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Wednesday, August 5, 2026

August 5, 2026

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA WEDNESDAY, AUGUST 5, 2026 ALL TIMES ARE…

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

WEDNESDAY, AUGUST 5, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0441E
SUNSET:  1859E

TYPICAL SUMMER WEATHER WITH WARM TEMPERATURES AND INCREASING
HUMIDITY….

Sunshine mixed with mid and upper level clouds has made for a
decent summer day.

Temperatures have warmed into the mid to upper 80s this
afternoon, so we have to returned to above normal levels. This
is the first day of an extended hot period for the area. In
additions to the warming temperatures, humidity levels have
also been on the increase with the dew point pushing into the
mid 60s today, destined for the oppressive 70s by tomorrow.

Winds on the ligher side during the morning, but have picked
up some this afternoon. A general westerly wind has been
averaging around 10mph for the day so far. The peak gust so
far for the day is 21mph which occurred just after 2pm this
afternoon.

Visibility has been decent today with the view holding between
40-50 miles.

The maximum temperature so far today is 87F, which is 5 degrees
above the normal high of 82F. The minimum temperature since
midnight is 63F, which is 1 degree below the normal low of 64F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Broken cirrocumulus, broken cirrus
Temperature: 71F; Dew Point: 62F; Relative Humidity: 73%
Wind: W @ 8 kts
Sea-level pressure: 1021.9 mb; 30.18 in. Hg: rising steadily
Visibility: 50 miles
6-hr Max temp: 71F
6-hr Min temp: 63F
24-hr Precip: 0.00 inches
BHO SA 1155 E180 BKN 250 BKN 50 219/71/62/2708/018/ 8/009
52011 10071 20063

10 A.M.
Weather: Broken altocumulus, broken cirrus
Temperature: 80F; Dew Point: 66F; Relative Humidity: 62%
Wind: WSW @ 6 kts, wind light
Sea-level pressure: 1022.1 mb; 30.18 in. Hg: falling, then rising
Visibility: 40 miles
3-hr Precip: 0.00 inches
BHO SA 1455 E150 BKN 250 BKN 40 221/80/66/2506/018/ WND LGT/
8/051 53002

1 P.M.
Weather: Broken altocumulus, broken cirrus, few cumulus distant WSW-N
Temperature: 87F; Dew Point: 64F; Relative Humidity: 46%
Wind: WSW @ 8 kts
Sea-level pressure: 1021.4 mb; 30.16 in. Hg: falling, then more rapidly
Visibility: 50 miles
6-hr Max temp: 87F
6-hr Min temp: 71F
6-hr Precip: 0.00 inches
BHO SA 1755 E150 BKN 250 BKN 50 214/87/64/2408/016/
FEW CU DSNT WSW-N/ 8/251 58007 10087 20071

————————————————————–

SUMMARY FOR TUESDAY, AUGUST 4, 2026

TEMPERATURE (DEGREES F)
MAX…….85   NORMAL…..82
MIN…….61   NORMAL…..64
MEAN……73   NORMAL…..73

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………..0
TOTAL DEPARTURE FOR THE MONTH……………………….+4 [+0.8 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 (AUG)………..0  DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE SEASON…………….2  DEPARTURE……..-6
TOTAL HEATING UNITS LAST SEASON TO DATE………..2  DEPARTURE………0

COOLING DEGREE DAYS (SEASON: JAN 2026 THRU DEC 2026)
TOTAL COOLING UNITS FOR YESTERDAY……………..8  DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH (AUG)……….36  DEPARTURE……..+4
TOTAL COOLING UNITS FOR THE SEASON…………..533  DEPARTURE……+114
TOTAL COOLING UNITS LAST SEASON TO DATE………525  DEPARTURE……..+8

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)………..18 W    @   05:03 A.M.
VECTOR #1 (1-Sec)……….18 W    @   05:03 A.M.
VECTOR #2 (1-Sec)……….19 WNW  @   12:18 A.M.
DAVIS #1……………….19 W    @   04:58 A.M.
DAVIS #2 ………………18 WNW  @   12:05 A.M.
RMY #1 (Instantaneous)…..19 WSW  @   02:44 P.M.
RMY #2 (Instantaneous)…..19 W    @   12:05 A.M.
MERLIN…………………18 SW
RICHARDS (C5C) (Inst)……19 WSW  @   02:44 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………15 W    @   04:44 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..14 W    @   04:46 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15 W    @   12:06 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………14 W    @   04:46 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………14 W    @   04:43 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 W    @   04:46 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..14 W    @   12:06 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………13 W    @   04:46 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..8.8 W [211 total miles] VECTOR #1………………9.1
VECTOR #2………………9.5
DAVIS #1……………….9.2 W
DAVIS #2……………….9.4 W
RMY #1…………………9.0 W
RMY #2…………………9.4 W
RICHARDS (C5C)………….9.2

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH (AUG)……..0.71 DEPARTURE…..+0.19
TOTAL PRECIPITATION FOR THE YEAR (2026)…….24.81 DEPARTURE…..-6.41

————————————————————–

PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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

8/1  87/64/76/+3/0.00/…/..             23 SSW VEC1 24 S   RMY 24
8/2  83/68/76/+3/0.01/…/..             29 S   VEC1 28 S   RMY 30
8/3  76/65/71/-2/0.70/…/..             44 SSW VEC1 44 SSW RMY 45 TSTM
8/4  85/61/73/0/0.00/…/..              18 W   VEC1 18 W   RMY 19

8/5 The low since midnight is 63F, the daily normal low is 64F.

————————————————————–

AUGUST DAILY RECORDS TO DATE

NONE.

————————————————————–

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

RECORDS FOR AUGUST 5
HIGH 98F IN 1955
LOW 48F IN 1929,1972
PRECIP 2.97 INCHES IN 1893
PEAK GUST 60e MPH SW 1977

RECORDS FOR AUGUST 6
HIGH 95F IN 1931, 2022
LOW 48F IN 1934
PRECIP 1.47 INCHES IN 1995
PEAK GUST 44e MPH SSW IN 1940

TODAY’S REPORT PREPARED BY: Matt Douglas/Lily Chen

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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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