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Friday, June 6, 2025

June 6, 2025

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA FRIDAY, JUNE 6, 2025 ALL TIMES ARE…

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

FRIDAY, JUNE 6, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0408E
SUNSET:  1918E

ANOTHER HUMID DAY, NOT AS HOT, HAZINESS AND SMOKE RETURNS….

Yesterday’s high of 93F was only a couple degrees shy of the record
of 95F, set in 1925. Overnight, our low only reached 70F (69.9F) and
surprisingly, that wasn’t even close to our record high overnight low
which was 78F, also set back in 1925. 70F for an overnight low this
time of year is quite anomalous, and thankfully it seems like the
current pattern should shift from that in the coming days.

Despite the heat and potential for convection, we have so far come up
empty handed in the precipitation department, with only 0.01 inches
for the month. While we are coming out of a previously soggy month
prior, starting the first week at -0.79 inches is not good, especially
with the above normal temperatures.

Speaking of temperatures, it has not been as warm as yesterday, but
with dew points still holding steady in the mid 60s, it really feels
quite muggy and summer-like. Thanks to the mostly cloudy conditions
and a generous sea breeze, we have warmed to 81F so far today. The
temperatures have started to slip into the upper 70’s after the final
observation, more than likely due to the sea breeze.

Yesterday’s southwesterly flow had brought very mild air to the hill,
so today’s sea breeze has been a welcome. The wind has been out of the
east northeast for much of the day, and with ocean temperatures in the
mid 50s, the air is much cooler. The average wind speed for the day so
far is around 10mph. The peak gust so far today is 27mph, which occurred
just after 6am.

Visibility has been limited today due to haziness. We have held steady
at around 20 miles for much of the day. A smoke layer was visible by
the early afternoon.

The maximum temperature for today is 81F degrees, which is 9 degrees
above the normal high of 72F. The minimum temperature since midnight
is 70F degrees, which is 15 degrees above the normal low of 55F.

————————————————————–

Today’s Observations:

7 A.M.
Weather:  Scattered cumulus, broken altocumulus/castellanus, broken
cirrus
Temperature: 71F; Dew Point: 63F; Relative Humidity: 76%
Wind: NE @ 14 kts
Sea-level pressure: 1015.3 mb; 29.98 in. Hg: rising, then more rapidly
Visibility: 20 miles, hazy
6-hr Max temp: 71F
6-hr Min temp: 70F
24-hr Precip:  0.00 inches
BHO SA 1155 60 SCT E100 BKN 250 BKN 20 153/71/63/0514/998/ HAZY/
8/281 53016 10071 20070

10 A.M.
Weather: Broken altocumulus/castellanus, broken cirrostratus
Temperature: 79F; Dew Point: 67F; Relative Humidity: 67%
Wind: E @ 5 kts, wind light
Sea-level pressure: 1014.6 mb; 29.96 in. Hg: falling, then rising
Visibility: 20 miles, hazy
3-hr Precip:  0.00 inches
BHO SA 1455 E100 BKN 220 BKN 20 146/79/67/1005/996/ HAZY WND LGT/
8/086 55007

1 P.M.
Weather: Broken cirrostratus, few altocumulus/castellanus all quadrants
Temperature: 80F Dew Point: 69F; Relative Humidity: 69%
Wind: ENE @ 7 kts
Sea-level pressure: 1013.5 mb; 29.93 in. Hg: falling, then more
rapidly
Visibility: 20 miles, smoke layer aloft all quadrants, hazy
6-hr Max temp: 81F
6-hr Min temp: 71F
6-hr Precip:  0.00 inches
BHO SA 1755 E220 BKN 20 135/80/69/0607/993/ FEW AC/ACC ALQDS K LYR ALF
ALQDS HAZY/ 8/086 58011 10081 20071

————————————————————–

SUMMARY FOR THURSDAY, JUNE 5, 2025

TEMPERATURE (DEGREES F)
MAX…….93   NORMAL…..72
MIN…….61   NORMAL…..54
MEAN……77   NORMAL…..63

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………+14
TOTAL DEPARTURE FOR THE MONTH………………………+15 [+2.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………..0  DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE MONTH…………….16  DEPARTURE……..-6
TOTAL HEATING UNITS FOR THE SEASON………….5631  DEPARTURE……-536
TOTAL HEATING UNITS LAST SEASON TO DATE……..5379  DEPARTURE……+252

COOLING DEGREE DAYS (SEASON JAN 2025 THRU DEC 2025)
TOTAL COOLING UNITS FOR YESTERDAY…………….12  DEPARTURE…….+10
TOTAL COOLING UNITS FOR THE MONTH…………….16  DEPARTURE……..+6
TOTAL COOLING UNITS FOR THE SEASON……………33  DEPARTURE……..-5
TOTAL COOLING UNITS LAST SEASON TO DATE……….49  DEPARTURE…….-16

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)………..18 WSW  @   12:03 A.M.
VECTOR #1 (1-Sec)……….18 SW   @   12:46 A.M.
VECTOR #2 (1-Sec)……….20 W    @   07:25 P.M.
DAVIS #1……………….20 S    @   05:13 P.M.
DAVIS #2 ………………20 S    @   07:17 P.M.
RMY #1 (Instantaneous)…..19 SSW  @   07:25 P.M.
RMY #2 (Instantaneous)…..21 W    @   07:25 P.M.
MERLIN…………………25 NE
RICHARDS (C5C) (Inst)…..OTS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………14 WSW  @   12:13 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..14      @   12:14 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..14      @   12:03 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………14 SW   @   12:04 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………15 S    @   06:43 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 WSW  @   12:13 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 SW   @   12:03 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………8.0 WSW [192 total miles] VECTOR #1……………….8.7
VECTOR #2……………….8.9
DAVIS #1………………..8.5 WSW
DAVIS #2………………..8.8 WSW
RMY #1………………….8.4 WSW
RMY #2………………….8.9 WSW
RICHARDS (C5C)…………..OTS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE MONTH…………..0.01 DEPARTURE…..-0.79
TOTAL PRECIPITATION FOR THE YEAR (2025)…….21.75 DEPARTURE…..-1.65

————————————————————–

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/…/..          18 WSW VEC1 18 SW  RMY 19

6/6 The low since midnight is 70F, the daily normal low is 55F.

————————————————————–

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 6
HIGH 95F IN 1925
LOW 42F IN 1885, 1894, 1945
PRECIP 3.61 INS IN 2000
PEAK GUST 58 MPH NE IN 2000

RECORDS FOR JUNE 7
HIGH 93F IN 1999
LOW 40F IN 1932
PRECIP 4.01 INS IN 2006
PEAK GUST 58 MPH NE IN 1982

TODAY’S REPORT PREPARED BY: Amanda Joly

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

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Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
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