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Saturday, July 11, 2026

July 11, 2026

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SATURDAY, JULY 11, 2026 ALL TIMES ARE…

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

SATURDAY, JULY 11, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0418E
SUNSET:  1921E

MORE SEASONABLE TODAY WITH LOWER DEW POINTS, LIGHT WINDS SHIFT
FROM NORTHERLY TO EASTERLY BY AFTERNOON…

Skies were mostly cloudy today with some clearing by the early
afternoon. Plenty of fair weather cumulus clouds were observed
along with some cirrus throughout the day. It’s been a typical
summer day but with much lower dew points than yesterday. This
difference has made being outdoors much more tolerable today.

Temperatures have been more seasonable today, with an overnight
low of 66F. Temperatures increased to the low 80’s by the early
afternoon hours which is just about normal for this time of year.
Dew points have held steady in the upper 50’s and low 60’s for
much of the day.

The wind has been on the light side today, with a north-north easterly
flow during the overnight. Winds have been more easterly since the
mid morning hours. The average speed for the day so far is around
8mph. The peak gust so far for the day is 19mph, which occurred
at 8:30am this morning.

Visibility has held steady at 35 miles throughout the day due to
hazy conditions.

The maximum temperature so far today is 81F, which is 1 degree
below the normal high of 82F. The minimum temperature since
midnight is 66F, which is 2 degrees above the normal low of 64F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Scattered altocumulus, broken cirrus
Temperature: 73F; Dew Point: 61F; Relative Humidity: 66%
Wind: NNE @ 6 kts, wind light
Sea-level pressure: 1015.2 mb; 29.98 in. Hg: rising, then more slowly
Visibility: 35 miles, hazy
6-hr Max temp: 73F
6-hr Min temp: 66F
24-hr Precip: 0.00 inches
BHO SA 1155 80 SCT E250 BKN 35 152/73/61/0206/998/ HAZY WND LGT/
8/051 51007 10073 20066

10 A.M.
Weather: Scattered cumulus, scattered cirrus
Temperature: 78F; Dew Point: 58F; Relative Humidity: 58%
Wind: E @ 6 kts, wind light
Sea-level pressure: 1016.7 mb; 30.02 in. Hg: rising, then more slowly
Visibility: 35 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 E250 BKN 35 167/78/58/0906/002/ HAZY WND LGT/ 8/201 51015

1 P.M.
Weather: Scattered cumulus, scattered cirrus
Temperature: 81F; Dew Point: 58F; Relative Humidity: 45%
Wind: ENE @ 5 kts, wind light
Sea-level pressure: 1016.2 mb; 30.01 in. Hg: steady, then falling
Visibility: 35 miles, hazy
6-hr Max temp: 81F
6-hr Min temp: 73F
6-hr Precip: 0.00 inches
BHO SA 1755 40 SCT 250 SCT 35 162/81/58/0605/001/ HAZY WND LGT/
8/201 58005 10081 20073
————————————————————–

SUMMARY FOR FRIDAY, JULY 10, 2026

TEMPERATURE (DEGREES F)
MAX…….88   NORMAL…..82
MIN…….69   NORMAL…..64
MEAN……79   NORMAL…..73

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+6
TOTAL DEPARTURE FOR THE MONTH………………………+54 [+5.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2026 THRU JUN 2027)
TOTAL HEATING UNITS FOR YESTERDAY……………..0  DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH (JUL)………..2  DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE SEASON…………….2  DEPARTURE……..-1
TOTAL HEATING UNITS LAST SEASON TO DATE………..0  DEPARTURE……..+2

COOLING DEGREE DAYS (SEASON: JAN 2026 THRU DEC 2026)
TOTAL COOLING UNITS FOR YESTERDAY…………….14  DEPARTURE……..+6
TOTAL COOLING UNITS FOR THE MONTH (JUL)………126  DEPARTURE…….+53
TOTAL COOLING UNITS FOR THE SEASON…………..365  DEPARTURE……+153
TOTAL COOLING UNITS LAST SEASON TO DATE………298  DEPARTURE…….+67

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)………..21 NE   @   03:51 P.M.
VECTOR #1 (1-Sec)……….21 NE   @   03:51 P.M.
VECTOR #2 (1-Sec)……….21 NE   @   03:51 P.M.
DAVIS #1……………….20 ENE  @   03:51 P.M.
DAVIS #2 ………………20 ENE  @   03:51 P.M.
RMY #1 (Instantaneous)…..23 SW   @   12:02 A.M.
RMY #2 (Instantaneous)…..21 NE   @   03:51 P.M.
MERLIN…………………21 ENE
RICHARDS (C5C) (Inst)……20 NE   @   03:51 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………15 SW   @   12:01 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15 SW   @   12:01 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16 SW   @   12:02 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………15 SW   @   12:01 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………15 SW   @   12:02 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 SW   @   12:02 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 SW   @   12:02 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………14 WNW  @   01:20 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………8.3 NW [199 total miles] VECTOR #1……………….8.8
VECTOR #2……………….9.0
DAVIS #1………………..8.8 WNW
DAVIS #2………………..7.8 WNW
RMY #1………………….8.8 W
RMY #2………………….8.9 W
RICHARDS (C5C)…………..9.0

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.12
TOTAL PRECIPITATION FOR THE MONTH (JUL)……..2.22 DEPARTURE…..+1.12
TOTAL PRECIPITATION FOR THE YEAR (2026)…….20.88 DEPARTURE…..-7.45

————————————————————–

PRELIMINARY CLIMATE SUMMARY FOR JULY 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

7/1  95/68/82/+11/0.00/…/..            23 WSW VEC1 23 SW  RMY 24
7/2  99/72/86/+15/0.04/…/..            40 W   VEC1 39 W   RMY 45 TSTM
7/3  98/77/88/+16/0.00/…/..            32 WNW VEC1 32 WNW RMY 34 TSTM
7/4  94/73/84/+12/0.01/…/..            29 WNW VEC1 29 WNW RMY 29
7/5  83/69/76/+4/T/…/..                20 SSE VEC1 20 SE  RMY 17
7/6  74/60/67/-5/0.05/…/..             24 E   VEC1 24 E   RMY 24
7/7  65/61/63/-9/2.11/…/..             40 ENE VEC1 39 NE  RMY 40
7/8  83/58/72/-1/0.01/…/..             26 N   VEC1 26 N   RMY 25
7/9  91/65/78/+5/0.00/…/..             29 SW  VEC1 27 SW  RMY 29
7/10 88/69/79/+6/0.00/…/..             21 NE  VEC1 21 NE  RMY 23

7/11 The low since midnight is 66F, the daily normal low is 64F.

————————————————————–

JULY DAILY RECORDS TO DATE

7/2 RECORD HIGH MAXIMUM TEMPERATURE OF 99F,
BEATING THE PREVIOUS RECORD OF 95F SET IN 1963

7/2 RECORD HIGH MINIMUM TEMPERATURE OF 72F,
THIS TIED THE RECORD WITH 1901, 1913, AND 1963

7/3 RECORD HIGH MINIMUM TEMPERATURE OF 77F,
BEATING THE PREVIOUS RECORD OF 76F SET IN 2002

————————————————————–

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

RECORDS FOR JULY 11
HIGH 98F IN 1911
LOW 49F IN 1890
PRECIP 1.87 INS IN 1959
WIND 53 MPH NW IN 1988

RECORDS FOR JULY 12
HIGH 96F IN 1908
LOW 48F IN 1945
PRECIP 1.43 INS IN 1975
WIND 48e MPH SSW IN 1944

TODAY’S REPORT PREPARED BY: Amanda Joly

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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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§ 03

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