Thursday, October 30, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, OCTOBER 30, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0615E
SUNSET: 1640E
ANOTHER DREARY DAY WITH DRIZZLE, FOG, AND ONSHORE FLOW….
Today has featured overcast skies with non-stop mainly light
drizzle since yesterday. With a raw easterly wind and cool
temperatures, it’s definitely a great day to be indoors with
a hot beverage or soup. Between the drizzle yesterday and today,
so far we’ve gotten a total of 0.22″ through 1pm today.
Temperatures have finally risen out of the 40s for the first
time since Monday afternoon. Readings so far have reached the
low 50s. The dew point is moving in tandem with the temperature,
as such the air is fully saturated today.
The wind has been fairly steady to this point out of mainly an
easterly direction. The average speed for the day so far is
around 11mph. The peak gust for the day so far is 30mph, which
occurred just during the 1pm observation.
Visibility has of course been limited all day. So far the max
visibility today has been around 4 miles, but most of the time
it’s been 1-2 miles or less.
The maximum temperature so far today is 52F degrees, which is
4 degrees below the normal high of 56F. The minimum temperature
since midnight is 46F degrees, which is 7 degrees above the
normal low of 39F.
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Today’s Observations:
7 A.M.
Weather: Sky obscured, vertical visibility 300ft, light drizzle
Temperature: 49F; Dew Point: 49F; Relative Humidity: 100%
Wind: E @ 10G17 kts
Sea-level pressure: 1018.9 mb; 30.09 in. Hg: falling, then rising
Visibility: 1 mile, fog
6-hr Max temp: 49F
6-hr Min temp: 46F
24-hr Precip: 0.18 inches
BHO SA 1155 X W3 1L-F 189/49/49/0910G17/009/ 8//// 55007 6006/
70018 10049 20046
10 A.M.
Weather: Broken stratus fractus, overcast nimbostratus, very light
drizzle
Temperature: 51F; Dew Point: 51F; Relative Humidity: 100%
Wind: E @ 9G17 kts
Sea-level pressure: 1017.5 mb; 30.05 in. Hg: falling unsteadily
Visibility: 2 miles, fog
3-hr Precip: 0.03 inches
BHO SA 1455 E3 BKN 20 OVC 2L-F 175/51/51/1009G17/005/
STFRA OCNLY DRFTG OVR SMT PCPN VRY LGT/ 8/7// 57014 6003/
1 P.M.
Weather: Broken stratus fractus, overcast nimbostratus, very light
drizzle
Temperature: 52F Dew Point: 52F; Relative Humidity: 100%
Wind: E @ 16G26 kts, peak wind E 30mph at 12:49 P.M.
Sea-level pressure: 1012.2 mb; 29.89 in. Hg: falling, then more rapidly
Visibility: 4 miles, fog
6-hr Max temp: 52F
6-hr Min temp: 49F
6-hr Precip: 0.04 inches
BHO SA 1755 E2 BKN 10 OVC 4L-F 122/52/52/1016G26/989/
PCPN VRY LGT PK WND 0926/49/ 8/72/ 58053 6004/ 10052 20049
————————————————————–
SUMMARY FOR WEDNESDAY, OCTOBER 29, 2025
TEMPERATURE (DEGREES F)
MAX…….48 NORMAL…..56
MIN…….44 NORMAL…..39
MEAN……46 NORMAL…..48
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-2
TOTAL DEPARTURE FOR THE MONTH………………………+48 [+1.5 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….19 DEPARTURE……..+2
TOTAL HEATING UNITS FOR THE MONTH……………323 DEPARTURE…….-36
TOTAL HEATING UNITS FOR THE SEASON…………..386 DEPARTURE…….-90
TOTAL HEATING UNITS LAST SEASON TO DATE………367 DEPARTURE…….+19
COOLING DEGREE DAYS (SEASON JAN 2025 THRU DEC 2025)
TOTAL COOLING UNITS FOR YESTERDAY……………..0 DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH…………….20 DEPARTURE…….+13
TOTAL COOLING UNITS FOR THE SEASON…………..756 DEPARTURE…….+79
TOTAL COOLING UNITS LAST SEASON TO DATE………761 DEPARTURE……..-5
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)………..32 NE @ 02:45 A.M.
VECTOR #1 (1-Sec)……….33 NE @ 02:45 A.M.
VECTOR #2 (1-Sec)……….35 NE @ 02:52 A.M.
DAVIS #1……………….33 ENE @ 01:20 A.M.
DAVIS #2 ………………33 NE @ 02:52 A.M.
RMY #1 (Instantaneous)…..33 NE @ 01:21 A.M.
