Saturday, March 22, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, MARCH 22, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0543E
SUNSET: 1759E
A BEAUTIFUL SPRING DAY….
The weather is excellent today for getting outdoors, with warm temperatures,
a steady breeze, and filtered sunshine. The filtered sunshine is due to
persistent high-level cloudiness in the form of cirrostratus and thin cirrus.
Temperatures today are well above normal, with a low in the low 30s and a
high so far in the low 60s. The air is quite dry, as the dew point has
slowly risen from the low to upper 20s, with relative humidity values dropping
below 30% by the afternoon.
The wind is steady, with flow predominantly out of the west-southwest.
Speeds have slowly increased as the day has progressed. The average speed
so far is 14mph, with a peak gust to 36mph around 11:45am.
Thanks to the dry air, visibility is excellent, extending up to 70 miles
all day.
The maximum temperature for today is 60F degrees, which is 14 degrees
above the normal high of 46F. The minimum temperature since midnight is
33F degrees, which is 4 degrees above the normal low of 29F.
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Today’s Observations:
7 A.M.
Weather: Scattered cirrostratus, thin broken cirrus
Temperature: 36F; Dew Point: 20F; Relative Humidity: 51%
Wind: SW @ 12 kts
Sea-level pressure: 1008.6 mb; 29.78 in. Hg: rising, then falling
Visibility: 70 miles
6-hr Max temp: 36F
6-hr Min temp: 33F
24-hr Precip: 0.11 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 180 SCT E250 -BKN 70 086/36/20/2312/978/ 8/005 50004 70011
10036 20033
10 A.M.
Weather: Thin broken cirrus
Temperature: 51F; Dew Point: 25F; Relative Humidity: 36%
Wind: WSW @ 11G20 kts
Sea-level pressure: 1007.2 mb; 29.74 in. Hg: falling, then more rapidly
Visibility: 70 miles
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E250 -BKN 70 072/51/25/2411G20/974/ 8/001 58014
1 P.M.
Weather: Scattered cirrostratus, thin broken cirrus
Temperature: 60F; Dew Point: 27F; Relative Humidity: 28%
Wind: WSW @ 11G20 kts, peak wind WSW 35mph at 11:59 A.M.
Sea-level pressure: 1003.4 mb; 29.63 in. Hg: falling steadily
Visibility: 70 miles
6-hr Max temp: 60F
6-hr Min temp: 36F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 210 SCT E250 -BKN 70 034/60/27/2411G20/963/ PK WND 2530/59/
8/005 57038 10060 20036
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SUMMARY FOR FRIDAY, MARCH 21, 2025
TEMPERATURE (DEGREES F)
MAX…….46 NORMAL…..45
MIN…….36 NORMAL…..28
MEAN……41 NORMAL…..37
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..+4
TOTAL DEPARTURE FOR THE MONTH……………………+136 [+6.3 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….24 DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE MONTH……………515 DEPARTURE……-138
TOTAL HEATING UNITS FOR THE SEASON………….4696 DEPARTURE……-389
TOTAL HEATING UNITS LAST SEASON TO DATE……..4387 DEPARTURE……+309
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
F420C (Official)………..48 NW @ 03:33 P.M.
VECTOR #1 (1-Sec)……….49 NW @ 03:32 P.M.
VECTOR #2 (1-Sec)……….55 NW @ 02:47 P.M.
DAVIS #1……………….48 WNW @ 03:30 P.M.
DAVIS #2 ………………46 WNW @ 01:20 P.M.
RMY #1 (Instantaneous)…..54 NW @ 03:32 P.M.
RMY #2 (Instantaneous)…..53 NW @ 02:47 P.M.
