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Wednesday, June 10, 2026

June 10, 2026

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA WEDNESDAY, JUNE 10, 2026 ALL TIMES ARE…

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

WEDNESDAY, JUNE 10, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0407E
SUNSET:  1920E

VERY SUMMER-LIKE TODAY WITH VERY WARM AND HUMID CONDITIONS UNDER
FILTERED SUNSHINE….

High pressure is gradually slipping eastward over the western
Atlantic currently centered north of Bermuda. Meanwhile a low
pressure area over southern Ontario has a trailing cold front
attempting to progress toward northern Ohio and northwestern
Pennsylvania. A pre-frontal trough is stretched out from western
New York southward through central Pennsylvania into Maryland
and Virginia.

As the low and associated fronts slowly approach our area,
mainly high clouds have been streaming across the sky today
allowing for filtered sunshine so far for the day. A few
patches of mid level clouds have been observed as well, but
so far have stayed in the distance.

Temperatures continue the warming trend that started yesterday
with readings reaching the mid 80s early this afternoon.
Unfortunately the dew point has risen as well and has been
flirting with the 70F degree mark at times, as a result it
feels quite humid out there today. Heat index values have
pushed around 90F, so it’s definitely a summer-like feel out
there this afternoon.

Winds have been fairly steady through the day. A general
southwest flow has been averaging around 12mph for the day so
far. It has become a bit gusty at times late this morning into
early this afternoon. The peak gust for the day so far is
25mph, which occurred just after 11:30am this morning.

Visibility has been limited today due to haziness. The view
which started the day around 40 miles, worsened with the view
dropping down to around 25-30 miles by late this morning.

The maximum temperature so far today is 86F degrees, which is
12 degrees above the normal high of 74F. The minimum temperature
since midnight is 59F degrees, which is 3 degrees above the
normal low of 56F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Broken cirrus
Temperature: 67F; Dew Point: 60F; Relative Humidity: 77%
Wind: W @ 9 kts
Sea-level pressure: 1014.8 mb; 29.97 in. Hg: rising, then falling
Visibility: 40 miles, hazy
6-hr Max temp: 67F
6-hr Min temp: 59F
24-hr Precip: 0.00 inches
BHO SA 1155 E250 BKN 40 148/67/60/2609/997/ HAZY/
8/001 58001 10067 20059

10 A.M.
Weather: Broken cirrus, few altocumulus distant S-WSW
Temperature: 82F; Dew Point: 68F; Relative Humidity: 61%
Wind: SW @ 7 kts
Sea-level pressure: 1014.0 mb; 29.94 in. Hg: steady, then falling
Visibility: 30 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 E250 BKN 30 140/82/68/2307/994/ FEW AC DSNT S-WSW
HAZY/ 8/051 58008

1 P.M.
Weather: Broken cirrus, few altocumulus distant all quadrants
Temperature: 86F; Dew Point: 68F; Relative Humidity: 53%
Wind: SW @ 10G17 kts
Sea-level pressure: 1011.8 mb; 29.88 in. Hg: falling, then more rapidly
Visibility: 25 miles, hazy
6-hr Max temp: 86F
6-hr Min temp: 67F
6-hr Precip: 0.00 inches
BHO SA 1755 E250 BKN 25 118/86/68/2310G17/988/ FEW AC DSNT ALQDS
HAZY/ 8/051 58022 10086 20067

————————————————————–

SUMMARY FOR TUESDAY, JUNE 9, 2026

TEMPERATURE (DEGREES F)
MAX…….83   NORMAL…..73
MIN…….56   NORMAL…..56
MEAN……70   NORMAL…..64

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+6
TOTAL DEPARTURE FOR THE MONTH………………………+39 [+4.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY……………..0  DEPARTURE……..-3
TOTAL HEATING UNITS FOR THE MONTH (JUN)……….17  DEPARTURE…….-19
TOTAL HEATING UNITS FOR THE SEASON………….6084  DEPARTURE…….-97
TOTAL HEATING UNITS LAST SEASON TO DATE……..5642  DEPARTURE……+442

COOLING DEGREE DAYS (SEASON: JAN 2026 THRU DEC 2026)
TOTAL COOLING UNITS FOR YESTERDAY……………..5  DEPARTURE……..+2
TOTAL COOLING UNITS FOR THE MONTH (JUN)……….38  DEPARTURE…….+19
TOTAL COOLING UNITS FOR THE SEASON……………97  DEPARTURE…….+50
TOTAL COOLING UNITS LAST SEASON TO DATE……….43  DEPARTURE…….+54

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 *=Last of multiple occurrences

F420C (Official)………..28 W    @   03:16 P.M.*
VECTOR #1 (1-Sec)……….27 W    @   08:03 A.M.
VECTOR #2 (1-Sec)……….26 W    @   12:36 P.M.
DAVIS #1……………….26 W    @   08:30 A.M.
DAVIS #2 ………………25 W    @   01:32 P.M.
RMY #1 (Instantaneous)…..30 W    @   08:41 A.M.
RMY #2 (Instantaneous)…..27 SSW  @   08:03 P.M.
MERLIN…………………27 W
RICHARDS (C5C) (Inst)……26 W    @   03:17 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………19 WNW  @   12:39 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..19 WNW  @   12:39 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..20 WNW  @   12:39 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………19 W    @   12:39 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 W    @   08:39 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..18 WNW  @   12:39 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..19 WNW  @   12:39 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………18 WNW  @   12:39 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..12.0 WSW [287 total miles] VECTOR #1………………12.1
VECTOR #2………………12.4
DAVIS #1……………….12.2 WSW
DAVIS #2………………….M
RMY #1…………………12.0 WSW
RMY #2…………………12.3 WSW
RICHARDS (C5C)………….11.8

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE MONTH (JUN)……..0.35 DEPARTURE…..-1.10
TOTAL PRECIPITATION FOR THE YEAR (2026)…….17.15 DEPARTURE…..-6.90

————————————————————–

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  60/45/53/-9/T/606/67                26 ENE VEC1 27 ENE RMY 27
6/2  75/45/60/-2/0.00/680/75             22 NNW VEC1 22 NNW RMY 21
6/3  82/56/69/+7/0.00/880/97             28 S   VEC1 28 S   RMY 29
6/4  88/57/73/+10/0.00/817/90            23 WNW VEC1 23 SW  RMY 23
6/5  87/60/74/+11/0.00/810/89            20 NW  VEC1 19 NW  RMY 21
6/6  86/64/75/+12/0.09/232/31            46 WSW VEC1 45 WSW RMY 48
6/7  78/55/67/+3/0.26/…/..             38 NE  VEC1 38 NE  RMY 42
6/8  77/52/65/+1/0.00/…/..             20 SW  VEC1 20 SW  RMY 21
6/9  83/56/70/+6/0.00/…/..             28 W   VEC1 27 W   RMY 30

6/10 The low since midnight is 59F, the daily normal low is 56F.

————————————————————–

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 10
HIGH 98F IN 2008
LOW 42F IN 1913, 1920
PRECIP 2.51 INCHES IN 1931
PEAK GUST 60e MPH NW IN 1941

RECORDS FOR JUNE 11
HIGH 92F IN 1973, 1984, 1997
LOW 40F IN 1972
PRECIP 2.66 INCHES IN 1922
PEAK GUST 43e MPH S IN 1945

TODAY’S REPORT PREPARED BY: Matt Douglas

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Blue Hill Observatory & Science Center · Legal

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
Part I — Data Use Policy
§ 01

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Effective January 1, 2025 · Blue Hill Observatory & Science Center · Milton, Massachusetts
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