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Tuesday, October 13, 2026

October 13, 2026

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA TUESDAY, OCTOBER 13, 2026 ALL TIMES ARE…

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

TUESDAY, OCTOBER 13, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0555E
SUNSET:  1705E

OVERCAST AND COOL TODAY WITH PATCHY DRIZZLE AND FOG….

A backdoor cold front slipped through overnight bringing a
gusty east wind and some drizzle to the Hill during the wee
hours of this morning. Since then, the drizzle has been patchy
and the fog thinned out enough to allow the visibility to get
up to around 10 miles at times. Otherwise it’s been an overcast
and cool day with diminishing wind.

Temperatures were actually warmest around midnight when we were
in the upper 50s. Readings dropped to around 50F around 6am this
morning and have only recovered to the mid 50s through early
this afternoon. With the dew point also generally in the low to
mid 50s, the air has been nearly saturated throughout the day.

As mentioned, winds were gusty for a time during the wee hours
following the passage of the back door front. Since then there
has been a gradual decrease in speeds. The easterly flow has
been averaging at around 9mph for the day so far, however its
been closer to 6-7mph the past few hours. The peak gust for
the day so far occurred just after 3am this morning with a
speed of 25mph.

Visibility has been limited today due to patchy drizzle and
fog. The view has generally been 15 miles or less throughout
the day so far.

The maximum temperature so far today is 58F, which is 4 degrees
below the normal high of 62F. The minimum temperature since
midnight is 50F, which is 5 degrees above the normal low of 45F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Overcast stratus
Temperature: 51F; Dew Point: 51F; Relative Humidity: 98%
Wind: E @ 10G19 kts
Sea-level pressure: 1018.2 mb; 30.07 in. Hg: rising, then more rapidly
Visibility: 6 miles, fog
6-hr Max temp: 57F
6-hr Min temp: 50F
24-hr Precip: 0.04 inches
BHO SA 1155 E9 OVC 6F 182/51/51/0810G19/007/ VSBY 10 NE-ENE/
8/6// 53018 6004/ 70004 10057 20050

10 A.M.
Weather: Overcast stratus
Temperature: 54F; Dew Point: 52F; Relative Humidity: 91%
Wind: ESE @ 5 kts, wind light
Sea-level pressure: 1018.4 mb; 30.07 in. Hg: rising, then falling
Visibility: 10 miles, thin fog
3-hr Precip: 0.00 inches
BHO SA 1455 E10 OVC 10 184/54/52/1105/007/ THN F ALQDS
WND LGT/ 8/6// 50002

1 P.M.
Weather: Overcast stratus
Temperature: 56F; Dew Point: 54F; Relative Humidity: 95%
Wind: SSE @ 5 kts, wind light
Sea-level pressure: 1016.4 mb; 30.01 in. Hg: falling, then more rapidly
Visibility: 15 miles, thin fog
6-hr Max temp: 56F
6-hr Min temp: 51F
6-hr Precip: 0.00 inches
BHO SA 1755 E7 OVC 15 164/56/54/1605/001/ THN F ALQDS
WND LGT/ 8/6// 58020 10056 20051

————————————————————–

SUMMARY FOR MONDAY, OCTOBER 12, 2026

TEMPERATURE (DEGREES F)
MAX…….68   NORMAL…..62
MIN…….47   NORMAL…..45
MEAN……58   NORMAL…..54

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+4
TOTAL DEPARTURE FOR THE MONTH (OCT)…………………+28 [+2.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2026 THRU JUN 2027)
TOTAL HEATING UNITS FOR YESTERDAY……………..7  DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE MONTH (OCT)……….89  DEPARTURE…….-24
TOTAL HEATING UNITS FOR THE SEASON…………..210  DEPARTURE…….-21
TOTAL HEATING UNITS LAST SEASON TO DATE………148  DEPARTURE…….+62

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)………..28 NE   @   12:55 A.M.
VECTOR #1 (1-Sec)……….28 NE   @   12:55 A.M.
VECTOR #2 (1-Sec)……….30 NE   @   12:13 A.M.
DAVIS #1……………….26 NE   @   12:55 A.M.
DAVIS #2 ………………27 ENE  @   12:13 A.M.
RMY #1 (Instantaneous)…..27 NE   @   12:55 A.M.
RMY #2 (Instantaneous)…..28 NE   @   12:01 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)……25 N    @   04:06 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………17 ENE  @   12:17 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..17 ENE  @   12:14 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..19 NE   @   12:03 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………18 ENE  @   12:15 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 ENE  @   12:03 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..17 ENE  @   12:14 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 NE   @   12:03 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………17 ENE  @   12:14 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..9.1 N [219 total miles] VECTOR #1………………9.5
VECTOR #2……………..10.0
DAVIS #1……………….9.5 N
DAVIS #2…………………M
RMY #1…………………9.3 NNW
RMY #2…………………9.7 NNW
RICHARDS (C5C)………….9.8

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.04 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH (OCT)……..1.83 DEPARTURE…..-0.20
TOTAL PRECIPITATION FOR THE YEAR (2026)…….39.35 DEPARTURE…..-1.35

————————————————————–

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 58/48/53/-1/1.63/…/..             31 ENE VEC1 31 ENE RMY 31
10/12 68/47/58/+4/0.11/…/..             28 NE  VEC1 28 NE  RMY 27

10/13 The low since midnight is 50F, the daily normal low is 45F.

————————————————————–

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 13
HIGH 84F IN 1930,1954
LOW 29F IN 2012
PRECIP 5.87 INCHES IN 1895
SNOWFALL 4.2 INCHES IN 1934
PEAK GUST 51 MPH ENE IN 2025

RECORDS FOR OCTOBER 14
HIGH 79F IN 2000
LOW 28F IN 1958
PRECIP 2.69 INCHES IN 1990
SNOWFALL 2.0 INCHES IN 1913
PEAK GUST 63e W IN 1976

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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