Sunday, March 29, 2026

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

SUNDAY, MARCH 29, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0532E
SUNSET: 1807E

COLD START, BUT TURNING SEASONABLE UNDER MAINLY SUNNY SKIES….

Today has been a very nice day overall with plenty of sunshine after
some mid level clouds passed through early this morning. An area of
high pressure crested to our south early this morning, but has since
pushed eastward. The day did start on the cold side thanks to the
high pulling cold air down from Canada. With the axis of the high
now to the east of our longitude, the flow has backed from west-
northwest to southwest, allowing for milder air to start pushing
into the region.

As noted, temperatures started the day on the cold side with lows
in the mid 20s. We have warmed to near seasonable levels by early
this afternoon as readings have reached the mid to upper 40s. Dew
points however remain pretty low for this time of year with readings
in the mid to upper teens. This is causing relative humidity values
to drop to near 30% early this afternoon, leading to an elevated
fire risk across the area.

Winds started off fairly steady around 10mph through the morning,
but have been increasing over the last hour or two. Gusts have
been more frequently exceeding 20mph since around 11am. The peak
gust for the day so far is 29mph, which occurred just before
12:45pm this afternoon.

The visibility has been decent today, starting at around 50 miles
early this morning, then rising a bit to around 70 miles by early
this afternoon.

The maximum temperature so far today is 48F degrees, which is
equal to the normal high of 48F. The minimum temperature since
midnight is 24F degrees, which is 7 degrees below the normal low
of 31F.

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Today’s Observations:

7 A.M.
Weather: Broken altocumulus, few stratocumulus offshore distant NE-ESE
Temperature: 27F; Dew Point: 16F; Relative Humidity: 61%
Wind: W @ 7kts
Sea-level pressure: 1035.7 mb; 30.58 in. Hg: rising, then more slowly
Visibility: 50 miles
6-hr Max temp: 27F
6-hr Min temp: 24F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 E90 BKN 50 357/27/16/2607/058/ FEW SC OFFSHR DSNT
NE-ESE/ 8/550 51017 10027 20024

10 A.M.
Weather: Clear, few stratocumulus distant WNW-NW and distant ENE,
few cirrus distant S-W-NW
Temperature: 39F; Dew Point: 14F; Relative Humidity: 35%
Wind: WSW @ 7 kts
Sea-level pressure: 1034.7 mb; 30.55 in. Hg: rising, then falling
Visibility: 60 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 CLR 60 347/39/14/2507/055/ FEW SC DSNT WNW-N
AND DSNT ENE FEW CI DSNT S-W-NW/ 8/501 58010

1 P.M.
Weather: Thin scattered cirrus, few stratocumulus all quadrants,
few altocumulus lenticularis distant WNW-N-ENE
Temperature: 47F; Dew Point: 18F; Relative Humidity: 31%
Wind: SW @ 12G22 kts
Sea-level pressure: 1031.6 mb; 30.46 in. Hg: falling, then more rapidly
Visibility: 70 miles
6-hr Max temp: 48F
6-hr Min temp: 27F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 250 -SCT 70 316/47/18/2312G22/046/ FEW SC ALQDS
FEW ACSL DSNT WNW-N-ENE/ 8/541 58031 10048 20027

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SUMMARY FOR SATURDAY, MARCH 28, 2026

TEMPERATURE (DEGREES F)
MAX…….39 NORMAL…..48
MIN…….24 NORMAL…..31
MEAN……33 NORMAL…..39

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-6
TOTAL DEPARTURE FOR THE MONTH……………………..+118 [+4.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….32 DEPARTURE……..+6
TOTAL HEATING UNITS FOR THE MONTH (MAR)………720 DEPARTURE……-120
TOTAL HEATING UNITS FOR THE SEASON………….5262 DEPARTURE…….-10
TOTAL HEATING UNITS LAST SEASON TO DATE……..4859 DEPARTURE……+403

