Thursday, June 26, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY, JUNE 26, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0409E
SUNSET: 1925E
HEAT-WAVE BREAKS WITH MUCH COOLER CONDITIONS TODAY ALONG WITH
SCATTERED SHOWERS….
The heat-wave broke overnight with the arrival of a backdoor cold
front sliding down from the northeast. The wind shifted to an
easterly direction with falling temperatures and lowering dew point
values. Some scattered rain showers have been moving across the
area as well through the morning into early this afternoon, however
they have been mainly on the light side with only 0.03″ of rain
fall so far through 1pm.
The temperature was still in the upper 70s at midnight, which is
when the high temperature for the day occurred. Since then, there
has been a gradual decline with the low so far of 60F which occurred
between 8-9am this morning. Temperatures have been stuck in the
60s throughout the day light hours, which is some 30+ degrees cooler
than the past couple of days.
The dew point dropped into the mid 50s following the backdoor front
and has been holding at this value through the day today.
The onshore wind has been averaging around 11mph so far. It was
pretty gusty during the early to mid morning hours with gusts
approaching 30mph. However, the wind has decreased some since. The
peak gust so far for the day is 30mph, which occurred just after
5:30am this morning.
The visibility has been fairly decent today outside of rain showers.
The prevailing view has been around 50-60 miles today!
The maximum temperature for today is 77F degrees, which is 2 degrees
below the normal high of 79F. The minimum temperature since midnight
is 60F degrees, which is 1 degree below the normal low of 61F.
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Today’s Observations:
7 A.M.
Weather: Overcast altostratus, virga distant SE-SW
Temperature: 64F; Dew Point: 54F; Relative Humidity: 70%
Wind: ENE @ 9G16 kts
Sea-level pressure: 1021.9 mb; 30.18 in. Hg: rising, then more rapidly
Visibility: 60 miles
6-hr Max temp: 73F
6-hr Min temp: 62F
24-hr Precip: 0.01 inches
BHO SA 1155 E50 OVC 60 219/64/54/0709G16/018/ VIRGA DSNT SE-SW/
8/02/ 53018 6001/ 70001 10073 20062
10 A.M.
Weather: Overcast altostratus, virga distant ESE-S-W
Temperature: 62F; Dew Point: 55F; Relative Humidity: 78%
Wind: ENE @ 8kts
Sea-level pressure: 1022.1 mb; 30.18 in. Hg: rising, then falling
Visibility: 60 miles, 15 miles SE-SW
3-hr Precip: 0.02 inches
BHO SA 1455 E50 OVC 60 221/62/55/0608/018/ VIRGA DSNT ESE-S-W
RW-B02E09 VSBY 15 SE-SW/ 8/02/ 50002 6002/
1 P.M.
Weather: Overcast nimbostratus, few stratocumulus all quadrants,
virga distant WNW-N-ESE
Temperature: 61F Dew Point: 57F; Relative Humidity: 86%
Wind: NE @ 8G16 kts
Sea-level pressure: 1022.8 mb; 30.20 in. Hg: rising steadily
Visibility: 50 miles, thin fog NNW-ENE
6-hr Max temp: 64F
6-hr Min temp: 60F
6-hr Precip: 0.02 inches
BHO SA 1755 E50 OVC 50 228/61/57/0408G16/020/ FEW SC ALQDS
THN F NNW-ENE VIRGA DSNT WNW-N-ESE RW-B20E40/ 8/52/ 52007 6002/
10064 20060
————————————————————–
SUMMARY FOR WEDNESDAY, JUNE 25, 2025
TEMPERATURE (DEGREES F); R = DAILY RECORD
MAX…….93R NORMAL…..79
MIN…….76R NORMAL…..61
MEAN……85 NORMAL…..70
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………+15
TOTAL DEPARTURE FOR THE MONTH………………………+88 [+3.3 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………..0 DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH…………….50 DEPARTURE…….-13
TOTAL HEATING UNITS FOR THE SEASON………….5665 DEPARTURE……-543
TOTAL HEATING UNITS LAST SEASON TO DATE……..5391 DEPARTURE……+274
COOLING DEGREE DAYS (SEASON JAN 2025 THRU DEC 2025)
TOTAL COOLING UNITS FOR YESTERDAY…………….20 DEPARTURE…….+15
TOTAL COOLING UNITS FOR THE MONTH……………155 DEPARTURE…….+74
TOTAL COOLING UNITS FOR THE SEASON…………..172 DEPARTURE…….+63
TOTAL COOLING UNITS LAST SEASON TO DATE………150 DEPARTURE…….+22
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)……….E20 NW @ 08:13 A.M.
VECTOR #1 (1-Sec)……….20 NW @ 08:13 A.M.
VECTOR #2 (1-Sec)……….21 WNW @ 05:24 A.M.
DAVIS #1……………….19 ENE @ 01:33 P.M.
DAVIS #2 ………………19 WNW @ 05:25 A.M.
RMY #1 (Instantaneous)…..20 NW @ 08:13 A.M.
RMY #2 (Instantaneous)…..20 NE @ 01:31 P.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………14 ENE @ 02:04 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..14 @ 02:01 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15 @ 01:43 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………15 ENE @ 02:01 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………15 E @ 01:43 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 ENE @ 02:01 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 ENE @ 01:43 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………8.2 NW [196 total miles]
VECTOR #1……………….8.3
VECTOR #2……………….8.8
DAVIS #1………………..8.5 NW
DAVIS #2………………..8.6 NNW
RMY #1………………….8.2 WNW
RMY #2………………….8.8 WNW
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.01 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..1.44 DEPARTURE…..-2.52
TOTAL PRECIPITATION FOR THE YEAR (2025)…….23.18 DEPARTURE…..-3.38
————————————————————–
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 The low since midnight is 60F, the daily normal low is 61F.
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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
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR JUNE 26
HIGH 96F IN 1952
LOW 45F IN 1986
PRECIP 1.63 INS IN 2024
PEAK GUST 48 MPH N IN 1998
RECORDS FOR JUNE 27
HIGH 93F IN 1999, 2007
LOW 46F IN 1897
PRECIP 1.72 INS IN 1938
PEAK GUST 55e N IN 1945
TODAY’S REPORT PREPARED BY: MFD
