Wednesday, July 2, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
WEDNESDAY, JULY 2, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0412E
SUNSET: 1925E
OVERNIGHT RAIN LINGERED INTO EARLY THIS MORNING, OTHERWISE A MAINLY
CLOUDY DAY….
Clouds have dominated the sky today as a frontal system is stalled
just south of the region. Showers and thunderstorms last evening
into very early this morning yielded a total of 0.16″ of rain. While
it’s not enough to help the annual deficit, it was still a bit of
much needed water for the lawns.
Despite the cloud cover today, temperatures have warmed into the mid
80s, so it’s yet another warm and humid day here at Blue Hill. The
dew point was in the low 70s all morning, but has dipped a bit into
the mid-upper 60s by early this afternoon.
The wind has been mostly steady today except for a brief period this
morning when it went light. It’s been averaging at around 9mph out
of the west-southwest today. The peak gust so far is 20mph, which
occurred at 12:45pm this afternoon.
Visibility has improved from around 30 miles early this morning to
around 40 miles by early this afternoon.
The maximum temperature for today is 85F degrees, which is 5 degrees
above the normal high of 80F. The minimum temperature since midnight
is 69F degrees, which is 7 degrees above the normal low of 62F.
————————————————————–
PRELIMINARY STATS FOR JUNE 2025
TEMPERATURE, Deg. F
Avg. Max. 78.5 [+3.1]
Avg. Min. 59.8 [+2.2]
Mean 69.2 [+2.7]
24-hour corrected mean: 68.1
Max. for month: 99F on the 24th
Min. for month: 47F on the 1st
HEATING DEGREE DAYS
Total heating units: 50 [-016]
Total for the season: 5665 [-545]
Total for last season: 5392
COOLING DEGREE DAYS
Total cooling units: 183 [+072]
Total for the season: 200 [+061]
Total for last season: 178
PRECIPITATION, Inches
Total: 1.49 [-3.14]
Greatest in 24 hrs: 0.95 on the 7th
SNOWFALL, Inches
Total: 0.0 [ 0.0]
Greatest in 24 hrs: N/A
WIND, mph
Avg. uncorrected wind speed: 9.5 mph
Avg. corrected wind speed: 10.1 mph
Prevailing wind direction: East-Northeast [13%]
Peak gust and direction: 52 WNW on the 20th
SUNSHINE:
Campbell-Stokes card minutes: 14580 of a possible 26376, or 55%
Astronomical total minutes: 15137 of a possible 27418 or 55%
————————————————————–
Today’s Observations:
7 A.M.
Weather: Overcast nimbostratus, few breaks in overcast distant WNW-N,
few stratus fractus distant SE-S, few stratocumulus distant W-WNW,
few lower altocumulus all quadrants
Temperature: 71F; Dew Point: 70F; Relative Humidity: 95%
Wind: WSW @ 7 kts
Sea-level pressure: 1011.4 mb; 29.87 in. Hg: steady, then rising
Visibility: 30 miles, thin fog
6-hr Max temp: 71F
6-hr Min temp: 69F
24-hr Precip: 0.16 inches
BHO SA 1155 E150 OVC 30 114/71/70/2507/987/ FEW BINOVC DSNT WNW-N
FEW STFRA DSNT SE-S FEW SC DSNT W-WNW FEW LWR AC ALQDS THN F ALQDS
VIRGA ALQDS/ 8/57/ 53007 6001/ 70016 10071 20069
10 A.M.
Weather: Scattered altocumulus/altostratus, overcast cirrostratus,
few breaks in overcast distant WNW-NNE, few stratocumulus all quadrants
Temperature: 78F; Dew Point: 72F; Relative Humidity: 82%
Wind: WSW @ 5 kts, wind light
Sea-level pressure: 1011.9 mb; 29.88 in. Hg: falling, then rising
Visibility: 35 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 150 SCT E200 OVC 35 119/78/72/2405/988/ FEW BINOVC DSNT
