Saturday, November 1, 2025

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

SATURDAY, NOVEMBER 1, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0618E
SUNSET:  1637E

MAINLY SUNNY WEATHER RETURNS, BUT STILL WINDY WITH SEASONABLE
TEMPERATURES….

The strong low pressure that passed over the region early
yesterday continues to depart, however the tight pressure
gradient remains with gusty winds continuing the impact the
area today. On the bright side (no pun intended) the skies
have been mainly sunny today, so all in all it’s not a bad
day out there if you can stand the wind.

Temperatures are cooler than yesterday, but readings are near
seasonable levels in the mid 50s. Dew points values have been
hanging in the mid 30s for the most part today, so the air mass
is quite a bit drier than the past couple of days.

As mentioned, the wind continues to be busy with frequent gusts
of 30mph or higher. The average speed for the day so far is
around 19mph out of the west. The peak gust for the day so far
is 50mph, which occurred at 12:14am this morning.

Visibility has been quite decent, with a view generally between
60-70 miles throughout the day.

The maximum temperature so far today is 56F degrees, which is
1 degree above the normal high of 55F. The minimum temperature
since midnight is 43F degrees, which is 5 degrees above the
normal low of 38F.

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PRELIMINARY STATS FOR OCTOBER 2025

TEMPERATURE, Deg. F
Avg. Max. 62.2 [+1.2] Avg. Min. 46.2 [+2.2] Mean      54.2 [+1.7] 24-hour corrected mean: 53.6
Max. for month: 84F on the 5th
Min. for month: 34F on the 27th

HEATING DEGREE DAYS
Total heating units:    348 [-046] Total for the season:   411 [-101] Total for last season:  373

COOLING DEGREE DAYS
Total cooling units:     20 [+013] Total for the season:   756 [+079] Total for last season:  763

PRECIPITATION, Inches
Total: 6.49 [+1.00] Greatest in 24 hrs: 2.69 on the 13th-14th

SNOWFALL, Inches
Total: 0.0 [-0.7] Greatest in 24 hrs: N/A

WIND, mph
Avg. uncorrected wind speed:  11.5 mph
Avg. corrected wind speed:    11.9 mph
Prevailing wind direction:   North-Northwest [16%] Peak gust and direction:  60 W on the 31st

SUNSHINE:
Campbell-Stokes card minutes: 11826 of a possible 19824, or 60%
Astronomical total minutes: 12323 of a possible 20520 or 60%

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Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus distant all quadrants,
few cirrostratus distant NNW-E, few cirrus distant NNW-E
Temperature: 44F; Dew Point: 35F; Relative Humidity: 69%
Wind: W @ 14G22 kts, peak wind W 30mph at 6:10 A.M.
Sea-level pressure: 1005.4 mb; 29.69 in. Hg: rising rapidly
Visibility: 60 miles
6-hr Max temp: 45F
6-hr Min temp: 43F
24-hr Precip: Trace
BHO SA 1155 CLR 60 054/44/35/2814G22/969/ FEW SC DSNT ALQDS
FEW CS DSNT NNW-E FEW CI DSNT NNW-E PRESRR PK WND 2826/10/
8/508 53050 70000 10045 20043

10 A.M.
Weather: Scattered cirrus, few stratocumulus distant S-SSW
and distant WSW-NW-NE
Temperature: 51F; Dew Point: 33F; Relative Humidity: 51%
Wind: W @ 19G29 kts, peak wind W 39mph at 9:07 A.M.
Sea-level pressure: 1007.4 mb; 29.75 in. Hg: rising, then more slowly
Visibility: 70 miles
3-hr Precip: 0.00 inches
BHO SA 1455 250 SCT 70 074/51/33/2819G29/975/ FEW SC DSNT S-SSW
AND DSNT WSW-NW-NE PK WND 2834/07/ 8/504 51020

1 P.M.
Weather: Clear, few stratocumulus distant SW-NW-NNE, few cirrus
distant ESE-S-W
Temperature: 55F Dew Point: 34F; Relative Humidity: 44%
Wind: W @ 11G22 kts, peak wind W 33mph at 12:02 P.M.
Sea-level pressure: 1008.7 mb; 29.79 in. Hg: rising, then more rapidly
Visibility: 70 miles
6-hr Max temp: 56F
6-hr Min temp: 44F
6-hr Precip: 0.00 inches
BHO SA 1755 CLR 70 087/55/34/2811G22/979/ FEW SC DSNT SW-NW-NNE
FEW CI DSNT ESE-S-W PK WND 2829/02/ 8/501 53013 10056 20044

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SUMMARY FOR FRIDAY, OCTOBER 31, 2025

TEMPERATURE (DEGREES F)
MAX…….58   NORMAL…..56
MIN…….47   NORMAL…..39
MEAN……53   NORMAL…..47

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+6
TOTAL DEPARTURE FOR THE MONTH………………………+58 [+1.7 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….12  DEPARTURE……..-6
TOTAL HEATING UNITS FOR THE MONTH……………348  DEPARTURE…….-46
TOTAL HEATING UNITS FOR THE SEASON…………..311  DEPARTURE……-101
TOTAL HEATING UNITS LAST SEASON TO DATE………373  DEPARTURE…….+38

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)………..60 W    @   09:52 P.M.
VECTOR #1 (1-Sec)……….58 W    @   11:20 P.M.
VECTOR #2 (1-Sec)……….62 W    @   10:58 P.M.
DAVIS #1……………….59 W    @   09:52 P.M.
DAVIS #2 ………………54 WNW  @   10:58 P.M.
RMY #1 (Instantaneous)…..63 W    @   11:20 P.M.
RMY #2 (Instantaneous)…..63 W    @   10:58 P.M.
MERLIN…………………58 W
RICHARDS (C5C) (Inst)……62 W    @   10:58 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………41 W    @   11:00 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..41 W    @   10:59 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..38 W    @   10:58 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………45 W    @   10:59 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………40 WNW  @   10:59 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..39 W    @   10:59 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..37 W    @   10:58 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………40 W    @   10:59 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..20.8 WSW [500 total miles] VECTOR #1………………19.9
VECTOR #2………………20.7
DAVIS #1……………….20.9 WSW
DAVIS #2………………….M
RMY #1…………………19.3 WSW
RMY #2…………………20.1 WSW
RICHARDS (C5C)………….19.2

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE MONTH…………..6.49 DEPARTURE…..+1.00
TOTAL PRECIPITATION FOR THE YEAR (2025)…….42.31 DEPARTURE…..-1.85

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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/-3/0.00/682/97            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 57/46/52/+4/0.79/000/00            43 E   VEC1 43 E   RMY 46
10/31 58/47/53/+6/0.05/155/25            60 W   VEC1 58 W   RMY 63

11/1 The low since midnight is 43F, the daily normal low is 38F.

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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 NOVEMBER 1
HIGH 77 IN 2024
LOW 22 IN 1913,1923
PRECIP 2.37 INCHES IN 1988
SNOWFALL TRACE IN 1906,1951,2023
PEAK GUST 78 ESE IN 1997

RECORDS FOR NOVEMBER 2
HIGH 81 IN 1950
LOW 22 IN 1965
PRECIP 1.67 INCHES IN 1970
SNOWFALL 1.8 IN 2014
PEAK GUST 63 WSW IN 1973

TODAY’S REPORT PREPARED BY: Matt Douglas