Tuesday, June 2, 2026

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

TUESDAY, JUNE 2, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0410E
SUNSET:  1915E

A VERY PLEASANT DAY WITH SUNSHINE, SEASONABLE TEMPERATURES, AND A
GENTLE BREEZE….

An area of high pressure centered over south-central Ontario is
gradually building toward the region. A stationary front extends
from coastal Georgia northeastward through the Atlantic well to
the southeast of New England. Weak waves of low pressure are
riding this front off the North Carolina coast. Another weak
area of low pressure is located northeast of Maine over Atlantic
Canada.

Locally, our weather is currently being dominated by the building
high pressure area. As such a very lovely day is in progress with
plenty of sunshine and light wind.

Temperatures once again started on the chilly side early this
morning with a low in the mid 40s! They have rebounded nicely
into early this afternoon with readings reaching the mid 70s!
Dew point values have been generally in the mid 40s through the
day, so humidity levels are very comfortable for this time of
year.

Winds are on the lighter side today as well as variable at times.
Overall however, the dominant wind direction has been north-
northwest so far for the day. The average speed for the day so
far is around 9mph. The peak gust so far for the day is 21mph,
which occurred just after 1am this morning.

Visibility started the day decent at around 60 miles, but it has
decreased during the day as pollen levels increase. The view by
early this afternoon is only around 40 miles.

The maximum temperature so far today is 75F degrees, which is
4 degrees above the normal high of 71F. The minimum temperature
since midnight is 45F degrees, which is 8 degrees below the
normal low of 53F.

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PRELIMINARY STATS FOR MAY 2026

TEMPERATURE, Deg. F
Avg. Max. 68.9 [+2.1] Avg. Min. 49.1 [+0.9] Mean      59.0 [+1.5] 24-hour corrected mean: 58.4
Max. for month: 95F on the 19th
Min. for month: 39F on the 31st

HEATING DEGREE DAYS
Total heating units:    231 [-027] Total for the season:  6067 [-078] Total for last season: 5615

COOLING DEGREE DAYS
Total cooling units:     53 [+028] Total for the season:    59 [+031] Total for last season:   17

PRECIPITATION, Inches
Total: 3.13 [-0.69] Greatest in 24 hrs: 0.89 on the 29th-30th

SNOWFALL, Inches
Total:  0.0 [ 0.0] Greatest in 24 hrs: N/A

WIND, mph
Avg. uncorrected wind speed: 10.6 mph
Avg. corrected wind speed:   11.2 mph
Prevailing wind direction:   South-Southwest [14%] Peak gust and direction:     56 NNE on the 30th

SUNSHINE:
Campbell-Stokes card minutes: 12960 of a possible 26226, or 49%
Astronomical total minutes: 13423 of a possible 27191 or 49%

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Today’s Observations:

7 A.M.
Weather: Clear. few cirrus distant WNW-N-NE
Temperature: 56F; Dew Point: 47F; Relative Humidity: 70%
Wind: NNW @ 8 kts
Sea-level pressure: 1021.9 mb; 30.18 in. Hg: rising, then more rapidly
Visibility: 60 miles
6-hr Max temp: 56F
6-hr Min temp: 45F
24-hr Precip: Trace
BHO SA 1155 CLR 60 219/56/47/3408/018/ FEW CI DSNT WNW-N-NE/
8/001 53012 70000 10056 20045

10 A.M.
Weather: Scattered cirrus,  few cumulus distant WSW-NW
Temperature: 69F; Dew Point: 46F; Relative Humidity: 44%
Wind: N @ 2 kts, wind light and variable
Sea-level pressure: 1021.8 mb; 30.17 in. Hg: rising, then falling
Visibility: 40 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 250 SCT 40 218/69/46/3502/017/ FEW CU DSNT WSW-NW
HAZY WND L/V/ 8/201 58001

1 P.M.
Weather: Scattered cumulus, scattered altocumulus, broken cirrus
Temperature: 74F; Dew Point: 46F; Relative Humidity: 37%
Wind: NW @ 7G16 kts
Sea-level pressure: 1020.1 mb; 30.12 in. Hg: falling, then more rapidly
Visibility: 50 miles, hazy
6-hr Max temp: 75F
6-hr Min temp: 56F
6-hr Precip: 0.00 inches
BHO SA 1755 40 SCT 120 SCT E250 BKN 50 201/74/46/3207G16/012/
HAZY/ 8/254 58017 10075 20056

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SUMMARY FOR MONDAY, JUNE 1, 2026

TEMPERATURE (DEGREES F)
MAX…….60   NORMAL…..71
MIN…….45   NORMAL…..53
MEAN……53   NORMAL…..62

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-9
TOTAL DEPARTURE FOR THE MONTH…………………….…-9 [-9.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….12  DEPARTURE……..+7
TOTAL HEATING UNITS FOR THE MONTH (JUN)……….12  DEPARTURE……..+7
TOTAL HEATING UNITS FOR THE SEASON………….6079  DEPARTURE…….-70
TOTAL HEATING UNITS LAST SEASON TO DATE……..5625  DEPARTURE……+454