WNW-NNE FEW SC ALQDS HAZY WND LGT/ 8/577 53005
1 P.M.
Weather: Overcast cirrostratus, few breaks in overcast all quadrants,
few cumulus all quadrants few altocumulus all quadrants
Temperature: 84F Dew Point: 67F; Relative Humidity: 56%
Wind: W @ 9G17 kts
Sea-level pressure: 1010.8 mb; 29.85 in. Hg: falling, then more rapidly
Visibility: 40 miles, hazy
6-hr Max temp: 85F
6-hr Min temp: 71F
6-hr Precip: 0.00 inches
BHO SA 1755 E200 OVC 40 108/84/67/2709G17/985/ FEW BINOVC ALQDS
FEW CU ALQDS FEW AC ALQDS HAZY/ 8/257 58011 10085 20071
————————————————————–
SUMMARY FOR TUESDAY, JULY 1, 2025
TEMPERATURE (DEGREES F)
MAX…….90 NORMAL…..80
MIN…….68 NORMAL…..62
MEAN……79 NORMAL…..71
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+8
TOTAL DEPARTURE FOR THE MONTH……………………….+8 [+7.8 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………0
TOTAL HEATING UNITS FOR THE SEASON…………….0 DEPARTURE………0
TOTAL HEATING UNITS LAST SEASON TO DATE………..0 DEPARTURE………0
COOLING DEGREE DAYS (SEASON JAN 2025 THRU DEC 2025)
TOTAL COOLING UNITS FOR YESTERDAY…………….14 DEPARTURE……..+7
TOTAL COOLING UNITS FOR THE MONTH…………….14 DEPARTURE……..+7
TOTAL COOLING UNITS FOR THE SEASON…………..214 DEPARTURE…….+68
TOTAL COOLING UNITS LAST SEASON TO DATE………183 DEPARTURE…….+31
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)……….E38 W @ 07:13 P.M.
VECTOR #1 (1-Sec)……….38 W @ 07:13 P.M.
VECTOR #2 (1-Sec)……….38 WSW @ 07:13 P.M.
DAVIS #1……………….36 W @ 07:15 P.M.
DAVIS #2 ………………36 W @ 07:13 P.M.
RMY #1 (Instantaneous)…..39 W @ 07:13 P.M.
RMY #2 (Instantaneous)…..41 WSW @ 07:13 P.M.
MERLIN…………………38 W
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………25 SW @ 11:34 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..25 @ 07:15 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..25 @ 11:31 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………27 W @ 07:15 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………25 SW @ 11:31 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..24 W @ 07:15 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..25 SW @ 11:31 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..13.0 SW [311 total miles]
VECTOR #1………………13.0
VECTOR #2………………13.5
DAVIS #1……………….12.8 SW
DAVIS #2……………….13.6 SW
RMY #1…………………12.7 SW
RMY #2…………………13.5 SW
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.16 DEPARTURE…..+0.04
TOTAL PRECIPITATION FOR THE MONTH…………..0.16 DEPARTURE…..+0.04
TOTAL PRECIPITATION FOR THE YEAR (2025)…….23.29 DEPARTURE…..-3.96
————————————————————–
PRELIMINARY CLIMATE SUMMARY FOR JUNE 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
6/1 63/47/55/-7/0.01/588/65 40 W VEC1 40 W RMY 42
6/2 70/48/59/-3/T/780/86 25 WNW VEC1 25 WSW RMY 26
