Sunday, October 5, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, OCTOBER 5, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0546E
SUNSET: 1718E
SUNNY SKIES CONTINUE WITH WELL ABOVE NORMAL TEMPERATURES….
Today is another spectacular weekend day, especially for early
October standards. Skies have been clear all day allowing for
an abundance of sunshine. A rather warm air mass is over the
region which had lead to temperatures that are well above normal
for this time of year.
Temperatures started the day in the low 60s (normal low should
be in the upper 40s). Readings quickly ramped up after sunrise
reaching the low 70s by mid morning. We have reached the low
to almost mid 80s by early this afternoon. For reference, the
record high for today is 86F degrees, which was set in 2007.
Dew point values are a bit higher today than yesterday reaching
60F by late this morning and holding at that value into early
this afternoon.
Winds were more active during the wee hours of the morning, but
have since decreased markedly with generally light and variable
conditions for the past several hours. The average speed so far
is around 8mph. The peak gust so far for the day is 16mph, which
occurred just before 4:30am this morning.
Visibility is reduced a bit today by haziness, with 40 miles
being the view all day.
The maximum temperature so far today is 83F degrees, which is
18 degrees above the normal high of 65F. The minimum temperature
since midnight is 62F degrees, which is 14 degrees above the
normal low of 48F.
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Today’s Observations:
7 A.M.
Weather: Clear, few cirrus distant NE-ESE
Temperature: 66F; Dew Point: 53F; Relative Humidity: 62%
Wind: NE @ 5 kts, wind light
Sea-level pressure: 1026.5 mb; 30.31 in. Hg: rising, unsteadily
Visibility: 40 miles, hazy
6-hr Max temp: 66F
6-hr Min temp: 62F
24-hr Precip: 0.00 inches
BHO SA 1155 CLR 40 265/66/53/0405/031/ FEW CI DSNT NE-ESE HAZY
WND LGT/ 8/001 52016 10066 20062
10 A.M.
Weather: Clear, few cirrus distant NNE-ESE
Temperature: 75F; Dew Point: 60F; Relative Humidity: 59%
Wind: Calm
Sea-level pressure: 1026.3 mb; 30.31 in. Hg: rising, then falling
Visibility: 40 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 CLR 40 263/75/60/0000/031/ FEW CI DSNT NNE-ESE HAZY
WND CALM/ 8/001 50008
1 P.M.
Weather: Clear, few cirrus distant NE-E
Temperature: 83F Dew Point: 60F; Relative Humidity: 46%
Wind: S @ 5 kts, wind light
Sea-level pressure: 1025.0 mb; 30.27 in. Hg: steady, then falling
Visibility: 40 miles, hazy
6-hr Max temp: 83F
6-hr Min temp: 66F
6-hr Precip: 0.00 inches
BHO SA 1755 CLR 40 250/83/60/1905/027/ FEW CI DSNT NE-E HAZY
WND LGT/ 8/001 58013 10083 20066
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SUMMARY FOR SATURDAY, OCTOBER 4, 2025
TEMPERATURE (DEGREES F)
MAX…….81 NORMAL…..66
MIN…….53 NORMAL…..49
MEAN……67 NORMAL…..57
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………+10
TOTAL DEPARTURE FOR THE MONTH……………………….+3 [+0.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY……………..0 DEPARTURE……..-9
TOTAL HEATING UNITS FOR THE MONTH…………….29 DEPARTURE……..-3
TOTAL HEATING UNITS FOR THE SEASON……………92 DEPARTURE…….-58
TOTAL HEATING UNITS LAST SEASON TO DATE……….84 DEPARTURE……..+8
COOLING DEGREE DAYS (SEASON JAN 2025 THRU DEC 2025)
TOTAL COOLING UNITS FOR YESTERDAY……………..2 DEPARTURE……..+1
TOTAL COOLING UNITS FOR THE MONTH……………..2 DEPARTURE………0
TOTAL COOLING UNITS FOR THE SEASON…………..738 DEPARTURE…….+65
TOTAL COOLING UNITS LAST SEASON TO DATE………757 DEPARTURE…….-19
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 NNW @ 07:22 A.M.*
VECTOR #1 (1-Sec)……….18 NW @ 07:25 A.M.
VECTOR #2 (1-Sec)……….19 NW @ 07:24 A.M.
DAVIS #1……………….18 W @ 02:10 A.M.
DAVIS #2 ………………17 WSW @ 02:35 A.M.
RMY #1 (Instantaneous)…..19 NW @ 07:25 A.M.
RMY #2 (Instantaneous)…..18 WSW @ 12:32 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)……18 NW @ 07:21 A.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………15 WNW @ 02:44 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..14 W @ 02:10 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15 WNW @ 02:35 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………14 W @ 02:04 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………15 WNW @ 02:35 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 WSW @ 12:43 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 WNW @ 02:35 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………14 WNW @ 02:31 A.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………7.6 WNW [182 total miles]
VECTOR #1……………….8.1
VECTOR #2……………….8.5
DAVIS #1………………..8.2 W
DAVIS #2………………..8.0 WNW
RMY #1………………….7.9 WSW
RMY #2………………….8.4 W
RICHARDS (C5C)…………..8.4
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE MONTH…………..0.00 DEPARTURE…..-0.66
TOTAL PRECIPITATION FOR THE YEAR (2025)…….35.82 DEPARTURE…..-3.51
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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/…/.. 28 NE VEC1 28 NE RMY 28
10/3 72/46/59/+2/0.00/…/.. 23 SW VEC1 23 SW RMY 23
10/4 81/53/67/+10/0.00/…/.. 18 NNW VEC1 18 NW RMY 19
10/5 The low since midnight is 62F, the daily normal low is 48F.
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OCTOBER DAILY RECORDS TO DATE
NONE.
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR OCTOBER 5
HIGH 86F IN 2007
LOW 29F IN 1965
PRECIP 3.17 INCHES IN 1962
PEAK GUST 64e MPH S IN 1979
RECORDS FOR OCTOBER 6
HIGH 83F IN 1990, 2007
LOW 26F IN 1965
PRECIP 3.78 INCHES IN 1962
PEAK GUST 60e MPH S IN 1942
TODAY’S REPORT PREPARED BY: Matt Douglas
