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Friday, May 8, 2026

May 8, 2026

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA FRIDAY, MAY 8, 2026 ALL TIMES ARE…

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

FRIDAY, MAY 8, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0430E
SUNSET:  1852E

ANOTHER BEAUTIFUL SPRING DAY ON THE HILL WITH SLIGHTLY COOLER
TEMPS AND INCREASING CLOUDS….

We started the day with plenty of blue sky and some mid level clouds
and a bit cooler than the previous days. Cloud cover has slowly
increased as the day has progressed. By the 1pm observation we were
nearly overcast.

Temperatures dipped down to 40F during the early morning hours. With
the sunshine and light winds early on, temperatures improved to the
lower 60’s before increase of clouds and wind slowed the temperature
progress. Dew points have remained in the lower 30s today which has
made it a very comfortable day to be outdoors.

Winds have been steady today with a lull in the early morning and
some occasional gusts during the late morning and early afternoon
hours as the temperature rose. Winds have been mostly out of the
west and west-northwest with an average so far today around 10mph.
The peak gust so far is 32mph, which occurred just after 12:11pm
this afternoon.

Visibility has been holding steady at around 60 miles throughout
the day. Pollen has been observed in the area and has prevented
us from having a higher visibility.

The maximum temperature so far today is 61F degrees, which is
4 degrees below the normal high of 65F. The minimum temperature
since midnight is 40F degrees, which is 6 degrees below the normal
low of 46F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Scattered altocumulus
Temperature: 49F; Dew Point: 34F; Relative Humidity: 56%
Wind: WNW @ 3 kts, wind light
Sea-level pressure: 1010.9 mb; 29.85 in. Hg: rising, then more slowly
Visibility: 60 miles
6-hr Max temp: 49F
6-hr Min temp: 40F
24-hr Precip: 0.00 inches
BHO SA 1155 120 SCT 60 109/49/34/2803/985/ WND LGT/ 8/050 51013
10049 20040

10 A.M.
Weather: Scattered stratocumulus
Temperature: 58F; Dew Point: 33F; Relative Humidity: 38%
Wind: W @ 9G16 kts
Sea-level pressure: 1010.2 mb; 29.83 in. Hg: falling, then more slowly
Visibility: 60 miles
3-hr Precip: 0.00 inches
BHO SA 1455 65 SCT 60 102/58/33/2709G16/983/ 8/500 56007

1 P.M.
Weather: Broken altocumulus, overcast cirrostratus, few breaks in
overcast, few stratocumulus
Temperature: 59F; Dew Point: 32F; Relative Humidity: 36%
Wind: WNW @ 14G27 kts, peak wind WNW 32mph at 12:11 P.M
Sea-level pressure: 1009.2 mb; 29.80 in. Hg: falling, then more slowly
Visibility: 60 miles
6-hr Max temp: 61F
6-hr Min temp: 49F
6-hr Precip: 0.00 inches
BHO SA 1755 E85 BKN 220 OVC 60 092/59/32/2814G27/980/ FEW BINOVC ALQDS
FEW SC ALQDS PK WND 2828/11/ 8/557 56010 10061 20049

————————————————————–

SUMMARY FOR THURSDAY, MAY 7, 2026

TEMPERATURE (DEGREES F)
MAX…….65   NORMAL…..65
MIN…….46   NORMAL…..46
MEAN……56   NORMAL…..55

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+1
TOTAL DEPARTURE FOR THE MONTH……………………….+9 [+1.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY……………..9  DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH (MAY)……….66  DEPARTURE…….-12
TOTAL HEATING UNITS FOR THE SEASON………….5902  DEPARTURE…….-63
TOTAL HEATING UNITS LAST SEASON TO DATE……..5439  DEPARTURE……+463

COOLING DEGREE DAYS (SEASON: JAN 2026 THRU DEC 2026)
TOTAL COOLING UNITS FOR YESTERDAY……………..0  DEPARTURE……..-1
TOTAL COOLING UNITS FOR THE MONTH (MAY)………..0  DEPARTURE……..-3
TOTAL COOLING UNITS FOR THE SEASON…………….6  DEPARTURE………0
TOTAL COOLING UNITS LAST SEASON TO DATE………..7  DEPARTURE……..-1

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 WNW  @   05:20 P.M.
VECTOR #1 (1-Sec)……….27 WNW  @   05:20 P.M.
VECTOR #2 (1-Sec)……….30 W    @   04:46 P.M.
DAVIS #1……………….28 W    @   05:22 P.M.
DAVIS #2 ………………29 WNW  @   04:46 P.M.
RMY #1 (Instantaneous)…..28 WNW  @   05:20 P.M.
RMY #2 (Instantaneous)…..33 W    @   04:46 P.M.
MERLIN…………………26 NW
RICHARDS (C5C) (Inst)……27 W    @   04:54 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………19 WNW  @   05:23 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..20 WNW  @   05:23 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..21 WNW  @   05:23 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 W    @   05:23 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………21 WNW  @   05:24 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..19 WNW  @   05:23 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 WNW  @   05:23 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………19 WNW  @   05:23 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..10.2 WNW [245 total miles] VECTOR #1………………11.0
VECTOR #2………………11.7
DAVIS #1……………….11.3 WNW
DAVIS #2……………….10.5 NW
RMY #1…………………10.8 WNW
RMY #2…………………11.3 WNW
RICHARDS (C5C)………….11.3

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.12
TOTAL PRECIPITATION FOR THE MONTH (MAY)……..0.34 DEPARTURE…..-0.54
TOTAL PRECIPITATION FOR THE YEAR (2026)…….14.01 DEPARTURE…..-5.65

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE……0.0
TOTAL SNOWFALL FOR THE MONTH (MAY)…………..0.0 DEPARTURE……0.0
TOTAL SNOWFALL FOR THE SEASON (2025-2026)……81.6 DEPARTURE….+11.9

————————————————————–

PRELIMINARY CLIMATE SUMMARY FOR MAY 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

5/1  63/43/53/0/0.00/769/91              26 WNW VEC1 27 NNW RMY 27
5/2  58/45/52/-2/0.04/127/15             29 SSW VEC1 29 SSW RMY 28
5/3  53/41/47/-7/T/119/14                37 NW  VEC1 36 NW  RMY 39
5/4  71/41/56/+2/0.00/775/91             46 SW  VEC1 46 SW  RMY 48
5/5  78/49/64/+9/0.00/718/84             43 SSW VEC1 43 SSW RMY 45
5/6  68/54/61/+6/0.08/146/17             43 SSW VEC1 42 SSW RMY 44
5/7  65/46/56/+1/0.22/…/..             28 WNW VEC1 27 WNW RMY 28

5/8 The low since midnight is 40F, the daily normal low is 46F.

————————————————————–

MAY DAILY RECORDS TO DATE

NONE.

————————————————————–

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

RECORDS FOR MAY 8
HIGH 89F IN 2000
LOW 29F IN 1956
PRECIP 1.48 INCHES IN 1886
SNOWFALL TRACE IN 1898, 1947
PEAK GUST 68e MPH NNW IN 1943

RECORDS FOR MAY 9
HIGH 93F IN 2000
LOW 31F IN 1947
PRECIP 2.72 INCHES IN 1954
SNOWFALL 5.0 INS IN 1977 (RECORD FOR MAY)
PEAK GUST 70e MPH NE IN 1977

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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