Tuesday, October 28, 2025

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

TUESDAY, OCTOBER 28, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0613E
SUNSET:  1642E

MAINLY CLOUDY AND COOL WITH A BRISK ONSHORE WIND….

Skies have been mainly cloudy today with a few breaks of sun
poking through at times. It has been a chilly day, especially
due to the lack of sunshine and a freshening flow out of the
northeast.

As mentioned, temperatures have not risen a ton today. The
morning low was in the mid to upper 30s, and we’ve only manage
to recover to the upper 40s through early this afternoon. Dew
point values have generally be in the upper 30s to low 40s for
the day.

A northerly wind veered to more northeasterly by the mid morning
hours. It has also freshened a bit as we moved into the late
morning and early afternoon hours. The average speed for the day
so far is around 12mph. Gusts increased in frequency and speed by
late this morning with a peak gust for the day so far of 30mph,
which occurred just after 10:30am this morning.

Visibility has been very good today, starting the day at around
80 miles, but dropping a bit to around 60 miles for the balance
of the day through early this afternoon.

The maximum temperature so far today is 49F degrees, which is
8 degrees below the normal high of 57F. The minimum temperature
since midnight is 37F degrees, which is 3 degrees below the
normal low of 40F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Overcast stratocumulus, breaks in overcast distant SW-W-NNE,
virga distant NE-SE
Temperature: 43F; Dew Point: 37F; Relative Humidity: 80%
Wind: N @ 10G18 kts
Sea-level pressure: 1028.9 mb; 30.38 in. Hg: rising, then steady
Visibility: 80 miles
6-hr Max temp: 43F
6-hr Min temp: 37F
24-hr Precip: 0.00 inches
BHO SA 1155 E22 OVC 80 289/43/37/0110G18/038/ BINOVC DSNT SW-W-NNE
VIRGA DSNT NE-SE/ 8/5// 51004 10043 20037

10 A.M.
Weather: Broken stratocumulus, broken cirrus
Temperature: 47F; Dew Point: 40F; Relative Humidity: 78%
Wind: NE @ 10G17 kts
Sea-level pressure: 1029.4 mb; 30.40 in. Hg: rising, then steady
Visibility: 60 miles
3-hr Precip: 0.00 inches
BHO SA 1455 E24 BKN 250 BKN 60 294/47/40/0510G17/040/ 8/501 51005

1 P.M.
Weather: Broken stratocumulus, broken cirrus
Temperature: 48F Dew Point: 40F; Relative Humidity: 73%
Wind: NE @ 12G20 kts
Sea-level pressure: 1027.7 mb; 30.35 in. Hg: falling, then more slowly
Visibility: 60 miles
6-hr Max temp: 49F
6-hr Min temp: 43F
6-hr Precip: 0.00 inches
BHO SA 1755 E26 BKN 250 BKN 60 277/48/40/0412G20/035/ 8/501 56017
10049 20043

————————————————————–

SUMMARY FOR MONDAY, OCTOBER 27, 2025

TEMPERATURE (DEGREES F)
MAX…….51   NORMAL…..57
MIN…….34   NORMAL…..40
MEAN……43   NORMAL…..49

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-6
TOTAL DEPARTURE FOR THE MONTH………………………+55 [+1.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….22  DEPARTURE……..+5
TOTAL HEATING UNITS FOR THE MONTH……………282  DEPARTURE…….-43
TOTAL HEATING UNITS FOR THE SEASON…………..345  DEPARTURE…….-97
TOTAL HEATING UNITS LAST SEASON TO DATE………326  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)………..18 NNE  @   09:32 A.M.
VECTOR #1 (1-Sec)……….19 NNW  @   03:56 A.M.
VECTOR #2 (1-Sec)……….20 N    @   09:23 A.M.
DAVIS #1……………….17 NNW  @   03:56 A.M.
DAVIS #2 ………………17 N    @   04:04 A.M.
RMY #1 (Instantaneous)…..19 NNW  @   03:56 A.M.
RMY #2 (Instantaneous)…..20 N    @   09:23 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)……18 NNW  @   03:56 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………13 NNW  @   03:15 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..14 NNW  @   04:15 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..14 NNW  @   04:14 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………14 NNW  @   04:15 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………14 N    @   04:24 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 NNW  @   04:15 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..14 NNW  @   04:15 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………14 NW   @   03:58 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………6.0 NNW [144 total miles] VECTOR #1……………….7.8
VECTOR #2……………….8.2
DAVIS #1………………..7.7 N
DAVIS #2………………….M
RMY #1………………….7.7 N
RMY #2………………….8.1 N
RICHARDS (C5C)…………..8.3

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE MONTH…………..5.53 DEPARTURE…..+0.76
TOTAL PRECIPITATION FOR THE YEAR (2025)…….41.35 DEPARTURE…..-2.09

————————————————————–

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/…/..            29 WSW VEC1 29 WSW RMY 29
10/24 58/41/50/0/0.00/…/..             20 WNW VEC1 20 WNW RMY 19
10/25 55/38/47/-2/0.00/…/..            23 NW  VEC1 23 NNW RMY 23
10/26 56/37/47/-2/0.00/…/..            23 WNW VEC1 23 WNW RMY 24
10/27 51/34/43/-6/0.00/…/..            18 NNE VEC1 19 NNW RMY 19

10/28 The low since midnight is 37F, the daily normal low is 40F.

————————————————————–

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

————————————————————–

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

RECORDS FOR OCTOBER 28
HIGH 81F IN 1919
LOW 23F IN 1914
PRECIP 2.46 INCHES IN 2006
SNOWFALL TRACE IN 1891,1934,1957,1979
PEAK GUST 71 MPH SSW IN 1995

RECORDS FOR OCTOBER 29
HIGH 74F IN 1989
LOW 23F IN 1891
PRECIP 2.42 INCHES IN 2012
SNOWFALL 4.0 INCHES IN 2011
PEAK GUST 76 E IN 2012

TODAY’S REPORT PREPARED BY: Matt Douglas