Friday, March 27, 2026

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

FRIDAY, MARCH 27, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0535E
SUNSET:  1804E

BREEZY NORTH WINDS AND COOLER TEMPERATURES FOLLOW OVERNIGHT RAIN….

Last night we received 0.10 inches of rain, which brings our monthly
total to 4.96 inches. This is +0.31 inches for the month but we are
still hanging on to a seasonal deficit of -1.60 inches. The rain moved
out of the area late last night, but due to the colder air and
overcast skies, this morning felt raw and chilly. Mid morning featured
a few breaks of sunshine, which have been mostly filtered by the
cirrostratus clouds. While much cooler today, we have remained dry
and mostly cloudy.

Temperatures were the warmest during the overnight hours, as a front
passed through. Behind this front is exceptionally colder temperatures,
though it’s only a few degrees below the normals for this time of year.
Comparatively though, we have dropped 20 degrees in the past 24 hours
so it feels much colder. Dew points have dropped steadily throughout
the day as a dry mass of air moves in behind the warmer, moist air we
had yesterday.

Winds have transitioned from a gusty south-southwesterly flow last
night to a gusty northerly flow for today. With that wind shift has
also seen the dramatic temperature change. The average speed for the
day so far is around 13mph. Gusts have been occasionally getting up
around 20mph, with a peak gust so far of 33mph occurring at 8:34am
this morning.

The visibility has continued to improve as colder air has made its
way to the region. We started at around 60 miles this morning at 7am
and improved to 80 miles by the early afternoon.

The maximum temperature so far today is 49F degrees, which is
2 degrees above the normal high of 47F. The minimum temperature
since midnight is 41F degrees, which is 11 degrees above the normal
low of 30F.

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Today’s Observations:

7 A.M.
Weather: Broken stratocumulus, overcast altostratus
Temperature: 43F; Dew Point: 39F; Relative Humidity: 85%
Wind: N @ 13G23 kts, peak wind N 30 mph at 6:10 A.M.
Sea-level pressure: 1010.5 mb; 29.84 in. Hg: rising, then
more rapidly
Visibility: 60 miles
6-hr Max temp: 49F
6-hr Min temp: 43F
24-hr Precip: 0.10 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 E55 BKN 75 OVC 60 105/43/39/3513G23/984/ PRESRR
PK WND 3526/10/ 8/52/ 53073 70010 10049 20043

10 A.M.
Weather: Scattered stratocumulus, scattered altocumulus,
overcast cirrostratus
Temperature: 43F; Dew Point: 31F; Relative Humidity: 62%
Wind: N @ 13G22 kts
Sea-level pressure: 1014.6 mb; 29.96 in. Hg: rising, then
more slowly
Visibility: 70 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E220 OVC 85 SCT 30 SCT 70 146/43/31/3513G22/996/
SUN DMLY VSBL/ 8/557 51041

1 P.M.
Weather: Scattered stratocumulus, broken cirrostratus, few
breaks in overcast WNW-NE
Temperature: 41F; Dew Point: 20F; Relative Humidity: 42%
Wind: SW @ 12G23 kts
Sea-level pressure: 1017.0 mb; 30.03 in. Hg: rising, then
more slowly
Visibility: 80 miles
6-hr Max temp: 44F
6-hr Min temp: 41F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 45 SCT E220 BKN 80 170/41/20/3512G23/003/
FEW BINOVC WNW-NE SUN DMLY VSBL/ 8/507 51024 10044 20041

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SUMMARY FOR THURSDAY, MARCH 26, 2026

TEMPERATURE (DEGREES F)
MAX…….62   NORMAL…..47
MIN…….38   NORMAL…..30
MEAN……50   NORMAL…..39

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………+11
TOTAL DEPARTURE FOR THE MONTH……………………..+124 [+4.6 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….15  DEPARTURE…….-11
TOTAL HEATING UNITS FOR THE MONTH (MAR)………662  DEPARTURE……-126
TOTAL HEATING UNITS FOR THE SEASON………….5204  DEPARTURE…….-16
TOTAL HEATING UNITS LAST SEASON TO DATE……..4814  DEPARTURE……+390

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)………..33 SW   @   09:14 A.M.
VECTOR #1 (1-Sec)……….33 SW   @   08:45 A.M.
VECTOR #2 (1-Sec)……….32 SW   @   08:45 A.M.
DAVIS #1……………….34 S    @   03:01 A.M.
DAVIS #2 ………………41 S    @   02:45 A.M.
RMY #1 (Instantaneous)…..34 SW   @   08:45 A.M.
RMY #2 (Instantaneous)…..32 SSW  @   09:00 A.M.
MERLIN…………………31 SW
RICHARDS (C5C) (Inst)……31 SW   @   09:14 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………24 SSW  @   03:15 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..23 SSW  @   03:15 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..23 SSW  @   03:15 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………24 S    @   03:16 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………28 S    @   02:46 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..23 SSW  @   03:15 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..24 SSW  @   03:15 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………22 SSW  @   03:15 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..14.4 SSW [346 total miles] VECTOR #1………………14.8
VECTOR #2………………15.2
DAVIS #1……………….14.5 SSW
DAVIS #2……………….15.6 SSW
RMY #1…………………14.7 SSW
RMY #2…………………15.4 SSW
RICHARDS (C5C)………….13.9

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.13 DEPARTURE…..-0.08
TOTAL PRECIPITATION FOR THE MONTH (MAR)……..4.96 DEPARTURE…..+0.31
TOTAL PRECIPITATION FOR THE YEAR (2026)…….11.55 DEPARTURE…..-1.60

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE…..-0.4
TOTAL SNOWFALL FOR THE MONTH (MAR)…………..2.9 DEPARTURE….-10.7
TOTAL SNOWFALL FOR THE SEASON (2025-2026)……81.6 DEPARTURE….+16.1

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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 The low since midnight is 41F, the daily normal low is 30F.

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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

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

RECORDS FOR MARCH 26
HIGH 76 IN 1922, 1949
LOW 6 IN 1960
PRECIP 1.99 INS. IN 1988
SNOWFALL 5.4 INS. IN 2001
PEAK GUST 63 MPH S IN 1970

RECORDS FOR MARCH 27
HIGH 78 IN 1998
LOW 12 IN 1975
PRECIP 1.05 INS. IN 1913
SNOWFALL 6.6 INS. IN 1959
PEAK GUST 62 MPH NW IN 1965, SE IN 1992

RECORDS FOR MARCH 28
HIGH 86 IN 1998
LOW 7 IN 1923
PRECIP 2.31 INS. IN 1932
SNOWFALL 5.0 INS. IN 2015
PEAK GUST 60e MPH NW IN 1944, 60 WSW IN 1991

TODAY’S REPORT PREPARED BY: Amanda Joly