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Sunday, October 11, 2026

October 11, 2026

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, OCTOBER 11, 2026 ALL TIMES ARE…

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

SUNDAY, OCTOBER 11, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0552E
SUNSET:  1709E

CLOUDY CONDITIONS, COOLER AND KIND OF GLOOMY TODAY….

There was the slightest bit of sun early this morning before
thick cloud cover rolled through. The clouds are the remnants of
hurricane Isaias and have been in the form of a thick altostratus
layer over the region. Some stratus fractus could be seen off
the coast during the mid morning hours but so far the summit and
surrounding areas have remained dry for now.

Temperatures have struggled to rise today, thanks in part to the
overcast skies. We managed to dip just below 50F during the early
morning hours and have only increased to 57F as of the last daily
observation. Dew points have hovered in the low to mid 40s for
much of today which is slightly higher than yesterday.

Winds have been on the lighter side today, with a dominant
south-south easterly flow. The average speed for the day so far
is 9mph. The peak gust for the day so far is 18mph, which occurred
just before 12:30pm this afternoon.

Visibility has ranged between 40-60 miles today. The views were
the best in the mid morning and have started to decrease more than
likely due to the incoming rain.

The maximum temperature so far today is 57F, which is 6 degrees
below the normal high of 63F. The minimum temperature since
midnight is 48F, which is 2 degrees above the normal low of 46F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Broken altocumulus, broken cirrus
Temperature: 50F; Dew Point: 41F; Relative Humidity: 71%
Wind: SSE @ 9 kts
Sea-level pressure: 1031.5 mb; 30.46 in. Hg: falling, then rising
Visibility: 40 miles
6-hr Max temp: 50F
6-hr Min temp: 48F
24-hr Precip: 0.00 inches
BHO SA 1155 E120 BKN 250 BKN 40 315/50/41/1609/046/ 8/054 55004
10050 20048

10 A.M.
Weather: Broken altostratus, overcast cirrostratus/cirrus, few
stratus fractus NE-ENE
Temperature: 54F; Dew Point: 47F; Relative Humidity: 77%
Wind: S @ 7 kts
Sea-level pressure: 1030.3 mb; 30.42 in. Hg: rising, then falling
Visibility: 60 miles
3-hr Precip: 0.00 inches
BHO SA 1455 E150 BKN 220 OVC 60 303/54/47/1707/042/ FEW STFRA NE-ENE
SUN DMLY VSBL/ 8/717 58012

1 P.M.
Weather: Overcast altostratus
Temperature: 56F; Dew Point: 45F; Relative Humidity: 65%
Wind: S @ 8 kts
Sea-level pressure: 1026.7 mb; 30.32 in. Hg: falling, then more slowly
Visibility: 50 miles
6-hr Max temp: 57F
6-hr Min temp: 50F
6-hr Precip: 0.00 inches
BHO SA 1755 E100 OVC 50 267/56/45/1708/032/ SUN DMLY VSBL 8/01/
56036 10057 20050

————————————————————–

SUMMARY FOR SATURDAY, OCTOBER 10, 2026

TEMPERATURE (DEGREES F)
MAX…….62   NORMAL…..63
MIN…….44   NORMAL…..46
MEAN……53   NORMAL…..55

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-2
TOTAL DEPARTURE FOR THE MONTH (OCT)…………………+25 [+2.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2026 THRU JUN 2027)
TOTAL HEATING UNITS FOR YESTERDAY…………….12  DEPARTURE……..+1
TOTAL HEATING UNITS FOR THE MONTH (OCT)……….70  DEPARTURE…….-21
TOTAL HEATING UNITS FOR THE SEASON…………..191  DEPARTURE…….-17
TOTAL HEATING UNITS LAST SEASON TO DATE………130  DEPARTURE…….+61

COOLING DEGREE DAYS (SEASON: JAN 2026 THRU DEC 2026)
TOTAL COOLING UNITS FOR YESTERDAY……………..0  DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH (OCT)………..9  DEPARTURE……..+4
TOTAL COOLING UNITS FOR THE SEASON…………..814  DEPARTURE……+139
TOTAL COOLING UNITS LAST SEASON TO DATE………756  DEPARTURE…….+58

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)………..22 NW   @   02:49 A.M.
VECTOR #1 (1-Sec)……….22 NW   @   02:49 A.M.
VECTOR #2 (1-Sec)……….22 W    @   12:25 A.M.
DAVIS #1……………….22 WNW  @   02:50 A.M.
DAVIS #2 ………………20 W    @   12:25 A.M.
RMY #1 (Instantaneous)…..23 NW   @   02:49 A.M.
RMY #2 (Instantaneous)…..22 WNW  @   01:50 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)……21 NW   @   02:49 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 W    @   12:51 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16 W    @   12:51 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..17 W    @   01:22 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………17 W    @   12:51 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 WNW  @   01:23 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 W    @   12:51 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..17 W    @   01:22 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………16 W    @   12:51 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..8.3 NNW [198 total miles] VECTOR #1………………8.6
VECTOR #2………………9.1
DAVIS #1……………….8.6 NW
DAVIS #2…………………M
RMY #1…………………8.6 NNW
RMY #2…………………8.9 NW
RICHARDS (C5C)………….9.0

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH (OCT)……..0.05 DEPARTURE…..-1.63
TOTAL PRECIPITATION FOR THE YEAR (2026)…….37.57 DEPARTURE…..-2.78

————————————————————–

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  74/56/65/+7/0.00/084/12             28 SW  VEC1 28 SW  RMY 27
10/2  84/63/74/+16/0.05/518/74            33 SW  VEC1 33 SW  RMY 32
10/3  68/51/60/+3/0.00/684/98             24 NNW VEC1 24 NNE RMY 24
10/4  63/49/56/-1/T/320/46                24 ESE VEC1 23 ESE RMY 22
10/5  69/46/58/+1/0.00/581/84             43 WNW VEC1 42 WNW RMY 43
10/6  60/41/51/-5/0.00/676/98             30 WNW VEC1 30 WNW RMY 31
10/7  65/40/53/-3/0.00/660/96             31 S   VEC1 31 S   RMY 31
10/8  70/53/62/+7/0.00/506/74             33 WNW VEC1 33 SSW RMY 34
10/9  66/47/57/+2/0.00/…/..             40 WNW VEC1 39 WNW RMY 40
10/10 62/44/53/-2/0.00/…/..             22 NW  VEC1 22 NW  RMY 23

10/11 The low since midnight is 48F, the daily normal low is 46F.

————————————————————–

OCTOBER DAILY RECORDS TO DATE

NONE.

————————————————————–

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

RECORDS FOR OCTOBER 11
HIGH 80F IN 1919,1949
LOW 28F IN 1993
PRECIP 1.36 INCHES IN 2019
SNOWFALL (NONE)
PEAK GUST 66e MPH WNW IN 1941

RECORDS FOR OCTOBER 12
HIGH 87F IN 1954
LOW 31F IN 1906
PRECIP 1.70 INCHES IN 1948
SNOWFALL TRACE IN 1904, 1941
PEAK GUST 55 MPH NW IN 1963

TODAY’S REPORT PREPARED BY: Amanda Joly

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Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
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