Friday, October 23, 2026

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

FRIDAY, OCTOBER 23, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0607E
SUNSET: 1650E

ALL DAY SUNSHINE AND SLIGHTLY BELOW NORMAL TEMPS TO START THE WEEKEND….

Today has featured clear skies with the exception of some distant
stratocumulus to our east. Chilly north flow was steady early
this morning, but since has slowed and it is starting to feel a bit
warmer. Overall, it’s been a fantastic day, high and dry conditions
and beautiful all around.

Temperatures started chilly at 40F early this morning. Temperatures
were slow to rise despite the all day sunshine, and as of 1pm this
afternoon we are still in the low 50s. Dew points have remained in
the low 30’s throughout the day, which is quite dry and gives a
slight bite to the air.

Winds have been mostly from the north today, with a slight shift
to the east northeast by the early afternoon. The average speed
for the day so far is around 11mph, but trending lower throughout
the day. The peak gust so far for the day is 29mph, which occurred
just before 2:30am this morning.

Visibility has been excellent for yet another day with a view
of 80 miles.

The maximum temperature so far today is 53F, which is 5 degrees
below the normal high of 58F. The minimum temperature since
midnight is 40F, which is 1 degree below the normal low of 41F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear, few stratocumulus distant ENE-SSE
Temperature: 43F; Dew Point: 31F; Relative Humidity: 61%
Wind: N @ 9G17 kts
Sea-level pressure: 1026.6 mb; 30.32 in. Hg: rising, then more slowly
Visibility: 80 miles
6-hr Max temp: 46F
6-hr Min temp: 40F
24-hr Precip: 0.00 inches
BHO SA 1155 CLR 80 266/43/31/3609G17/032/ FEW SC DSNT ENE-SSE/
8/500 51029 10046 20040

10 A.M.
Weather: Clear, few stratocumulus distant NE-SSE
Temperature: 48F; Dew Point: 30F; Relative Humidity: 49%
Wind: NNE @ 9G17 kts
Sea-level pressure: 1028.3 mb; 30.37 in. Hg: rising, then more slowly
Visibility: 80 miles
3-hr Precip: 0.00 inches
BHO SA 1455 CLR 80 283/48/30/0309G17/037/ FEW SC DSNT NE-SSE/
8/500 51017

1 P.M.
Weather: Clear, few stratocumulus distant ENE-ESE
Temperature: 53F; Dew Point: 33F; Relative Humidity: 47%
Wind: ENE @ 7 kts
Sea-level pressure: 1028.3 mb; 30.37 in. Hg: rising, then falling
Visibility: 80 miles
6-hr Max temp: 53F
6-hr Min temp: 43F
6-hr Precip: 0.00 inches
BHO SA 1755 CLR 80 283/53/33/0707/037/ FEW SC DSNT ENE-ESE/
8/500 50000 10053 20043

————————————————————–

SUMMARY FOR THURSDAY, OCTOBER 22, 2026

TEMPERATURE (DEGREES F)
MAX…….61 NORMAL…..59
MIN…….43 NORMAL…..42
MEAN……52 NORMAL…..50

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+2
TOTAL DEPARTURE FOR THE MONTH (OCT)…………………+33 [+1.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2026 THRU JUN 2027)
TOTAL HEATING UNITS FOR YESTERDAY…………….13 DEPARTURE……..-2
TOTAL HEATING UNITS FOR THE MONTH (OCT)………215 DEPARTURE…….-31
TOTAL HEATING UNITS FOR THE SEASON…………..336 DEPARTURE…….-27
TOTAL HEATING UNITS LAST SEASON TO DATE………260 DEPARTURE…….+76

COOLING DEGREE DAYS (SEASON: JAN 2026 THRU DEC 2026)
TOTAL COOLING UNITS FOR YESTERDAY……………..0 DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH (OCT)……….10 DEPARTURE……..+3
TOTAL COOLING UNITS FOR THE SEASON…………..815 DEPARTURE……+138
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)………..32 NNE @ 08:17 A.M.
VECTOR #1 (1-Sec)……….32 NNE @ 08:17 A.M.
VECTOR #2 (1-Sec)……….34 N @ 07:55 A.M.
DAVIS #1……………….29 NNE @ 08:17 A.M.
DAVIS #2 ………………30 NE @ 07:55 A.M.
RMY #1 (Instantaneous)…..33 NNE @ 08:13 A.M.
RMY #2 (Instantaneous)…..33 N @ 07:55 A.M.
MERLIN…………………30 NNE
RICHARDS (C5C) (Inst)……31 N @ 11:45 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………20 N @ 07:56 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..20 N @ 07:56 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..20 N @ 08:58 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 NNE @ 07:56 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………20 NNE @ 08:58 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..20 N @ 07:56 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 N @ 08:58 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………20 N @ 07:56 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….12.2 N [292 total miles] VECTOR #1……………..12.3
VECTOR #2……………..12.8
DAVIS #1………………12.3 NNE
DAVIS #2…………………M
RMY #1………………..12.0 N
RMY #2………………..12.4 N
RICHARDS (C5C)…………12.4

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.18
TOTAL PRECIPITATION FOR THE MONTH (OCT)……..2.18 DEPARTURE…..-1.67
TOTAL PRECIPITATION FOR THE YEAR (2026)…….39.70 DEPARTURE…..-2.82

————————————————————–

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 62/49/56/+3/0.00/…/.. 33 NNW VEC1 34 NNW RMY 35
10/16 65/48/57/+5/0.30/…/.. 33 SSW VEC1 33 SSW RMY 34
10/17 57/34/46/-6/T/…/.. 35 NW VEC1 35 NNW RMY 37
10/18 55/32/44/-8/0.00/…/.. 18 SSE VEC1 18 SSE RMY 18
10/19 57/42/50/-1/0.00/…/.. 20 NNE VEC1 19 NNE RMY 19
10/20 60/40/50/-1/0.00/…/.. 36 NE VEC1 36 NE RMY 37
10/21 53/44/49/-2/0.00/…/.. 35 NE VEC1 35 NE RMY 34
10/22 61/43/52/+2/0.00/…/.. 32 NNE VEC1 32 NNE RMY 33