Friday, June 27, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, JUNE 27, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0409E
SUNSET: 1925E
CLOUDY START, THEN MOSTLY SUNNY WITH SEASONABLE TEMPERATURES….
We began the morning here mostly cloudy, with the broken mid-level
cloud deck providing us with a colorful sunrise! A clearing trend took
hold by late morning, giving us several hours of abundant sunshine.
Some cirrus and small cumulus moved in by early afternoon.
Thankfully, temperatures remain on the ‘cooler’ side today, allowing us a
bit of time to recover from the brutal heat wave earlier this week. The
low this morning was in the upper 50s, with a high so far in the mid 70s.
The dew point has remained in the low 50s, resulting in a comfortable feel
outside.
The wind has been rather light, with an average of 6mph. With the light
speeds, direction is variable, but is currently out of the east-southeast.
The peak gust took place just after noon time, with a speed of 18mph.
Visibility is decent today, rising slightly from 40 miles this morning
to 50 miles by the afternoon.
The maximum temperature for today is 75F degrees, which is 4 degrees
below the normal high of 79F. The minimum temperature since midnight
is 58F degrees, which is 3 degrees below the normal low of 61F.
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Today’s Observations:
7 A.M.
Weather: Broken altocumulus/altostratus, few cumulus distant WNW-NE
Temperature: 63F; Dew Point: 54F; Relative Humidity: 74%
Wind: ESE @ 2 kts, wind light
Sea-level pressure: 1026.1 mb; 30.30 in. Hg: rising, then more slowly
Visibility: 40 miles
6-hr Max temp: 63F
6-hr Min temp: 58F
24-hr Precip: 0.02 inches
BHO SA 1155 E100 BKN 40 261/63/54/1202/030/ FEW CU DSNT WNW-NE WND LGT/
8/270 51017 70002 10063 20058
10 A.M.
Weather: Scattered altocumulus, thin scattered cirrus,
few cumulus distant W-NE
Temperature: 72F; Dew Point: 53F; Relative Humidity: 52%
Wind: SE @ 5 kts, wind light
Sea-level pressure: 1026.6 mb; 30.32 in. Hg: rising, then falling
Visibility: 50 miles
3-hr Precip: 0.00 inches
BHO SA 1455 110 SCT 250 -SCT 50 266/72/53/1305/032/ FEW CU DSNT W-NE WND LGT/
8/251 50005
1 P.M.
Weather: Scattered altocumulus, scattered cirrostratus,
thin broken cirrus, few cumulus distant SSE-W-NNE
Temperature: 75F Dew Point: 53F; Relative Humidity: 47%
Wind: ESE @ 7 kts
Sea-level pressure: 1026.2 mb; 30.30 in. Hg: falling unsteadily
Visibility: 50 miles
6-hr Max temp: 75F
6-hr Min temp: 63F
6-hr Precip: 0.00 inches
BHO SA 1755 70 SCT 220 SCT E250 -BKN 50 262/75/53/1107/030/
FEW CU DSNT SSE-W-NNE/ 8/255 57004 10075 20063
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SUMMARY FOR THURSDAY, JUNE 26, 2025
TEMPERATURE (DEGREES F)
MAX…….77 NORMAL…..79
MIN…….58 NORMAL…..61
MEAN……68 NORMAL…..70
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-2
TOTAL DEPARTURE FOR THE MONTH………………………+86 [+3.1 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…….-14
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……………..3 DEPARTURE……..-3
TOTAL COOLING UNITS FOR THE MONTH……………158 DEPARTURE…….+71
TOTAL COOLING UNITS FOR THE SEASON…………..175 DEPARTURE…….+60
TOTAL COOLING UNITS LAST SEASON TO DATE………161 DEPARTURE…….+14
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)……….E30 E @ 05:37 A.M.
VECTOR #1 (1-Sec)……….30 E @ 05:37 A.M.
VECTOR #2 (1-Sec)……….30 ENE @ 06:11 A.M.
DAVIS #1……………….29 E @ 05:37 A.M.
DAVIS #2 ………………28 E @ 06:11 A.M.
RMY #1 (Instantaneous)…..29 ENE @ 01:52 A.M.
RMY #2 (Instantaneous)…..31 ENE @ 06:11 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………20 E @ 05:38 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..19 @ 05:38 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..20 @ 06:12 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………22 E @ 05:37 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………21 E @ 06:12 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..19 E @ 05:38 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 ENE @ 06:12 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………9.5 ENE [228 total miles]
VECTOR #1……………….9.0
VECTOR #2………………10.2
DAVIS #1……………….10.0 ENE
DAVIS #2……………….10.1 E
RMY #1………………….9.3 ENE
RMY #2………………….9.9 ENE
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.02 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..1.46 DEPARTURE…..-2.65
TOTAL PRECIPITATION FOR THE YEAR (2025)…….23.20 DEPARTURE…..-3.51
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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/…/.. 30 E VEC1 30 E RMY 29
6/27 The low since midnight is 58F, 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 27
HIGH 93F IN 1999, 2007
LOW 46F IN 1897
PRECIP 1.72 INS IN 1938
PEAK GUST 55e N IN 1945
RECORDS FOR JUNE 28
HIGH 95F IN 1991
LOW 47F IN 1970
PRECIP 3.27 INS IN 2020
PEAK GUST 52 MPH WSW IN 1993
TODAY’S REPORT PREPARED BY: Joshua Polen
