33 in. Hg: rising, then falling
Visibility: 15 miles, thin fog
6-hr Max temp: 46F
6-hr Min temp: 37F
6-hr Precip: Trace
6-hr Snowfall: 0.0 inches
Snow Depth: 20 inches
BHO SA 1755 10 SCT E85 OVC 15R- 272/37/34/0514G23/033/
THN F ALQDS PCPN VRY LGT/ 8/52/ 4/020 50009 6000/ 10046 20037

————————————————————–

SUMMARY FOR WEDNESDAY, MARCH 4, 2026

TEMPERATURE (DEGREES F)
MAX…….54   NORMAL…..41
MIN…….30   NORMAL…..23
MEAN……42   NORMAL…..32

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………+10
TOTAL DEPARTURE FOR THE MONTH………………………-14 [-3.7 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….23  DEPARTURE…….-10
TOTAL HEATING UNITS FOR THE MONTH (FEB)………147  DEPARTURE…….+14
TOTAL HEATING UNITS FOR THE SEASON………….4689  DEPARTURE……+124
TOTAL HEATING UNITS LAST SEASON TO DATE……..4328  DEPARTURE……+361

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)………..20 W    @   11:11 P.M.
VECTOR #1 (1-Sec)……….19 W    @   10:50 P.M.
VECTOR #2 (1-Sec)……….20 W    @   11:13 P.M
DAVIS #1……………….19 WSW  @   10:49 P.M.
DAVIS #2 ………………19 W    @   11:13 P.M.
RMY #1 (Instantaneous)…..20 W    @   11:11 P.M.
RMY #2 (Instantaneous)…..19 W    @   11:14 P.M.
MERLIN…………………19 W
RICHARDS (C5C) (Inst)……19 W    @   10:56 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 W    @   10:57 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15 W    @   11:18 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16 W    @   11:15 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………16 W    @   11:16 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 W    @   11:15 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 W    @   10:56 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 W    @   11:16 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………14 W    @   10:56 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………6.9 WSW [166 total miles] VECTOR #1……………….7.1
VECTOR #2…………………M
DAVIS #1………………….M
DAVIS #2………………….M
RMY #1……………………M
RMY #2……………………M
RICHARDS (C5C)…………….M

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH (MAR)……..0.75 DEPARTURE…..+0.06
TOTAL PRECIPITATION FOR THE YEAR (2026)……..7.34 DEPARTURE…..-1.85

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE…..-0.7
TOTAL SNOWFALL FOR THE MONTH (MAR)…………..2.4 DEPARTURE…..-0.2
TOTAL SNOWFALL FOR THE SEASON (2025-2026)……81.1 DEPARTURE….+26.6

————————————————————–

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  The low since midnight is 38F, the daily normal low is 24F.

————————————————————–

MARCH DAILY RECORDS TO DATE

NONE.

————————————————————–

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

RECORDS FOR MARCH 5
HIGH 64 IN 1979
LOW -2 IN 1948
PRECIP 1.76 INS. IN 1920, 2001
SNOWFALL 12.0 INS. IN 1917
PEAK GUST 76e MPH WNW IN 1971

RECORDS FOR MARCH 6
HIGH 66 IN 1894
LOW 3 IN 1948, 2007
PRECIP 1.85 INS. IN 2001
SNOWFALL 15.5 INS. IN 2001
PEAK GUST 82 MPH S IN 1959

TODAY’S REPORT PREPARED BY: Matt Douglas

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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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