6/3 79/50/65/+3/0.00/853/94 23 SSW VEC1 23 SSW RMY 21
6/4 84/58/71/+8/0.00/708/78 26 SW VEC1 27 SW RMY 28
6/5 93/61/77/+14/0.00/819/90 18 WSW VEC1 18 SW RMY 19
6/6 81/63/72/+9/0.00/382/42 26 ENE VEC1 27 NE RMY 27
6/7 71/60/66/+2/0.95/000/00 26 NE VEC1 26 NE RMY 25 TSTM
6/8 67/55/61/-3/0.00/347/38 22 ENE VEC1 21 ENE RMY 22
6/9 61/55/58/-6/0.01/000/00 20 E VEC1 21 E RMY 20
6/10 62/54/58/-7/0.20/000/00 21 W VEC1 20 W RMY 20
6/11 81/58/70/+5/0.00/850/93 32 WSW VEC1 32 WSW RMY 33
6/12 85/64/75/+10/0.00/814/89 47 WNW VEC1 47 WNW RMY 49
6/13 76/57/67/+1/T/631/69 20 E VEC1 20 E RMY 20
6/14 58/54/56/-10/0.09/000/00 24 NE VEC1 24 NE RMY 24
6/15 67/53/60/-6/0.00/449/49 18 E VEC1 18 E RMY 17
6/16 73/52/63/-4/0.00/641/70 20 SE VEC1 20 ESE RMY 20
6/17 74/57/66/-1/0.12/028/03 22 S VEC1 22 S RMY 23
6/18 75/63/69/+2/0.02/018/02 22 SSW VEC1 23 SSW RMY 23
6/19 90/66/78/+10/0.00/523/57 31 SSW VEC1 31 SSW RMY 31
6/20 81/66/74/+6/0.00/853/93 52 WNW VEC1 52 WNW RMY 54
6/21 86/61/74/+6/0.00/871/95 22 NW VEC1 22 NW RMY 21
6/22 91/68/80/+11/0.03/477/52 32 W VEC1 32 W RMY 32
6/23 94/71/83/+14/0.00/807/88 22 SSW VEC1 22 SSW RMY 22
6/24 99/76/88/+19/0.00/880/96 28 W VEC1 27 W RMY 26
6/25 93/76/85/+15/0.00/824/90 20 NW VEC1 20 NW RMY 20
6/26 77/58/68/-2/0.03/000/00 30 E VEC1 30 E RMY 29
6/27 75/58/67/-3/0.00/522/57 22 S VEC1 22 S RMY 22
6/28 72/58/65/-5/0.03/000/00 20 SSE VEC1 20 SSE RMY 20
6/29 88/62/75/+4/0.00/668/73 24 WNW VEC1 24 WNW RMY 24
6/30 90/65/78/+7/0.00/804/88 22 SSW VEC1 22 SSW RMY 22
————————————————————–
JUNE DAILY RECORDS TO DATE
6/23 RECORD HIGH MAXIMUM TEMPERATURE OF 94F,
BEATING THE PREVIOUS RECORD OF 93F SET IN 1888
6/24 RECORD HIGH MINIMUM TEMPERATURE OF 76F,
BEATING THE PREVIOUS RECORD OF 70F SET IN 1909
6/24 RECORD HIGH MAXIMUM TEMPERATURE OF 99F,
BEATING THE PREVIOUS RECORD OF 91F SET IN 1914, 1976, 2013
THIS ALSO TIED THE HIGHEST JUNE TEMPERATURE WITH JUNE 4 1919
6/25 RECORD HIGH MINIMUM TEMPERATURE OF 76,
BEATING THE PREVIOUS RECORD OF 71F SET IN 1909
6/25 RECORD HIGH MAXIMUM TEMPERATURE OF 93F,
TIED WITH PREVIOUS OCCURRENCES IN 1943, 1980, 2005
————————————————————–
PRELIMINARY CLIMATE SUMMARY FOR JULY 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
7/1 90/68/79/+8/0.14/…/.. 38 W VEC1 38 W RMY 41 TSTM
7/2 The low since midnight is 69F, the daily normal low is 62F.
————————————————————–
JULY DAILY RECORDS TO DATE
NONE.
————————————————————–
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR JULY 2
HIGH 95F IN 1963
LOW 47F IN 1988
PRECIP 1.49 INS IN 2021
PEAK GUST 45 MPH SW IN 1999
RECORDS FOR JULY 3
HIGH 99F IN 1911
LOW 47F IN 1914
PRECIP 1.98 IN 2021
PEAK GUST 52 MPH NW IN 1963
TODAY’S REPORT PREPARED BY: MFD