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)………..29 WNW @ 02:44 P.M.
VECTOR #1 (1-Sec)……….29 WNW @ 02:44 P.M.
VECTOR #2 (1-Sec)……….31 WNW @ 02:45 P.M.
DAVIS #1……………….28 WNW @ 02:44 P.M.
DAVIS #2 ………………27 NW @ 02:44 P.M.
RMY #1 (Instantaneous)…..29 WNW @ 02:44 P.M.
RMY #2 (Instantaneous)…..32 WNW @ 02:45 P.M.
MERLIN…………………29 NW
RICHARDS (C5C) (Inst)……27 NW @ 04:09 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………20 WNW @ 02:44 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..20 NW @ 02:43 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..22 WNW @ 02:45 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………21 WNW @ 02:43 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………21 NW @ 02:45 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..20 NW @ 02:43 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..21 WNW @ 02:45 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………20 NW @ 02:43 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………9.9 WNW [237 total miles] VECTOR #1………………10.3
VECTOR #2………………10.9
DAVIS #1……………….10.5 NW
DAVIS #2……………….10.2 NNW
RMY #1…………………10.1 NW
RMY #2…………………10.6 NW
RICHARDS (C5C)………….10.6

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE MONTH (MAR)……..4.96 DEPARTURE…..-0.05
TOTAL PRECIPITATION FOR THE YEAR (2026)…….11.55 DEPARTURE…..-1.96

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE…..-0.3
TOTAL SNOWFALL FOR THE MONTH (MAR)…………..2.9 DEPARTURE….-11.3
TOTAL SNOWFALL FOR THE SEASON (2025-2026)……81.6 DEPARTURE….+15.5

————————————————————–

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/+17/0.01/0.0/007/01 33 SSW VEC1 34 SSW RMY 34
3/9 67/45/56/+23/0.00/0.0/684/98 30 SSW VEC1 30 SW RMY 31
3/10 74/48/61/+27/0.00/0.0/673/96 28 SW VEC1 27 WSW RMY 28
3/11 59/39/49/+15/0.12/0.0/500/71 38 SSW VEC1 38 SSW RMY 42
3/12 57/30/44/+10/0.18/T/000/00 35 NW VEC1 34 WNW RMY 37
3/13 42/25/34/0/T/T/383/54 32 WNW VEC1 32 NW RMY 34
3/14 47/30/39/+4/0.01/0.1/606/85 54 WNW VEC1 54 WNW RMY 56
3/15 41/28/35/0/0.00/0.0/107/15 30 SE VEC1 30 SE RMY 29
3/16 60/36/48/+13/1.43/0.0/000/00 71 SSW VEC1 72 S RMY 74
3/17 59/24/42/+6/0.02/T/555/77 81 S VEC1 80 S RMY 83
3/18 35/20/28/-8/0.00/0.0/521/72 36 WNW VEC1 36 WNW RMY 37
3/19 38/23/31/-5/0.00/0.0/109/15 21 SSW VEC1 21 SSW RMY 21
3/20 54/31/43/+6/0.15/0.0/496/68 43 SSW VEC1 42 SSW RMY 45
3/21 53/35/44/+7/0.00/0.0/506/69 30 NW VEC1 32 NW RMY 31
3/22 44/33/39/+2/0.51/0.0/000/00 41 SSW VEC1 42 SSW RMY 42
3/23 37/30/34/-4/0.67/0.2/000/00 32 NNE VEC1 32 NNE RMY 32
3/24 46/29/38/0/0.01/0.2/645/87 28 SSW VEC1 28 SSW RMY 28
3/25 53/29/41/+3/0.00/0.0/655/88 32 SSW VEC1 31 SSW RMY 33
3/26 62/38/50/+11/0.13/0.0/…/.. 33 SW VEC1 33 SW RMY 34
3/27 49/29/39/0/0.00/0.0/…/.. 33 N VEC1 33 N RMY 33
3/28 39/27/33/-6/0.00/0.0/…/.. 29 WNW VEC1 29 WNW RMY 29