Sunday, June 29, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, JUNE 29, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0410E
SUNSET: 1925E
EARLY FOG BURNS OFF TO MAINLY SUNNY SKIES; WARM AND HUMID CONDITIONS
RETURN….
We started the day in the clouds with visibility only around 1/16th
of a mile. The fog and low clouds quickly burned off and by mid
morning sunshine had taken over mixed with only a few cumulus and
cirrus clouds.
Temperatures have warmed into the mid to upper 80s, so we’re back to
being above normal after a couple of days of a reprieve. The dew point
has been in the mid to upper 60s all day, so it feels quite muggy out
there today as well.
Winds started the day on the light side, even going calm for a time.
However it has increased a bit by late morning and into early this
afternoon. The average speed for the day so far is around 8mph. The
peak gust so far is 24mph, which occurred just after 10:30am this
morning.
As mentioned, the visibility was quite limited to around 1/16th of a
mile early this morning due to the dense fog, but has improved quite
a bit to around 50-60 miles by late this morning and early this
afternoon.
The maximum temperature for today is 88F degrees, which is 8 degrees
above the normal high of 80F. The minimum temperature since midnight
is 62F degrees, which is equal to the normal low of 62F.
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Today’s Observations:
7 A.M.
Weather: Sky obscured, vertical visibility 100ft
Temperature: 67F; Dew Point: 67F; Relative Humidity: 100%
Wind: WNW @ 2 kts, wind light
Sea-level pressure: 1015.5 mb; 29.99 in. Hg: rising, then more slowly
Visibility: 1/16 mile, fog
6-hr Max temp: 67F
6-hr Min temp: 63F
24-hr Precip: 0.03 inches
BHO SA 1155 X W2 1/16F 155/67/67/3002/999/ SUN DMLY VSBL WND LGT/
8//// 51009 70003 10067 20063
10 A.M.
Weather: Broken cumulus, broken cirrus, fog bank distant NNE-ENE
Temperature: 81F; Dew Point: 66F; Relative Humidity: 59%
Wind: W @ 9G16 kts
Sea-level pressure: 1014.9 mb; 29.97 in. Hg: falling steadily
Visibility: 50 miles, 15 miles NNE-ENE
3-hr Precip: 0.00 inches
BHO SA 1455 E30 BKN 250 BKN 50 149/81/66/2709G16/997/ F BNK DSNT
NNE-ENE VSBY 15 NNE-ENE/ 8/202 57006
1 P.M.
Weather: Clear, few cumulus all quadrants, few cirrus distant
ESE-S-WSW and distant NW-NNE, fog bank offshore distant NNE-ENE
Temperature: 87F Dew Point: 65F; Relative Humidity: 47%
Wind: W @ 7 kts
Sea-level pressure: 1014.4 mb; 29.96 in. Hg: falling, then more rapidly
Visibility: 60 miles
6-hr Max temp: 88F
6-hr Min temp: 67F
6-hr Precip: 0.00 inches
BHO SA 1755 CLR 60 144/87/65/2707/996/ FEW CU ALQDS FEW CI DSNT
ESE-S-WSW AND DSNT NW-NNE F BNK OFFSHR DSNT NNE-ENE/ 8/202 58005
10088 20067
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SUMMARY FOR SATURDAY, JUNE 28, 2025
TEMPERATURE (DEGREES F)
MAX…….72 NORMAL…..79
MIN…….58 NORMAL…..62
MEAN……65 NORMAL…..70
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-5
TOTAL DEPARTURE FOR THE MONTH………………………+78 [+2.6 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…….-15
TOTAL HEATING UNITS FOR THE SEASON………….5665 DEPARTURE……-544
TOTAL HEATING UNITS LAST SEASON TO DATE……..5392 DEPARTURE……+273
COOLING DEGREE DAYS (SEASON JAN 2025 THRU DEC 2025)
TOTAL COOLING UNITS FOR YESTERDAY……………..0 DEPARTURE……..-6
TOTAL COOLING UNITS FOR THE MONTH……………160 DEPARTURE…….+62
TOTAL COOLING UNITS FOR THE SEASON…………..177 DEPARTURE…….+51
TOTAL COOLING UNITS LAST SEASON TO DATE………166 DEPARTURE…….+11
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 SSE @ 04:36 A.M.
VECTOR #1 (1-Sec)……….20 SSE @ 04:36 A.M.
VECTOR #2 (1-Sec)……….20 SSE @ 05:40 A.M.
DAVIS #1……………….21 S @ 05:27 A.M.
DAVIS #2 ………………25 S @ 04:18 A.M.
RMY #1 (Instantaneous)…..20 SSE @ 04:36 A.M.
RMY #2 (Instantaneous)…..21 SSE @ 05:04 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………14 S @ 05:18 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15 @ 04:58 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15 @ 05:31 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………14 S @ 05:28 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 S @ 12:52 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 S @ 04:58 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 S @ 12:56 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………6.1 S [146 total miles]
VECTOR #1……………….6.8
VECTOR #2……………….7.2
DAVIS #1………………..6.3 SSE
DAVIS #2………………..6.8 SSE
RMY #1………………….6.7 SSE
RMY #2………………….7.3 SSE
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.03 DEPARTURE…..-0.10
TOTAL PRECIPITATION FOR THE MONTH…………..1.49 DEPARTURE…..-2.88
TOTAL PRECIPITATION FOR THE YEAR (2025)…….23.23 DEPARTURE…..-3.74
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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/-2/0.03/000/00 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 The low since midnight is 62F, the daily normal low is 62F.
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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 29
HIGH 95F IN 2021
LOW 42F IN 1919
PRECIP 1.60 INS IN 1889
PEAK GUST 49 MPH S IN 1957
RECORDS FOR JUNE 30
HIGH 94F IN 1964
LOW 47F IN 1919
PRECIP 3.04 INS IN 1921
PEAK GUST 51 MPH WNW IN 1957
TODAY’S REPORT PREPARED BY: MFD