COOLING DEGREE DAYS (SEASON: JAN 2026 THRU DEC 2026)
TOTAL COOLING UNITS FOR YESTERDAY……………..0  DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE MONTH (JUN)………..0  DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE SEASON……………59  DEPARTURE…….+29
TOTAL COOLING UNITS LAST SEASON TO DATE……….17  DEPARTURE…….+42

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)………..26 ENE  @   08:15 A.M.
VECTOR #1 (1-Sec)……….27 ENE  @   08:15 A.M.
VECTOR #2 (1-Sec)……….25 ENE  @   07:41 A.M.
DAVIS #1……………….27 E    @   08:15 A.M.
DAVIS #2 ………………23 ENE  @   07:44 A.M.
RMY #1 (Instantaneous)…..27 ENE  @   08:24 A.M.
RMY #2 (Instantaneous)…..26 ENE  @   07:44 A.M.
MERLIN…………………24 ENE
RICHARDS (C5C) (Inst)……25 ENE  @   08:15 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………..…….15 ENE  @   08:45 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15 ENE  @   07:45 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..18 NE   @   09:06 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………17 E    @   09:00 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 E    @   09:06 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..16 E    @   09:00 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..17 NE   @   09:06 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………16 E    @   09:00 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………8.3 ENE [198 total miles] VECTOR #1……………….8.7
VECTOR #2……………….9.3
DAVIS #1………………..9.0 NE
DAVIS #2………………..9.0 ENE
RMY #1………………….8.7 NE
RMY #2………………….9.1 NE
RICHARDS (C5C)…………..9.0

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE MONTH (JUN)…….TRACE DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE YEAR (2026)…….16.80 DEPARTURE…..-5.96

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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/+1/0.22/697/81             28 WNW VEC1 27 WNW RMY 28
5/8  62/40/51/-4/0.00/741/86             33 W   VEC1 33 W   RMY 33
5/9  58/43/51/-5/0.35/000/00             30 SSW VEC1 31 SSW RMY 30
5/10 72/49/61/+5/T/346/40                28 SSW VEC1 28 SSW RMY 27
5/11 62/45/54/-2/T/191/22                26 NNW VEC1 26 NNW RMY 26
5/12 63/42/53/-4/T/835/96                29 WNW VEC1 29 WNW RMY 29
5/13 65/46/56/-1/T/122/14                41 S   VEC1 40 S   RMY 44
5/14 61/48/55/-2/0.26/000/00             37 SSE VEC1 38 SE  RMY 36
5/15 56/47/52/-5/0.04/026/03             18 NE  VEC1 19 NE  RMY 20
5/16 78/47/63/+5/0.00/853/97             33 SW  VEC1 34 SSW RMY 35
5/17 86/56/71/+13/0.05/827/94            39 W   VEC1 38 W   RMY 40
5/18 84/62/73/+15/0.00/829/94            33 SSW VEC1 32 SSW RMY 33
5/19 95/65/80/+22/0.25/716/81            47 NW  VEC1 47 NW  RMY 50 TSTM
5/20 89/65/77/+18/0.00/789/89            39 WNW VEC1 39 WNW RMY 41
5/21 68/52/60/+1/0.01/071/08             22 N   VEC1 22 N   RMY 22
5/22 61/47/54/-5/0.00/498/56             24 ENE VEC1 25 ENE RMY 24
5/23 62/49/56/-3/0.01/277/31             16 NE  VEC1 16 NE  RMY 16
5/24 52/48/50/-10/0.52/000/00            26 ESE VEC1 28 ESE RMY 27
5/25 74/52/63/+3/0.12/000/00             22 WNW VEC1 22 WNW RMY 22
5/26 82/56/69/+9/0.00/727/81             28 SSW VEC1 27 SW  RMY 29
5/27 84/62/73/+13/0.00/611/68            28 N   VEC1 27 NNW RMY 28
5/28 71/54/63/+2/T/666/74                36 NNW VEC1 36 N   RMY 36
5/29 71/50/61/0/0.01/414/46              30 NW  VEC1 31 SE  RMY 32
5/30 55/40/48/-13/0.88/054/06            56 NNE VEC1 53 NNE RMY 56
5/31 69/39/54/-8/0.29/479/53             29 WNW VEC1 29 WNW RMY 30

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MAY DAILY RECORDS TO DATE

5/19 RECORD HIGH MAXIMUM TEMPERATURE OF 95F,
BEATING THE PREVIOUS RECORD OF 91F SET IN 1962

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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/…/..                26 ENE VEC1 27 ENE RMY 27

6/2 The low since midnight is 45F, the daily normal low is 53F.

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JUNE DAILY RECORDS TO DATE

NONE.

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

RECORDS FOR JUNE 2
HIGH 91F IN 1895
LOW 41F IN 1907, 1929
PRECIP 2.36 INS IN 1982
SNOWFALL TRACE IN 1907 (ICE PELLETS)
PEAK GUST 63 MPH NW IN 2000

RECORDS FOR JUNE 3
HIGH 98F IN 1919
LOW 38F IN 1929
PRECIP 2.40 INS 2006
PEAK GUST 47 MPH NW IN 1998

TODAY’S REPORT PREPARED BY: Matt Douglas