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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, JUNE 23, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0408E
SUNSET: 1925E
OVERCAST WITH MUCH NEEDED OFF AND ON RAIN THROUGH THE DAY….
Rain, which began yesterday, continued off and on through the
night and through the day today. While it’s been great getting
some rain, the amounts here at Blue Hill have paled in comparison
to areas across southern Rhode Island and southern Massachusetts.
2-4″ of rain was observed in those areas. However, here at Blue
Hill, 0.55″ was recorded through 7am this morning with only an
additional 0.05″ falling between 7am and 1pm this afternoon.
Temperatures rose overnight reaching a maximum of 68F around
7am this morning. A frontal boundary that was stuck across
the region slowly sagged southeastward just after 7am with
readings dropping back to the low to mid 60s, which is where
it’s been stuck since. The air has been at or near saturation
all day as one would expect, so that means the dew point has
been in the 60s all day as well.
Winds were gusty overnight, but dropped off quite a bit by
early this morning. Overall the wind has been light through-
out the daylight hours today. A south to south-southwest
wind overnight shifted to the north after the frontal passage
between 7-8am this morning. The average speed for the day so
far is around 9mph. The peak gust of 28mph occurred just before
1:45am this morning.
Visibility has been limited most of the day with the morning
hours spent in the clouds, thus a view of only around 1/8th of
a mile was the theme. By early this afternoon the clouds lifted
and the view increase briefly to around 50 miles, especially
to the west and north, but remained limited to around 10 miles
to the northeast and east.
The maximum temperature so far today is 68F degrees, which is
10 degrees below the normal high of 78F. The minimum temperature
since midnight is 62F degrees, which is 2 degrees above the
normal low of 60F.
————————————————————–
Today’s Observations:
7 A.M.
Weather: Sky obscured, vertical visibility 200ft, light rain showers
Temperature: 68F; Dew Point: 68F; Relative Humidity: 100%
Wind: SW @ 5 kts, wind light
Sea-level pressure: 1011.8 mb; 29.88 in. Hg: falling, then rising
Visibility: 1/8 mile, fog
6-hr Max temp: 68F
6-hr Min temp: 64F
24-hr Precip: 0.55 inches
BHO SA 1155 X W2 1/8RW-F 118/68/68/2205/988/ WND LGT/ 8////
55000 6016/ 70055 10068 20064
10 A.M.
Weather: Sky obscured, vertical visibility 200ft, light rain
Temperature: 63F; Dew Point: 63F; Relative Humidity: 100%
Wind: N @ 5 kts, wind light
Sea-level pressure: 1012.2 mb; 29.89 in. Hg: rising unsteadily
Visibility: 1/8 mile, fog
3-hr Precip: 0.03 inches
BHO SA 1455 X W2 1/8R-F 122/63/63/3505/989/ WND LGT/ 8////
52004 6003/
1 P.M.
Weather: Broken stratocumulus, overcast altostratus, few lower
stratus fractus all quadrants
Temperature: 64F; Dew Point: 63F; Relative Humidity: 98%
Wind: N @ 4 kts, wind light
Sea-level pressure: 1012.0 mb; 29.88 in. Hg: rising, then falling
Visibility: 30 miles, 50 miles WSW-N, 10 miles NE-E, thin fog
6-hr Max temp: 68F
6-hr Min temp: 62F
6-hr Precip: 0.05 inches
BHO SA 1755 E10 BKN 85 OVC 30 120/64/63/3504/988/
FEW LWR STFRA ALQDS THN F ALQDS R-B06E50 VSBY 50 WSW-N 10 NE-E
WND LGT/ 8/62/ 58002 6005/ 10068 20062
————————————————————–
SUMMARY FOR MONDAY, JUNE 22, 2026
TEMPERATURE (DEGREES F)
MAX…….77 NORMAL…..78
MIN…….60 NORMAL…..60
MEAN……69 NORMAL…..69
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………..0
TOTAL DEPARTURE FOR THE MONTH……………………..+113 [+4.9 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY……………..0 DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH (JUN)……….17 DEPARTURE…….-44
TOTAL HEATING UNITS FOR THE SEASON………….6084 DEPARTURE……-121
TOTAL HEATING UNITS LAST SEASON TO DATE……..5665 DEPARTURE……+419
COOLING DEGREE DAYS (SEASON: JAN 2026 THRU DEC 2026)
TOTAL COOLING UNITS FOR YESTERDAY……………..4 DEPARTURE……..-1
TOTAL COOLING UNITS FOR THE MONTH (JUN)………134 DEPARTURE…….+68
TOTAL COOLING UNITS FOR THE SEASON…………..193 DEPARTURE…….+99
TOTAL COOLING UNITS LAST SEASON TO DATE………111 DEPARTURE…….+82
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)………..31 SSE @ 11:12 P.M.*
VECTOR #1 (1-Sec)……….31 SSE @ 11:12 P.M.
