Sunday, April 26, 2026

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

SUNDAY, APRIL 26, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0446E
SUNSET: 1838E

COOL TEMPS, MOSTLY CLOUDY SKIES WITH LIGHT EASTERLY WINDS….

There was a very brief peek of sunshine at day break today before
mid and upper level clouds took over the sky. Skies remained mostly
cloudy throughout the morning with decreasing clouds by the early
afternoon. By 1pm we were finally seeing a bit of sun.

Temperatures dipped to 41F during the early morning which is
seasonable for this time of year. Due to the cool air mass and
lack of sunshine, we have remained below normal for another day,
though it’s been pleasant outside with light winds and a comfortable
dew point range. Dew points have hovered in the low to mid 30s
throughout the day.

Winds were light during the overnight and there was a period of
calm winds for about 3 hours early this morning. Since then, winds
have slowly increased, but have remained light and mostly out of
the east-northeast and northeast. The average speed for the day so
far is only around 4mph. The peak gust for the day so far is 15mph,
which occurred around 12:39pm this afternoon.

It has been another great day of visibility, with views between
70-80 miles.

The maximum temperature so far today is 55F degrees, which is 6
degrees below the normal high of 61F. The minimum temperature since
midnight is 41F degrees, which is 1 degree below the normal low
of 42F.

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Today’s Observations:

7 A.M.
Weather: Broken altocumulus, broken cirrostratus
Temperature: 44F; Dew Point: 36F; Relative Humidity: 74%
Wind: Calm
Sea-level pressure: 1020.0 mb; 30.12 in. Hg: rising, then more rapidly
Visibility: 70 miles
6-hr Max temp: 44F
6-hr Min temp: 41F
24-hr Precip: 0.00 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 E120 BKN 220 BKN 70 200/44/36/0000/012/ SUN DMLY VSBL
WND CALM/ 8/077 53013 10044 20041

10 A.M.
Weather: Broken altocumulus, broken cirrostratus
Temperature: 51F; Dew Point: 32F; Relative Humidity: 48%
Wind: ESE @ 2 kts, wind light
Sea-level pressure: 1021.2 mb; 30.16 in. Hg: rising, then more slowly
Visibility: 80 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E120 BKN 220 BKN 80 212/51/32/1102/016/ WND LGT/ 8/056 51012

1 P.M.
Weather: Broken altocumulus, broken cirrus, few stratocumulus SW-WNW-N
Temperature: 54F; Dew Point: 32F; Relative Humidity: 42%
Wind: NE @ 6 kts, wind light
Sea-level pressure: 1021.2 mb; 30.16 in. Hg: steady, then falling
Visibility: 70 miles
6-hr Max temp: 55F
6-hr Min temp: 44F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 E110 BKN 250 BKN 70 212/54/32/0406/016/ FEW SC SW-WNW-N
WND LGT/ 8/551 50000 10055 20044
————————————————————–

SUMMARY FOR SATURDAY, APRIL 25, 2026

TEMPERATURE (DEGREES F)
MAX…….51 NORMAL…..61
MIN…….36 NORMAL…..42
MEAN……44 NORMAL…..51

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-7
TOTAL DEPARTURE FOR THE MONTH………………………+37 [+1.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….21 DEPARTURE……..+7
TOTAL HEATING UNITS FOR THE MONTH (MAR)………441 DEPARTURE…….-34
TOTAL HEATING UNITS FOR THE SEASON………….5759 DEPARTURE…….-63
TOTAL HEATING UNITS LAST SEASON TO DATE……..5362 DEPARTURE……+397

