Friday, August 8, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, AUGUST 8, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0444E
SUNSET: 1855E
SUNSHINE WITH PARTLY CLOUDY SKIES AND LIGHT WIND TODAY….
This morning started with mostly clear skies and a bit of
chill to the air, as we had an overnight low of 61F. As the
day heated up, high level clouds moved into the area but we
remained dry with partly cloudy skies throughout the late
morning and early afternoon. With the dry air and low humidity
it feels very comfortable for outdoor activities or just
simply soaking in a rare cool August day.
Temperatures have remained seasonable, with readings in the
70s to low 80s by afternoon. Dew points also remain low, giving
us another day with comfortable air to enjoy. Dew point values
have ranged from the upper 40s to low 50s for much of the day.
The wind has been light today, with flow coming from the west
early this morning to a more southerly flow by afternoon. The
average speed for the day so far is only around 7mph. The peak
gust so far for the day is 14mph, which occurred just before
2am this morning.
Despite the dry air and crisp, blue sky, we have only managed
between 30-40 miles of visibility throughout the day.
The maximum temperature so far today is 82F degrees, which is
1 degree above the normal high of 81F. The minimum temperature
since midnight is 61F degrees, which is 3 degrees below the
normal low of 64F.
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Today’s Observations:
7 A.M.
Weather: Clear, few altocumulus NNE-ESE, few cirrus
all quadrants
Temperature: 70F; Dew Point: 46F; Relative Humidity: 42%
Wind: W @ 2 kts, wind light
Sea-level pressure: 1026.4 mb; 30.31 in. Hg: rising unsteady
Visibility: 40 miles
6-hr Max temp: 67F
6-hr Min temp: 61F
24-hr Precip: 0.00 inches
BHO SA 1155 CLR 40 264/70/46/2702/031/ FEW AC NNE-ESE
FEW CI ALQDS WND LGT/ 8/051 52010 10070 20061
10 A.M.
Weather: Scattered cirrocumulus, scattered cirrus
Temperature: 77F; Dew Point: 52F Relative Humidity: 41%
Wind: SSW @ 6 kts, wind light
Sea-level pressure: 1026.6 mb; 30.32 in. Hg: steady, then
rising
Visibility: 40 miles
3-hr Precip: 0.00 inches
BHO SA 1455 220 SCT 250 SCT 40 266/77/52/2006/032/ WND LGT/
8/009 53002
1 P.M.
Weather: Scattered cirrocumulus, scattered cirrus
Temperature: 81F Dew Point: 51F; Relative Humidity: 35%
Wind: ESE @ 5 kts, wind light and variable
Sea-level pressure: 1025.3 mb; 30.28 in. Hg: steady, then
falling
Visibility: 30 miles
6-hr Max temp: 82F
6-hr Min temp: 70F
6-hr Precip: 0.00 inches
BHO SA 1755 200 SCT 250 SCT 30 253/81/51/1405/028/ WND L/V/
8/009 58013 10082 20070
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SUMMARY FOR THURSDAY, AUGUST 7, 2025
TEMPERATURE (DEGREES F)
MAX…….81 NORMAL…..81
MIN…….61 NORMAL…..64
MEAN……71 NORMAL…..73
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-2
TOTAL DEPARTURE FOR THE MONTH………………………-30 [-4.1 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY……………..0 DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH……………..0 DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE SEASON…………….1 DEPARTURE……..-8
TOTAL HEATING UNITS LAST SEASON TO DATE………..0 DEPARTURE……..+1
COOLING DEGREE DAYS (SEASON JAN 2025 THRU DEC 2025)
TOTAL COOLING UNITS FOR YESTERDAY……………..6 DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE MONTH…………….28 DEPARTURE…….-27
TOTAL COOLING UNITS FOR THE SEASON…………..539 DEPARTURE…….+97
TOTAL COOLING UNITS LAST SEASON TO DATE………580 DEPARTURE…….-41
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
F420C (Official)………..18 ENE @ 03:34 P.M.
VECTOR #1 (1-Sec)……….18 ENE @ 03:34 P.M.
VECTOR #2 (1-Sec)……….20 ENE @ 03:34 P.M.
DAVIS #1……………….17 ENE @ 03:34 P.M.
DAVIS #2 ………………18 ENE @ 03:34 P.M.
RMY #1 (Instantaneous)…..17 ENE @ 03:34 P.M.
RMY #2 (Instantaneous)…..20 ENE @ 03:34 P.M.
MERLIN…………………16 ESE
RICHARDS (C5C) (Inst)……17 ESE @ 03:34 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………12 ESE @ 03:35 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..12 @ 03:35 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..13 @ 03:35 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………12 ESE @ 03:35 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………14 S @ 07:52 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..12 ESE @ 03:35 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..13 ESE @ 03:35 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………12 ESE @ 03:35 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………5.8 SE [139 total miles]
VECTOR #1……………….6.4
VECTOR #2……………….6.7
DAVIS #1………………..6.1 SSE
DAVIS #2………………..6.2 SSE
RMY #1………………….6.3 SSE
RMY #2………………….6.7 SE
RICHARDS (C5C)…………..M
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..0.44 DEPARTURE…..-0.49
TOTAL PRECIPITATION FOR THE YEAR (2025)…….29.89 DEPARTURE…..-1.74
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PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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
8/1 71/57/64/-9/0.44/546/63 28 NE VEC1 28 NE RMY 27
8/2 75/54/65/-8/0.00/838/97 18 NNW VEC1 18 NNW RMY 18
8/3 83/59/71/-2/0.00/784/91 21 SSW VEC1 21 SSW RMY 21
8/4 84/61/73/0/0.00/757/88 17 W VEC1 17 W RMY 17
8/5 73/62/68/-5/0.00/480/56 28 NE VEC1 27 NE RMY 28
8/6 77/61/69/-4/0.00/248/29 17 ENE VEC1 17 ENE RMY 16
8/7 81/61/71/-2/0.00/…/.. 18 ESE VEC1 18 ESE RMY 17
8/8 The low since midnight is 61F, the daily normal low is 64F.
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AUGUST 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 AUGUST 8
HIGH 97F IN 2022
LOW 47F IN 1903
PRECIP 3.08 INCHES IN 1976
PEAK GUST 45 MPH WNW IN 1958
RECORDS FOR AUGUST 9
HIGH 100F IN 1949
LOW 49F IN 1899
PRE 2.65 INS IN 1976
PEAK GUST 90 MPH SW IN 1968
TODAY’S REPORT PREPARED BY: Amanda Joly