MERLIN…………………45 NW
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………33 NW @ 03:33 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..33 @ 03:33 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..33 @ 04:27 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………34 NW @ 03:33 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………33 WNW @ 01:19 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..32 NW @ 03:22 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..32 NW @ 04:27 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..18.0 NW [432 total miles]
VECTOR #1………………16.9
VECTOR #2………………18.1
DAVIS #1……………….17.5 NW
DAVIS #2……………….17.5 NW
RMY #1…………………16.5 NW
RMY #2…………………17.4 WNW
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.11 DEPARTURE…..-0.08
TOTAL PRECIPITATION FOR THE MONTH…………..3.74 DEPARTURE…..+0.01
TOTAL PRECIPITATION FOR THE YEAR (2025)……..9.39 DEPARTURE…..-2.84
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……-0.4
TOTAL SNOWFALL FOR THE MONTH………………TRACE DEPARTURE…..-11.7
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……34.1 DEPARTURE…..-29.5
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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 50/21/36/+5/T/T/081/12 46 NW VEC1 46 NW RMY 49
3/2 28/14/21/-11/0.00/0.0/672/99 41 NW VEC1 42 NW RMY 43
3/3 31/8/20/-12/0.00/0.0/667/98 28 NW VEC1 28 NW RMY 31
3/4 48/23/36/+4/0.00/0.0/390/57 41 SW VEC1 42 SW RMY 43
3/5 54/41/48/+16/0.52/0.0/021/03 50 SSW VEC1 50 SSW RMY 55
3/6 55/32/44/+11/0.66/T/014/02 69 S VEC1 69 S RMY 68
3/7 41/25/33/0/T/T/638/92 60 WNW VEC1 61 WNW RMY 64
3/8 40/27/34/+1/0.00/0.0/619/89 55 W VEC1 55 W RMY 58
3/9 45/25/35/+2/0.00/0.0/544/78 40 W VEC1 39 W RMY 42
3/10 60/33/47/+13/0.00/0.0/680/97 38 WNW VEC1 38 WNW RMY 39
3/11 62/37/50/+16/0.00/0.0/676/96 39 SSW VEC1 40 SSW RMY 40
3/12 48/32/40/+6/T/T/544/77 29 N VEC1 29 N RMY 29
3/13 46/32/39/+5/0.00/0.0/483/68 25 ESE VEC1 26 ESE RMY 25
3/14 54/33/44/+9/0.00/0.0/570/80 22 SSW VEC1 22 SSW RMY 22
3/15 59/37/48/+13/0.00/0.0/358/50 28 S VEC1 28 S RMY 28
3/16 67/44/56/+21/0.05/0.0/136/19 56 SSW VEC1 58 SSW RMY 58
3/17 58/38/48/+12/2.12/0.0/000/00 60 SSW VEC1 60 SSW RMY 60
3/18 48/34/41/+5/0.00/0.0/362/50 31 NNW VEC1 31 NNW RMY 32
3/19 52/34/43/+7/0.00/0.0/662/91 18 NE VEC1 18 NE RMY 17
3/20 55/36/46/+9/0.03/0.0/…/.. 30 S VEC1 30 S RMY 30
3/21 46/36/41/+4/0.36/0.0/…/.. 48 NW VEC1 49 NW RMY 54
3/22 The low since midnight is 33F, the daily normal low is 29F.
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MARCH DAILY RECORDS TO DATE
3/16 RECORD HIGH MINIMUM TEMP OF 44F;
OLD RECORD WAS 43F IN 1921, 1973
3/17 RECORD PRECIPITATION AMOUNT OF 2.12 INS;
OLD RECORD WAS 1.97 INS IN 1968
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR MARCH 22
HIGH 81 IN 2012
LOW 3 IN 1885
PRE 3.48 INS. IN 2001
SNOW 8.7 INS. 1967
WIND 84e MPH E IN 1977
RECORDS FOR MARCH 23
HIGH 78 IN 1938
LOW 3 IN 1934
PRE 2.52 INS. IN 2010
SNOW 3.0 INS. IN 1977
WIND 78e MPH W IN 1940
TODAY’S REPORT PREPARED BY: Joshua Polen
