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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, APRIL 4, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0521E
SUNSET: 1813E
COOLING TREND CONTINUES WITH GUSTY WINDS AND
OVERCAST SKIES….
It’s been a breezy and below normal temperature kind of
day, but not in the raw, damp sense that we had earlier
in the week. This morning featured a beautiful sunrise
with some scattered low and mid level clouds and broken
cirrus and cirrostratus layers. Not much after, clouds
increased and we have remained mostly overcast with just
a few breaks of blue sky seeping through. Despite that,
and with gusty winds, the air remains relatively dry so
it hasn’t felt horrible, just a reminder that we are in
early April in New England.
Temperatures were the warmest at midnight today, and it
has gone downhill from there! We were hanging on to the
mid 50’s until the mid morning and have dipped to 42F by
1pm. Dew points started in the mid 40’s and dropped to
the mid 30’s by the early afternoon. It is a big change from
yesterday’s spring-like afternoon! The temperature
rollercoaster continues.
Winds have been busy today, with a transition from the
west-southwest to a more brisk east and east-north easterly
flow. The average speed for the day so far is around 15mph.
There have been frequent gusts in the 20-25mph for much of
the day. The peak gust so far for the day occurred just
before 11:00am this morning with a speed of 39mph.
Visibility fluctuated between 40-60 miles today, with the
best views during the mid morning hours.
The maximum temperature so far today is 55F degrees, which is
4 degrees above the normal high of 51F. The minimum temperature
since midnight is 42F degrees, which is 9 degrees above the
normal low of 33F.
————————————————————–
PRELIMINARY STATS FOR MARCH 2026
TEMPERATURE, Deg. F
Avg. Max. 49.2 [+5.1]
Avg. Min. 30.3 [+3.4]
Mean 39.8 [+4.3]
24-hour corrected mean: 39.4
Max. for month: 74F on the 10th
Min. for month: 8F on the 2nd
HEATING DEGREE DAYS
Total heating units: 776 [-139]
Total for the season: 5318 [-029]
Total for last season: 4181
COOLING DEGREE DAYS
Total cooling units: 0 [ 000]
Total for the season: 0 [ 000]
Total for last season: 0
PRECIPITATION, Inches
Total: 5.08 [-0.44]
Greatest in 24 hrs: 1.45 on the 16th-17th
SNOWFALL, Inches
Total: 2.9 [-12.1]
Greatest in 24 hrs: 1.9 on the 1st
WIND, mph
Avg. uncorrected wind speed: 12.4 mph
Avg. corrected wind speed: 12.9mph
Prevailing wind direction: South-southwest [20%]
Peak gust and direction: 81 S on the 17th
SUNSHINE:
Campbell-Stokes card minutes: 9792 of a possible 21516, or 46%
Astronomical total minutes: 10155 of a possible 22267 or 46%
————————————————————–
Today’s Observations:
7 A.M.
Weather: Scattered stratocumulus, scattered altocumulus, broken
cirrus/cirrostratus
Temperature: 55F; Dew Point: 44F; Relative Humidity: 66%
Wind: N @ 15G24 kts
Sea-level pressure: 1022.5 mb; 30.19 in. Hg: rising, then more rapidly
Visibility: 50 miles
6-hr Max temp: 58F
6-hr Min temp: 55F
24-hr Precip: 0.01 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 30 SCT 150 SCT 250 BKN 50 225/55/44/3515G24/019/ PRESRR/
8/556 53042 70001 10058 20055
10 A.M.
Weather: Overcast stratocumulus, few breaks in overcast all quadrants
Temperature: 48F; Dew Point: 40F; Relative Humidity: 72%
Wind: E @ 18G29 kts, peak wind E 33mph at 09:50 A.M.
Sea-level pressure: 1026.0 mb; 30.30 in. Hg: rising, then more rapidly
Visibility: 60 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 35 OVC 60 260/48/40/0818G29/030/ FEW BINOVC ALQDS
PK WND 0829/50/ 8/5// 53035
1 P.M.
Weather: Overcast stratocumulus, few breaks in overcast NE-ENE
Temperature: 42F; Dew Point: 35F; Relative Humidity: 76%
Wind: E @ 20G28 kts, peak wind E 32mph at 12:49 P.M.