VECTOR #2 (1-Sec)……….32 SSE @ 11:04 P.M.
DAVIS #1……………….30 SSE @ 11:22 P.M.
DAVIS #2 ………………34 S @ 10:46 P.M.
RMY #1 (Instantaneous)…..31 SSE @ 11:02 P.M.
RMY #2 (Instantaneous)…..33 SSE @ 11:04 P.M.
MERLIN…………………27 S
RICHARDS (C5C) (Inst)……29 SSE @ 11:12 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………24 SSE @ 11:02 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..22 SSE @ 11:01 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..22 SSE @ 11:17 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………22 SSE @ 11:01 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………21 SSE @ 11:56 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..22 SSE @ 11:02 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..22 SSE @ 11:17 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………21 SSE @ 11:02 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………8.3 SSE [198 total miles]
VECTOR #1……………….9.0
VECTOR #2……………….9.3
DAVIS #1………………..8.8 SSE
DAVIS #2………………..8.7 SSE
RMY #1………………….9.0 S
RMY #2………………….9.4 SSE
RICHARDS (C5C)…………..9.2
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.55 DEPARTURE…..+0.40
TOTAL PRECIPITATION FOR THE MONTH (JUN)……..1.65 DEPARTURE…..-1.89
TOTAL PRECIPITATION FOR THE YEAR (2026)…….18.45 DEPARTURE…..-7.69
————————————————————–
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/606/67 26 ENE VEC1 27 ENE RMY 27
6/2 75/45/60/-2/0.00/680/75 22 NNW VEC1 22 NNW RMY 21
6/3 82/56/69/+7/0.00/880/97 28 S VEC1 28 S RMY 29
6/4 88/57/73/+10/0.00/817/90 23 WNW VEC1 23 SW RMY 23
6/5 87/60/74/+11/0.00/810/89 20 NW VEC1 19 NW RMY 21
6/6 86/64/75/+12/0.09/282/31 46 WSW VEC1 45 WSW RMY 48
6/7 78/55/67/+3/0.26/446/49 38 NE VEC1 38 NE RMY 42
6/8 77/52/65/+1/0.00/904/99 20 SW VEC1 20 SW RMY 21
6/9 83/56/70/+6/0.00/886/97 28 W VEC1 27 W RMY 30
6/10 88/59/74/+9/0.00/686/75 30 SSW VEC1 30 SSW RMY 30
6/11 90/64/77/+12/0.10/631/69 22 WNW VEC1 22 WNW RMY 23
6/12 91/74/83/+18/0.00/412/45 21 WNW VEC1 21 WNW RMY 22
6/13 87/68/78/+12/0.00/769/84 36 NW VEC1 36 NW RMY 38
6/14 88/65/77/+11/0.00/495/54 33 SSW VEC1 32 SSW RMY 34
6/15 82/61/72/+6/0.00/577/63 28 SSW VEC1 28 SSW RMY 28
6/16 77/54/66/-1/0.00/898/98 22 W VEC1 22 W RMY 22
6/17 80/57/69/+2/0.00/697/76 25 SSW VEC1 24 SSW RMY 26
6/18 76/60/68/+1/0.64/193/21 51 S VEC1 52 SSW RMY 54
6/19 78/60/69/+1/0.00/880/96 41 W VEC1 40 W RMY 41
6/20 77/60/69/+1/0.00/807/88 40 WNW VEC1 39 WNW RMY 40 TSTM
6/21 82/58/70/+2/0.00/…/.. 24 WNW VEC1 24 NW RMY 25
6/22 77/60/69/0/0.39/…/.. 31 SSE VEC1 31 SSE RMY 31
6/23 The low since midnight is 62F, the daily normal low is 60F.
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JUNE DAILY RECORDS TO DATE
6/12 NEW RECORD HIGH MINIMUM TEMPERATURE OF 74F;
BEATING OLD RECORD OF 69F SET IN 1942 AND 2017
6/18 RECORD PEAK WIND GUST OF 51 MPH,
BEATING THE OLD RECORD OF 48e MPH SET IN 1943
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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR JUNE 23
HIGH 94F IN 2025
LOW 45F IN 1885
PRECIP 0.76 INS IN 1893
PEAK GUST 63 MPH SE IN 1972 (AGNES)
RECORDS FOR JUNE 24
HIGH 99F IN 2025 [Record for month – Tied with 6/4/1919]
LOW 40F IN 1932
PRECIP 2.80 INS IN 1929
PEAK GUST 54 MPH WNW IN 2010
TODAY’S REPORT PREPARED BY: Matt Douglas
