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Thursday, October 15, 2026

October 15, 2026

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA THURSDAY, OCTOBER 15, 2026 ALL TIMES ARE…

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

THURSDAY, OCTOBER 15, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0557E
SUNSET:  1702E

A PLEASANT DAY WITH PLENTY OF SUNSHINE AND SEASONAL TEMPERATURES….

Today we return to the feel of fall as the one day summery
weather has pushed well offshore following yesterday’s cold
frontal passage. Skies have been mainly clear today with only
a few clouds around. A much more refreshing air mass has taken
over with seasonable temperatures, much lower humidity, and
excellent visibility.

Temperatures dipped to the upper 40s early this morning before
rebounding to the low 60s by early this afternoon. This is
pretty much where we should be at this time of year. Dew point
values, which were in the mid 60s yesterday, have dropped from
the low to mid 40s early this morning to the upper 30s early
this afternoon. This is definitely much more pleasant air!

Winds were gusty from around 1am to 9am this morning when cold
air advection was taking place. Speeds have since diminished
into early this afternoon. It’s been out of the north-northwest
all day with an average speed for the day so far of around 13mph,
however it’s been closer to 6-7mph the last couple of hours.
The peak gust for the day so far is 33mph, which occurred just
before 3am this morning.

Visibility has been excellent all day with a splendid view of
around 70 miles.

The maximum temperature so far today is 62F, which is 1 degree
above the normal high of 61F. The minimum temperature since
midnight is 49F, which is 5 degrees above the normal low of 44F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus distant S-W-NNW,
few altocumulus/castellanus distant N-SE, few cirrus distant
SE-SW-W
Temperature: 52F; Dew Point: 43F; Relative Humidity: 71%
Wind: N @ 12G21 kts
Sea-level pressure: 1021.8 mb; 30.17 in. Hg: rising, then more rapidly
Visibility: 70 miles
6-hr Max temp: 54F
6-hr Min temp: 49F
24-hr Precip: 0.01 inches
BHO SA 1155 CLR 70 218/52/43/3512G21/017/ FEW SC DSNT S-W-NNW
AND DSNT NE FEW AC/ACC DSNT N-SE FEW CI DSNT SE-SW-W/ 8/581
53028 70001 10054 20049

10 A.M.
Weather: Clear, few stratocumulus distant W-NNW, few altocumulus
castellanus distant ESE-SSE, few cirrus all quadrants
Temperature: 58F; Dew Point: 42F; Relative Humidity: 56%
Wind: N @ 8G16 kts
Sea-level pressure: 1023.7 mb; 30.23 in. Hg: rising, then steady
Visibility: 70 miles
3-hr Precip: 0.00 inches
BHO SA 1455 CLR 70 237/58/42/3608G16/023/ FEW SC DSNT W-NNW
FEW ACC DSNT ESE-SSE FEW CI ALQDS/ 8/581 51019

1 P.M.
Weather: Clear, few cirrus all quadrants
Temperature: 62F; Dew Point: 39F; Relative Humidity: 42%
Wind: N @ 6 kts, wind light
Sea-level pressure: 1022.8 mb; 30.20 in. Hg: rising, then falling
Visibility: 70 miles
6-hr Max temp: 62F
6-hr Min temp: 52F
6-hr Precip: 0.00 inches
BHO SA 1755 CLR 70 228/62/39/3606/020/ FEW CI ALQDS WND LGT/
8/001 58009 10062 20052

————————————————————–

SUMMARY FOR WEDNESDAY, OCTOBER 14, 2026

TEMPERATURE (DEGREES F)
MAX…….77   NORMAL…..62
MIN…….55   NORMAL…..45
MEAN……66   NORMAL…..53

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………+13
TOTAL DEPARTURE FOR THE MONTH (OCT)…………………+42 [+2.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2026 THRU JUN 2027)
TOTAL HEATING UNITS FOR YESTERDAY……………..0  DEPARTURE…….-12
TOTAL HEATING UNITS FOR THE MONTH (OCT)……….99  DEPARTURE…….-38
TOTAL HEATING UNITS FOR THE SEASON…………..220  DEPARTURE…….-34
TOTAL HEATING UNITS LAST SEASON TO DATE………174  DEPARTURE…….+46

COOLING DEGREE DAYS (SEASON: JAN 2026 THRU DEC 2026)
TOTAL COOLING UNITS FOR YESTERDAY……………..1  DEPARTURE……..+1
TOTAL COOLING UNITS FOR THE MONTH (OCT)……….10  DEPARTURE……..+4
TOTAL COOLING UNITS FOR THE SEASON…………..815  DEPARTURE……+139
TOTAL COOLING UNITS LAST SEASON TO DATE………756  DEPARTURE…….+59

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)………..31 WNW  @   10:19 A.M.
VECTOR #1 (1-Sec)……….30 WNW  @   10:19 A.M.
VECTOR #2 (1-Sec)……….31 WNW  @   10:19 A.M.
DAVIS #1……………….30 W    @   10:19 A.M.
DAVIS #2 ………………30 WNW  @   10:19 A.M.
RMY #1 (Instantaneous)…..31 WNW  @   10:19 A.M.
RMY #2 (Instantaneous)…..31 W    @   10:20 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)……30 WNW  @   10:19 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………21 W    @   12:12 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..21 WNW  @   10:21 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..24 W    @   10:20 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………22 W    @   10:21 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………23 WNW  @   10:21 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..20 WNW  @   10:21 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..23 W    @   10:20 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………21 WNW  @   10:21 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….12.0 WNW [289 total miles] VECTOR #1……………..12.1
VECTOR #2……………..13.1
DAVIS #1………………12.3 W
DAVIS #2…………………M
RMY #1………………..12.0 W
RMY #2………………..12.7 W
RICHARDS (C5C)…………12.1

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.01 DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE MONTH (OCT)……..1.88 DEPARTURE…..-0.49
TOTAL PRECIPITATION FOR THE YEAR (2026)…….39.40 DEPARTURE…..-1.64

————————————————————–

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/+2/0.00/661/97             40 WNW VEC1 39 WNW RMY 40
10/10 62/44/53/-2/0.00/549/81             22 NW  VEC1 22 NW  RMY 23
10/11 58/48/53/-1/1.63/014/02             31 ENE VEC1 31 ENE RMY 31
10/12 68/47/58/+4/0.11/390/58             28 NE  VEC1 28 NE  RMY 27
10/13 59/50/55/+1/0.08/000/00             25 E   VEC1 25 ENE RMY 25
10/14 77/55/66/+13/0.01/394/59            31 WNW VEC1 30 WNW RMY 31

10/15 The low since midnight is 49F, the daily normal low is 44F.

————————————————————–

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 15
HIGH 83F IN 1897
LOW 29F IN 1887,1937
PRECIP 4.58 INCHES IN 2005
SNOWFALL TRACE IN 1961,1972
PEAK GUST 69 MPH W IN 2003

RECORDS FOR OCTOBER 16
HIGH 86F IN 1897
LOW 28F IN 1886
PRECIP 2.82 INCHES IN 1974
SNOWFALL TRACE IN 2009
PEAK GUST 68e MPH SSE IN 1954 (HURRICANE HAZEL)

TODAY’S REPORT PREPARED BY: Matt Douglas

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Blue Hill Observatory & Science Center · Legal

Data Use & Privacy Policy

Please read the full Policy before accessing Observatory data · Effective January 1, 2025

Notice: By accessing, downloading, or using any Blue Hill Observatory data or services, you unconditionally accept and agree to be bound by this Policy in its entirety. If you do not agree, you may not access or use Observatory data.
Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
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