Sea-level pressure: 1027.8 mb; 30.35 in. Hg: rising, then more slowly
Visibility: 40 miles
6-hr Max temp: 55F
6-hr Min temp: 42F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 E18 OVC 40 278/42/35/0920G28/035/ FEW BINOVC NE-ENE
PK WND 0828/49/ 8/5// 51018 10055 20042
————————————————————–
SUMMARY FOR FRIDAY, APRIL 3, 2026
TEMPERATURE (DEGREES F)
MAX…….67 NORMAL…..51
MIN…….35 NORMAL…..33
MEAN……51 NORMAL…..42
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+9
TOTAL DEPARTURE FOR THE MONTH………………………+19 [+6.1 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….14 DEPARTURE……..-9
TOTAL HEATING UNITS FOR THE MONTH (MAR)……….52 DEPARTURE…….-19
TOTAL HEATING UNITS FOR THE SEASON………….5370 DEPARTURE…….-48
TOTAL HEATING UNITS LAST SEASON TO DATE……..4998 DEPARTURE……+372
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)………..31 SW @ 10:16 P.M.
VECTOR #1 (1-Sec)……….31 SW @ 10:16 P.M.
VECTOR #2 (1-Sec)……….35 SW @ 09:51 P.M.
DAVIS #1……………….32 SW @ 09:51 P.M.
DAVIS #2 ………………35 WSW @ 09:51 P.M.
RMY #1 (Instantaneous)…..35 SW @ 10:16 P.M.
RMY #2 (Instantaneous)…..36 SW @ 09:51 P.M.
MERLIN…………………32 SW
RICHARDS (C5C) (Inst)……36 SW @ 09:51 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………24 SW @ 10:34 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..23 SW @ 09:19 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..24 SW @ 11:00 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………23 SW @ 10:25 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………23 SW @ 11:00 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..22 SW @ 10:08 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..24 SW @ 10:34 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………21 SW @ 11:01 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..11.0 SSW [265 total miles]
VECTOR #1………………11.4
VECTOR #2………………11.7
DAVIS #1……………….11.1 SSW
DAVIS #2……………….11.5 SSW
RMY #1…………………11.4 SSW
RMY #2…………………11.7 S
RICHARDS (C5C)………….10.9
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.01 DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE MONTH (APR)……..0.65 DEPARTURE…..+0.15
TOTAL PRECIPITATION FOR THE YEAR (2026)…….12.32 DEPARTURE…..-2.20
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE…..-0.2
TOTAL SNOWFALL FOR THE MONTH (APR)…………..0.0 DEPARTURE…..-0.6
TOTAL SNOWFALL FOR THE SEASON (2025-2026)……81.6 DEPARTURE….+14.1
————————————————————–
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/+11/0.13/0.0/224/30 33 SW VEC1 33 SW RMY 34
3/27 49/29/39/0/0.00/0.0/218/29 33 N VEC1 33 N RMY 33
3/28 39/27/33/-6/0.00/0.0/595/79 29 WNW VEC1 29 WNW RMY 29
3/29 50/24/37/-3/0.00/0.0/703/93 36 SW VEC1 37 SW RMY 38
3/30 65/37/51/+11/0.00/0.0/167/22 33 SW VEC1 33 SW RMY 36
3/31 65/37/51/+10/0.12/0.0/046/06 26 SW VEC1 26 NNW RMY 27
————————————————————–
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
3/17 RECORD PEAK WIND GUST OF 81 MPH,
BEATING THE OLD RECORD OF 70 MPH SET IN 1973
————————————————————–
PRELIMINARY CLIMATE SUMMARY FOR APRIL 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
4/1 73/38/56/+15/0.16/0.0/…/.. 35 NE VEC1 34 ENE RMY 35
4/2 38/34/36/-5/0.45/0.0/…/.. 31 E VEC1 31 E RMY 33
4/3 67/35/51/+9/0.04/0.0/…/.. 31 SW VEC1 31 SW RMY 35
4/4 The low since midnight is 42F, the daily normal low is 33F.
————————————————————–
APRIL DAILY RECORDS TO DATE
NONE.
————————————————————–
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR APRIL 4
HIGH 76 IN 2010
LOW 12 IN 1954
PRECIP 1.45 IN. IN 1987
SNOWFALL 7.3 IN. IN 2016
PEAK GUST 80 MPH WNW IN 1963
RECORDS FOR APRIL 5
HIGH 81 IN 1928
LOW 15 IN 1995
PRECIP 2.15 IN. IN 1987
SNOWFALL 4.0 IN. IN 1898
PEAK GUST 76 MPH WNW IN 1963
TODAY’S REPORT PREPARED BY: Amanda Joly