RMY #2 (Instantaneous)…..37 NE @ 01:20 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)……32 NE @ 04:28 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………22 NE @ 12:00 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..22 NE @ 12:00 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..22 NE @ 12:00 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………23 NE @ 12:00 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………23 ENE @ 12:01 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..21 NE @ 12:00 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..22 NE @ 12:00 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………21 NE @ 12:00 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………9.1 NNE [218 total miles]
VECTOR #1……………….9.9
VECTOR #2………………10.3
DAVIS #1……………….10.0 NE
DAVIS #2………………….M
RMY #1………………….9.6 NNE
RMY #2………………….9.9 NNE
RICHARDS (C5C)………….10.1
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.18 DEPARTURE……0.00
TOTAL PRECIPITATION FOR THE MONTH…………..5.71 DEPARTURE…..+0.57
TOTAL PRECIPITATION FOR THE YEAR (2025)…….41.53 DEPARTURE…..-2.28
————————————————————–
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/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
10/1 61/49/55/-3/0.00/668/97 30 NE VEC1 30 NE RMY 30
10/2 60/43/52/-6/0.00/637/91 28 NE VEC1 28 NE RMY 28
10/3 72/46/59/+2/0.00/670/96 23 SW VEC1 23 SW RMY 23
10/4 81/53/67/+10/0.00/667/96 18 NNW VEC1 18 NW RMY 19
10/5 84/62/73/+16/0.00/664/96 18 SSW VEC1 18 SSW RMY 18
10/6 83/59/71/+15/0.00/649/94 25 SSW VEC1 25 SSW RMY 26
10/7 79/59/69/+13/0.00/440/64 35 SSW VEC1 35 SSW RMY 36
10/8 68/49/59/+4/0.80/027/04 33 NW VEC1 34 SSW RMY 35 TSTM
10/9 55/40/48/-7/0.00/667/98 33 NNW VEC1 35 NNW RMY 35
10/10 61/38/50/-5/0.00/664/98 25 SSW VEC1 26 S RMY 26
10/11 66/49/58/+4/0.00/243/36 21 SW VEC1 21 SW RMY 20
10/12 56/52/54/0/0.91/000/00 50 ENE VEC1 50 ENE RMY 52
10/13 53/50/52/-2/2.14/000/00 51 ENE VEC1 51 ENE RMY 51
10/14 53/50/52/-1/0.49/000/00 36 NE VEC1 36 NNE RMY 35
10/15 62/44/53/0/T/319/48 33 NNW VEC1 33 NNW RMY 35
10/16 53/39/46/-6/0.00/410/62 35 NW VEC1 35 NW RMY 36
10/17 61/41/51/-1/0.00/652/99 26 N VEC1 26 N RMY 27
10/18 63/40/52/0/0.00/604/92 17 SSE VEC1 16 NNW RMY 17
10/19 68/50/59/+8/0.00/568/87 28 SSE VEC1 29 SSE RMY 28
10/20 64/51/58/+7/0.75/072/11 40 SSE VEC1 40 SSE RMY 41
10/21 65/47/56/+5/0.00/648/100 28 WSW VEC1 28 WSW RMY 29
10/22 67/51/59/+9/0.44/387/60 32 SW VEC1 33 SW RMY 33
10/23 61/45/53/+3/0.00/462/72 29 WSW VEC1 29 WSW RMY 29
10/24 58/41/50/0/0.00/403/63 20 WNW VEC1 20 WNW RMY 19
10/25 55/38/47/-2/0.00/491/77 23 NW VEC1 23 NNW RMY 23
10/26 56/37/47/-2/0.00/635/100 23 WNW VEC1 23 WNW RMY 24
10/27 51/34/43/-6/0.00/341/54 18 NNE VEC1 19 NNW RMY 19
10/28 49/37/43/-5/T/075/12 35 NE VEC1 35 NE RMY 37
10/29 48/44/46/-2/0.12/000/00 32 NE VEC1 33 NE RMY 33
10/30 The low since midnight is 46F, the daily normal low is 39F.
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OCTOBER DAILY RECORDS TO DATE
10/5 HIGH MINIMUM TEMPERATURE OF 62F,
TIED THE RECORD FOR THE DATE WITH 1910
10/6 HIGH MAXIMUM TEMPERATURE OF 83F,
TIED THE RECORD FOR THE DATE WITH 1990 AND 2007
10/13 PEAK GUST OF 51 MPH ENE,
BEAT THE OLD RECORD OF 46e MPH W IN 1950
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR OCTOBER 30
HIGH 75F IN 1946,1989
LOW 21F IN 1928
PRECIP 1.85 INCHES IN 1917
SNOWFALL 6.5 INCHES IN 2020
PEAK GUST 73 SE IN 2017
RECORDS FOR OCTOBER 31
HIGH 79F IN 1946
LOW 22F IN 1904
PRECIP 3.74 INCHES IN 1991
SNOWFALL TRACE IN 1906
PEAK GUST 70e S IN 1945
TODAY’S REPORT PREPARED BY: Matt Douglas