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)………..18 NE @ 09:19 A.M.
VECTOR #1 (1-Sec)……….18 NE @ 09:19 A.M.
VECTOR #2 (1-Sec)……….19 ENE @ 09:10 A.M.
DAVIS #1……………….18 E @ 09:10 A.M.
DAVIS #2 ………………18 E @ 09:10 A.M.
RMY #1 (Instantaneous)…..19 E @ 09:10 A.M.
RMY #2 (Instantaneous)…..19 ENE @ 09:10 A.M.
MERLIN…………………17 E
RICHARDS (C5C) (Inst)……17 E @ 09:10 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………13 NE @ 09:20 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..13 NE @ 09:20 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..12 NNE @ 09:02 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………13 ENE @ 08:41 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………12 NE @ 09:02 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..12 ENE @ 08:41 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..12 NNE @ 09:02 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………12 NNE @ 09:20 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………7.1 ESE [170 total miles] VECTOR #1……………….7.9
VECTOR #2……………….8.3
DAVIS #1………………..8.1 ENE
DAVIS #2………………..8.2 ENE
RMY #1………………….7.9 ENE
RMY #2………………….8.2 NE
RICHARDS (C5C)…………..8.5

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.14
TOTAL PRECIPITATION FOR THE MONTH (APR)……..1.79 DEPARTURE…..-2.25
TOTAL PRECIPITATION FOR THE YEAR (2026)…….13.46 DEPARTURE…..-4.60

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……0.0
TOTAL SNOWFALL FOR THE MONTH (APR)…………TRACE DEPARTURE…..-2.7
TOTAL SNOWFALL FOR THE SEASON (2025-2026)……81.6 DEPARTURE….+12.0

————————————————————–

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/+15/0.16/0.0/061/08 35 NE VEC1 34 ENE RMY 35
4/2 38/34/36/-5/0.45/0.0/000/00 31 E VEC1 31 E RMY 33
4/3 67/35/51/+9/0.04/0.0/270/35 31 SW VEC1 31 SW RMY 35
4/4 58/35/47/+5/0.01/0.0/093/12 39 ENE VEC1 38 ENE RMY 42
4/5 55/36/46/+3/0.16/0.0/008/01 35 NW VEC1 36 NW RMY 38
4/6 50/32/41/-2/0.00/0.0/708/91 46 WNW VEC1 46 WNW RMY 47
4/7 50/29/40/-4/0.10/T/336/43 39 WNW VEC1 39 WNW RMY 41
4/8 43/25/34/-10/0.00/0.0/753/96 30 NNW VEC1 31 NNW RMY 32
4/9 56/30/43/-1/0.00/0.0/755/96 35 S VEC1 35 SSW RMY 35
4/10 67/33/50/+5/0.00/0.0/672/85 37 S VEC1 36 SSW RMY 37
4/11 60/41/51/+6/0.00/0.0/690/87 37 NW VEC1 37 NW RMY 37
4/12 54/35/45/-1/0.02/0.0/549/69 28 S VEC1 28 S RMY 28
4/13 69/41/55/+9/T/0.0/168/21 40 SSW VEC1 41 SSW RMY 42
4/14 83/58/71/+24/0.15/0.0/617/77 46 SSW VEC1 46 SSW RMY 47
4/15 77/44/61/+14/T/0.0/626/78 25 NE VEC1 25 NE RMY 24
4/16 69/45/57/+10/0.37/0.0/347/43 45 NW VEC1 44 NW RMY 50 TSTM
4/17 62/47/55/+7/0.14/0.0/145/18 31 NE VEC1 32 NNW RMY 31
4/18 48/41/45/-3/0.04/0.0/008/01 28 ENE VEC1 26 E RMY 27
4/19 49/34/42/-7/0.14/T/000/00 40 NW VEC1 39 NW RMY 42 TSTM
4/20 50/31/41/-8/T/T/596/73 31 W VEC1 30 W RMY 32
4/21 50/31/41/-9/0.00/0.0/812/99 28 S VEC1 29 S RMY 28
4/22 44/34/39/-11/T/0.0/000/00 31 SSW VEC1 31 SSW RMY 32
4/23 65/40/53/+3/0.00/0.0/…/.. 43 NW VEC1 43 NW RMY 49
4/24 56/35/46/-5/0.00/0.0/…/.. 23 NNW VEC1 24 NNW RMY 23
4/25 51/36/44/-7/0.00/0.0/…/.. 18 NE VEC1 18 NE RMY 19