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Sunday, June 15, 2025

June 15, 2025

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, JUNE 15, 2025 ALL TIMES ARE…

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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

SUNDAY, JUNE 15, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0407E
SUNSET:  1923E

MOSTLY CLOUDY MORNING LEADS TO A DRY PARTLY CLOUDY AFTERNOON….

Today has been a beautiful day for outdoor activities, as the
dew points have been relatively low and it’s been dry. This
morning we had overcast conditions but by mid morning the sunshine
had come out and we were under partly cloudy skies for much of
the remaining day.

Temperatures are still trending below normal, but thanks to the
sunshine and dry air it is starting to feel a bit warmer. Dew
points have remained in the lower 50’s which has given the area
some comfortable air to enjoy.

Winds have been on the light side today and out of the east-
northeast. The average speed so far today is around 7mph. The
peak gust so far is 17mph, which occurred just before 11:00am
this morning.

Visibility has been in the 30-40 mile range for much of the day.
The smoke aloft that was sitting over the region is starting to
slowly move offshore, giving us a view of Mt. Wachusett for the
first time since last Wednesday.

The maximum temperature for today is 66F degrees, which is 9
degrees below the normal high of 75F. The minimum temperature
since midnight is 53F degrees, which is 5 degrees below the
normal low of 58F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Overcast stratocumulus
Temperature: 55F; Dew Point: 54F; Relative Humidity: 97%
Wind: ENE @ 6 kts, wind light
Sea-level pressure: 1022.8 mb; 30.20 in. Hg: rising, then falling
Visibility: 30 miles
6-hr Max temp: 55F
6-hr Min temp: 53F
24-hr Precip:  0.07 inches
BHO SA 1155 E10 OVC 30 228/55/54/0606/020/ WND LGT/ 8/5// 50005 70007
10055 20053

10 A.M.
Weather: Broken stratocumulus, broken cirrocumulus, few cumulus
along horizon all quadrants
Temperature: 62F; Dew Point: 52F; Relative Humidity: 72%
Wind: ENE @ 4 kts, wind light
Sea-level pressure: 1023.2 mb; 30.22 in. Hg: rising, then falling
Visibility: 40 miles
3-hr Precip: 0.00 inches
BHO SA 1455 E80 BKN 220 BKN 40 232/62/52/0604/022/ FEW CU ALNG HRZN
ALQDS WND LGT/ 8/259 50004

1 P.M.
Weather: Scattered altocumulus/altostratus, broken cirrocumulus,
few cumulus all quadrants
Temperature: 66F Dew Point: 53F; Relative Humidity: 64%
Wind: ENE @ 6 kts, wind light
Sea-level pressure: 1022.8 mb; 30.20 in. Hg: falling, then more slowly
Visibility: 40 miles
6-hr Max temp: 66F
6-hr Min temp: 55F
6-hr Precip:  0.00 inches
BHO SA 1755 E80 SCT 220 BKN 40 228/66/53/0706/020/ FEW CU ALQDS
WND LGT/ 8/279 56004 10066 20055

————————————————————–

SUMMARY FOR SATURDAY, JUNE 14, 2025

TEMPERATURE (DEGREES F)
MAX…….58   NORMAL…..75
MIN…….54   NORMAL…..57
MEAN……56   NORMAL…..66

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………-10
TOTAL DEPARTURE FOR THE MONTH………………………+16 [+0.9 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………..0  DEPARTURE……..+7
TOTAL HEATING UNITS FOR THE MONTH…………….43  DEPARTURE……..-6
TOTAL HEATING UNITS FOR THE SEASON………….5658  DEPARTURE……-536
TOTAL HEATING UNITS LAST SEASON TO DATE……..5387  DEPARTURE……+271

COOLING DEGREE DAYS (SEASON JAN 2025 THRU DEC 2025)
TOTAL COOLING UNITS FOR YESTERDAY……………..0  DEPARTURE……..-3
TOTAL COOLING UNITS FOR THE MONTH…………….43  DEPARTURE……..+9
TOTAL COOLING UNITS FOR THE SEASON……………60  DEPARTURE……..-2
TOTAL COOLING UNITS LAST SEASON TO DATE……….73  DEPARTURE…….-13

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)……….E24 NE   @   12:40 P.M.
VECTOR #1 (1-Sec)……….24 NE   @   12:40 P.M.
VECTOR #2 (1-Sec)……….24 NE   @   12:30 P.M.
DAVIS #1……………….25 ENE  @   11:41 A.M.
DAVIS #2 ………………25 E    @   12:30 P.M.
RMY #1 (Instantaneous)…..24 NE   @   12:40 P.M.
RMY #2 (Instantaneous)…..25 NE   @   12:30 P.M.
MERLIN…………………22 ENE
RICHARDS (C5C) (Inst)…..OTS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 ENE  @   11:46 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16      @   12:41 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16      @   11:46 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………17 E    @   11:43 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 E    @   11:46 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..16 ENE  @   11:43 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 ENE  @   11:46 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………8.3 ENE [199 total miles] VECTOR #1……………….8.1
VECTOR #2……………….9.0
DAVIS #1………………..8.8 E
DAVIS #2………………..8.8 E
RMY #1………………….8.2 ENE
RMY #2………………….8.8 ENE
RICHARDS (C5C)…………..OTS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.07 DEPARTURE…..-0.09
TOTAL PRECIPITATION FOR THE MONTH…………..1.26 DEPARTURE…..-1.00
TOTAL PRECIPITATION FOR THE YEAR (2025)…….23.00 DEPARTURE…..-1.86

————————————————————–

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/…/..          47 WNW VEC1 47 WNW RMY 49
6/13  76/57/67/+1/T/…/..              20 E   VEC1 20 E   RMY 20
6/14  58/54/56/-10/0.09/…/..          24 NE  VEC1 24 NE  RMY 24

6/15 The low since midnight is 53F, the daily normal low is 58F.

————————————————————–

JUNE DAILY RECORDS TO DATE

NONE.

————————————————————–

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

RECORDS FOR JUNE 15
HIGH 94F IN 1988
LOW 42F IN 1959, 1978
PRECIP 2.04 INS IN 1903
PEAK GUST 52 MPH SW IN 1972

RECORDS FOR JUNE 16
HIGH 92F IN 1891
LOW 44F IN 1926
PRECIP 2.17 INS IN 1931
PEAK GUST 55 MPH W IN 1958

TODAY’S REPORT PREPARED BY: Amanda Joly

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Data Use & Privacy Policy

Please read the full Policy before accessing Observatory data · Effective January 1, 2025

Notice: By accessing, downloading, or using any Blue Hill Observatory data or services, you unconditionally accept and agree to be bound by this Policy in its entirety. If you do not agree, you may not access or use Observatory data.
Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
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