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Wednesday, May 6, 2026

May 6, 2026

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA WEDNESDAY, MAY 6, 2026 ALL TIMES ARE…

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

WEDNESDAY, MAY 6, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0433E
SUNSET:  1849E

THICKENING CLOUDS AND STILL WARM WITH BUT GUSTY WINDS CONTINUING….

A cold front currently stretched from central New York through
central Pennsylvania is making gradual progress eastward toward
our area. High pressure remains anchored well offshore over the
Atlantic. With the tight pressure gradient between these two
systems, a gusty south-southwest flow continues today keeping
us in a warm and somewhat humid air mass.

Clouds have been thickening during the day with some filtered
sunshine early this morning no longer being seen. A band of
showers have reached central Massachusetts, destined to arrive
at Blue Hill later this afternoon.

Temperatures continue on the warm side, but not nearly as warm
as it was yesterday. Readings reached the upper 60s late this
morning, but has slipped back a bit to the mid 60s with the loss
of the sunshine and continued gusty south wind. Dew point values
have been in the mid 50s all day, so it does feel a bit humid
out there.

Winds continue on the gusty side. A south to south-southwest
wind has been averaging at around 20mph for the day so far.
Gusts have been frequently exceeding 30mph most of the day. The
peak gust so far is 42mph, which occurred before after 11:45am.

Visibility has been limited to between 20-25 miles all day due
to haziness and higher relative humidity levels.

The maximum temperature so far today is 68F degrees, which is
4 degrees above the normal high of 64F. The minimum temperature
since midnight is 55F degrees, which is 10 degrees above the
normal low of 45F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Broken cirrocumulus, broken cirrus, few stratus fractus
all quadrants
Temperature: 58F; Dew Point: 53F; Relative Humidity: 84%
Wind: SSW @ 15G23 kts, peak wind S 31mph at 6:13 A.M.
Sea-level pressure: 1011.6 mb; 29.87 in. Hg: rising, then falling
Visibility: 20 miles, hazy
6-hr Max temp: 58F
6-hr Min temp: 55F
24-hr Precip: 0.00 inches
BHO SA 1155 E180 BKN 250 BKN 20 116/58/53/2015G23/987/
FEW STFRA ALQDS HAZY PK WND 1927/13/ 8/709 50000 10058 20055

10 A.M.
Weather: Broken cirrocumulus, overcast cirrus, few breaks in overcast
distant SE-SSW, few cumulus distant NW-NNW
Temperature: 68F; Dew Point: 55F; Relative Humidity: 62%
Wind: SSW @ 19G30 kts, peak wind S 37mph at 10:29 A.M.
Sea-level pressure: 1011.0 mb; 29.85 in. Hg: falling, then rising
Visibility: 25 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 E200 BKN 250 OVC 25 110/68/55/2019G30/985/
FEW BINOVC DSNT SE-SSW FEW CU DSNT NW-NNW HAZY PK WND 1932/29/
8/209 55006

1 P.M.
Weather: Broken altocumulus, overcast cirrostratus, few cumulus
distant WSW-N
Temperature: 65F; Dew Point: 55F; Relative Humidity: 71%
Wind: SSW @ 16G27 kts, peak wind SSW 37mph at 12:32 P.M.
Sea-level pressure: 1009.4 mb; 29.81 in. Hg: falling, then more slowly
Visibility: 30 miles, hazy
6-hr Max temp: 68F
6-hr Min temp: 58F
6-hr Precip: 0.00 inches
BHO SA 1755 E120 BKN 220 OVC 30 094/65/55/2016G27/981/
FEW CU DSNT WSW-N HAZY PK WND 2034/32/ 8/257 56016 10068 20058

————————————————————–

SUMMARY FOR TUESDAY, MAY 5, 2026

TEMPERATURE (DEGREES F)
MAX…….78   NORMAL…..64
MIN…….49   NORMAL…..45
MEAN……64   NORMAL…..55

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+9
TOTAL DEPARTURE FOR THE MONTH……………………….+2 [+0.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY……………..1  DEPARTURE…….-10
TOTAL HEATING UNITS FOR THE MONTH (MAY)……….53  DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE SEASON………….5889  DEPARTURE…….-55
TOTAL HEATING UNITS LAST SEASON TO DATE……..5427  DEPARTURE……+462

COOLING DEGREE DAYS (SEASON: JAN 2026 THRU DEC 2026)
TOTAL COOLING UNITS FOR YESTERDAY……………..0  DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH (MAY)………..0  DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE SEASON…………….6  DEPARTURE……..+1
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)………..43 SSW  @   04:25 P.M.
VECTOR #1 (1-Sec)……….43 SSW  @   04:25 P.M.
VECTOR #2 (1-Sec)……….42 SSW  @   04:25 P.M.
DAVIS #1……………….47 S    @   03:56 P.M.
DAVIS #2 ………………49 S    @   02:42 P.M.
RMY #1 (Instantaneous)…..45 SSW  @   04:25 P.M.
RMY #2 (Instantaneous)…..47 SSW  @   04:25 P.M.
MERLIN…………………42 SW
RICHARDS (C5C) (Inst)……41 S    @   03:10 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………29 SSW  @   05:43 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..30 SSW  @   04:26 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..30 SSW  @   04:26 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………30 S    @   05:43 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………34 S    @   03:12 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..30 SSW  @   04:26 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..30 SSW  @   04:26 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………28 S    @   03:12 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..18.1 SSW [434 total miles] VECTOR #1………………18.2
VECTOR #2………………18.9
DAVIS #1……………….17.9 SSW
DAVIS #2……………….19.4 SSW
RMY #1…………………17.8 SSW
RMY #2…………………18.9 SSW
RICHARDS (C5C)………….17.2

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH (MAY)……..0.04 DEPARTURE…..-0.59
TOTAL PRECIPITATION FOR THE YEAR (2026)…….13.67 DEPARTURE…..-5.70

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/…/..              26 WNW VEC1 27 NNW RMY 27
5/2  58/45/52/-2/0.04/…/..             29 SSW VEC1 29 SSW RMY 28
5/3  53/41/47/-7/T/…/..                37 NW  VEC1 36 NW  RMY 39
5/4  71/41/56/+2/0.00/…/..             46 SW  VEC1 46 SW  RMY 48
5/5  78/49/64/+9/0.00/…/..             43 SSW VEC1 43 SSW RMY 45

5/6 The low since midnight is 55F, the daily normal low is 45F.

————————————————————–

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 6
HIGH 90F IN 1930
LOW 29F IN 1891
PRECIP 1.04 INCHES IN 1890
SNOWFALL TRACE IN 1917, 1952, 1996
PEAK GUST 65 MPH SSE IN 1989

RECORDS FOR MAY 7
HIGH 93F IN 1930
LOW 33F IN 1970
PRECIP 1.19 INCHES IN 2005
SNOWFALL TRACE IN 1967
PEAK GUST 66e MPH WNW IN 1940

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
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