Tuesday, March 25, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, MARCH 25, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0538E
SUNSET: 1802E
DRIER AND MILDER TODAY FOLLOWING YESTERDAY’S RAINFALL….
The total rainfall from yesterday’s weather system was 0.79″. This
brings the monthly total over 4.50″, which for now is a bit above
normal. But we’re still holding on to a deficit for the year so far
of just over 2.60″.
Things have dried out today with partial sunshine, milder
temperatures, and a brisk southwesterly wind.
Temperatures have reached the low to mid 50s early this afternoon
after starting the day in the mid 30s. These readings are a bit
above normal for today’s date, and with the higher sun angle, it
feels nice out there when the wind drops off a bit. Dew point
values have been dropping off with the atmosphere mixing drier air
from aloft early this afternoon. Values reached 40 for a time this
morning, but have since dropped to the upper 20s.
Winds died down for a time this morning, but have increased again
into early this afternoon thanks to the above mentioned mixing.
The average speed for the day so far is around 10mph. Gusts have
been exceeding the 30mph mark early this afternoon. The peak gust
so far is 33mph, occurring just after 11:30am.
Visibility has been gradually improving since early this morning.
We went from seeing only around 20 miles early this morning to
around 50 miles by early this afternoon.
The maximum temperature for today is 53F degrees, which is 6 degrees
above the normal high of 47F. The minimum temperature since midnight
is 33F degrees, which is 3 degrees above the normal low of 30F.
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Today’s Observations:
7 A.M.
Weather: Broken cirrostratus, broken cirrus, few stratus fractus NE-SE,
few stratocumulus distant W-WNW, few altocumulus/castellanus distant W-N
and distant NE-ESE
Temperature: 38F; Dew Point: 38F; Relative Humidity: 99%
Wind: SW @ 6 kts, wind light
Sea-level pressure: 1011.0 mb; 29.86 in. Hg: rising, then more rapidly
Visibility: 20 miles, thin fog
6-hr Max temp: 38F
6-hr Min temp: 33F
24-hr Precip: 0.79 inches
24-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1155 E220 BKN 250 BKN 20 110/38/38/2306/986/ FEW STFRA NE-SE
FEW SC DSNT W-WNW FEW AC/ACC DSNT W-N AND DSNT NE-ESE THN F ALQDS
WND LGT/ 8/787 53012 70079 10038 20033
10 A.M.
Weather: Broken cumulus, broken cirrus
Temperature: 48F; Dew Point: 31F; Relative Humidity: 51%
Wind: WSW @ 11G22 kts
Sea-level pressure: 1010.8 mb; 29.85 in. Hg: rising, then falling
Visibility: 40 miles, hazy
3-hr Precip: 0.00 inches
3-hr Snowfall: 0.0 inches
BHO SA 1455 E44 BKN 250 BKN 40 108/48/31/2511G22/985/ HAZY
PK WND 2727/27/ 8/201 58002
1 P.M.
Weather: Broken cumulus
Temperature: 51F; Dew Point: 28F; Relative Humidity: 40%
Wind: W @ 9G19 kts
Sea-level pressure: 1009.4 mb; 29.81 in. Hg: falling, then more rapidly
Visibility: 50 miles
6-hr Max temp: 53F
6-hr Min temp: 38F
6-hr Precip: 0.00 inches
6-hr Snowfall: 0.0 inches
Snow Depth: 0 inches
BHO SA 1755 E65 BKN 50 094/51/28/2709G19/981/ 8/200 58014 10053 20038
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SUMMARY FOR MONDAY, MARCH 24, 2025
TEMPERATURE (DEGREES F)
MAX…….43 NORMAL…..47
MIN…….31 NORMAL…..29
MEAN……37 NORMAL…..38
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………..-1
TOTAL DEPARTURE FOR THE MONTH……………………+143 [+5.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY…………….28 DEPARTURE……..+1
TOTAL HEATING UNITS FOR THE MONTH……………590 DEPARTURE……-145
TOTAL HEATING UNITS FOR THE SEASON………….4771 DEPARTURE……-396
TOTAL HEATING UNITS LAST SEASON TO DATE……..4482 DEPARTURE……+289
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)………..35 S @ 09:46 A.M.
VECTOR #1 (1-Sec)……….35 S @ 09:46 A.M.
VECTOR #2 (1-Sec)……….34 S @ 08:54 A.M.
DAVIS #1……………….35 S @ 08:54 A.M.
DAVIS #2 ………………44 S @ 08:47 A.M.
RMY #1 (Instantaneous)…..36 S @ 09:45 A.M.
RMY #2 (Instantaneous)…..37 S @ 08:54 A.M.
MERLIN…………………33 S
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………25 S @ 09:46 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..25 @ 09:47 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..26 @ 09:47 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………23 S @ 09:47 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………30 S @ 08:53 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..24 S @ 09:47 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..26 S @ 09:47 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..11.1 SSE [267 total miles]
VECTOR #1………………11.3
VECTOR #2………………12.1
DAVIS #1……………….11.1 SSE
DAVIS #2……………….11.5 SSE
RMY #1…………………11.0 SSE
RMY #2…………………12.1 SSE
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.79 DEPARTURE…..+0.61
TOTAL PRECIPITATION FOR THE MONTH…………..4.53 DEPARTURE…..+0.24
TOTAL PRECIPITATION FOR THE YEAR (2025)…….10.18 DEPARTURE…..-2.61
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…..-12.9
TOTAL SNOWFALL FOR THE SEASON (2024-2025)……34.1 DEPARTURE…..-30.7
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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 62/33/48/+11/T/0.0/…/.. 53 WNW VEC1 52 WNW RMY 58
3/23 44/25/35/-3/0.00/0.0/…/.. 39 WNW VEC1 39 NW RMY 40
3/24 43/31/37/-1/0.79/0.0/…/.. 35 S VEC1 35 S RMY 36
3/25 The low since midnight is 33F, the daily normal low is 30F.
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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 25
HIGH 76 IN 1910
LOW 8 IN 1888, 1956
PRECIP 1.84 INS. IN 1909
SNOWFALL 1.8 INS. IN 2018
PEAK GUST 69 MPH SE IN 1969
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
TODAY’S REPORT PREPARED BY: Matt Douglas/Andrew Sullivan
