Saturday, June 28, 2025
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SATURDAY, JUNE 28, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0410E
SUNSET: 1925E
COOL AND DAMP AS LOW CLOUDS HANG AROUND….
Low clouds have filled the sky all day today, with light drizzle and
fog to boot. So far, the rainfall accumulation for today is pretty
meager at only 0.03″.
Temperatures are on the cool side and are struggling to rise. The low
this morning was 58F, and so far we have only reached the mid 60s.
Winds are light, with flow now out of the south-southeast. Speeds
are averaging around 8mph. The peak gust to this point is about 20mph,
occurring just after 4:30am this morning.
Visibility was better at the first observation, when we could see 20
miles. Since then, the cloud base has lowered. With dense fog, the
view now is only 1/16 of a mile.
The maximum temperature for today is 67F degrees, which is 12 degrees
below the normal high of 79F. The minimum temperature since midnight
is 58F degrees, which is 3 degrees below the normal low of 61F.
————————————————————–
Today’s Observations:
7 A.M.
Weather: Overcast stratus
Temperature: 59F; Dew Point: 57F; Relative Humidity: 93%
Wind: S @ 7 kts
Sea-level pressure: 1020.6 mb; 30.14 in. Hg: falling unsteadily
Visibility: 20 miles, thin fog all quadrants
6-hr Max temp: 61F
6-hr Min temp: 58F
24-hr Precip: Trace
BHO SA 1155 E10 OVC 20 206/59/57/1707/014/ THN F ALQDS/ 8/6// 57006
70000 10061 20058
10 A.M.
Weather: Sky obscured, vertical visibility 200ft, very light drizzle
Temperature: 62F; Dew Point: 61F; Relative Humidity: 99%
Wind: SE @ 3 kts, wind light
Sea-level pressure: 1019.5 mb; 30.11 in. Hg: steady, then falling
Visibility: 1/8 miles, fog
3-hr Precip: 0.02 inches
BHO SA 1455 X W2 1/8L-F 195/62/61/1303/011/ PCPN VRY LGT WND LGT/
8//// 58011 6002/
1 P.M.
Weather: Sky obscured, vertical visibility 200ft, very light drizzle
Temperature: 67F Dew Point: 67F; Relative Humidity: 100%
Wind: S @ 7 kts
Sea-level pressure: 1017.5 mb; 30.05 in. Hg: falling unsteadily
Visibility: 1/16 mile, fog
6-hr Max temp: 67F
6-hr Min temp: 59F
6-hr Precip: 0.03 inches
BHO SA 1755 X W2 1/16L-F 175/67/67/1707/005/ PCPN VRY LGT/ 8//// 57020
6003/ 10067 20059
————————————————————–
SUMMARY FOR FRIDAY, JUNE 27, 2025
TEMPERATURE (DEGREES F)
MAX…….75 NORMAL…..79
MIN…….58 NORMAL…..61
MEAN……67 NORMAL…..70
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-3
TOTAL DEPARTURE FOR THE MONTH………………………+83 [+2.9 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025)
TOTAL HEATING UNITS FOR YESTERDAY……………..0 DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH…………….50 DEPARTURE…….-14
TOTAL HEATING UNITS FOR THE SEASON………….5665 DEPARTURE……-544
TOTAL HEATING UNITS LAST SEASON TO DATE……..5391 DEPARTURE……+274
COOLING DEGREE DAYS (SEASON JAN 2025 THRU DEC 2025)
TOTAL COOLING UNITS FOR YESTERDAY……………..2 DEPARTURE……..-4
TOTAL COOLING UNITS FOR THE MONTH……………160 DEPARTURE…….+67
TOTAL COOLING UNITS FOR THE SEASON…………..177 DEPARTURE…….+57
TOTAL COOLING UNITS LAST SEASON TO DATE………166 DEPARTURE…….+11
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
F420C (Official)……….E22 S @ 11:26 P.M.
VECTOR #1 (1-Sec)……….22 S @ 11:26 P.M.
VECTOR #2 (1-Sec)……….22 S @ 11:05 P.M.
DAVIS #1……………….23 S @ 11:26 P.M.
DAVIS #2 ………………29 S @ 11:05 P.M.
RMY #1 (Instantaneous)…..22 S @ 11:05 P.M.
RMY #2 (Instantaneous)…..23 S @ 11:05 P.M.
MERLIN…………………21 S
RICHARDS (C5C) (Inst)…..OTS
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………18 SSW @ 11:22 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16 @ 11:27 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..18 @ 11:06 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………15 E @ 01:06 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………21 S @ 11:06 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 S @ 11:27 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 S @ 11:06 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………7.2 SE [172 total miles]
VECTOR #1……………….7.9
VECTOR #2……………….8.3
DAVIS #1………………..7.8 ESE
DAVIS #2………………..8.2 SE
RMY #1………………….7.7 ESE
RMY #2………………….8.3 ESE
RICHARDS (C5C)…………..OTS
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH…………..1.46 DEPARTURE…..-2.78
TOTAL PRECIPITATION FOR THE YEAR (2025)…….23.20 DEPARTURE…..-3.64
————————————————————–
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 63/47/55/-7/0.01/588/65 40 W VEC1 40 W RMY 42
6/2 70/48/59/-3/T/780/86 25 WNW VEC1 25 WSW RMY 26
6/3 79/50/65/+3/0.00/853/94 23 SSW VEC1 23 SSW RMY 21
6/4 84/58/71/+8/0.00/708/78 26 SW VEC1 27 SW RMY 28
6/5 93/61/77/+14/0.00/819/90 18 WSW VEC1 18 SW RMY 19
6/6 81/63/72/+9/0.00/382/42 26 ENE VEC1 27 NE RMY 27
6/7 71/60/66/+2/0.95/000/00 26 NE VEC1 26 NE RMY 25 TSTM
6/8 67/55/61/-3/0.00/347/38 22 ENE VEC1 21 ENE RMY 22
6/9 61/55/58/-6/0.01/000/00 20 E VEC1 21 E RMY 20
6/10 62/54/58/-7/0.20/000/00 21 W VEC1 20 W RMY 20
6/11 81/58/70/+5/0.00/850/93 32 WSW VEC1 32 WSW RMY 33
6/12 85/64/75/+10/0.00/814/89 47 WNW VEC1 47 WNW RMY 49
6/13 76/57/67/+1/T/631/69 20 E VEC1 20 E RMY 20
6/14 58/54/56/-10/0.09/000/00 24 NE VEC1 24 NE RMY 24
6/15 67/53/60/-6/0.00/449/49 18 E VEC1 18 E RMY 17
6/16 73/52/63/-4/0.00/641/70 20 SE VEC1 20 ESE RMY 20
6/17 74/57/66/-1/0.12/028/03 22 S VEC1 22 S RMY 23
6/18 75/63/69/+2/0.02/018/02 22 SSW VEC1 23 SSW RMY 23
6/19 90/66/78/+10/0.00/523/57 31 SSW VEC1 31 SSW RMY 31
6/20 81/66/74/+6/0.00/853/93 52 WNW VEC1 52 WNW RMY 54
6/21 86/61/74/+6/0.00/871/95 22 NW VEC1 22 NW RMY 21
6/22 91/68/80/+11/0.03/477/52 32 W VEC1 32 W RMY 32
6/23 94/71/83/+14/0.00/807/88 22 SSW VEC1 22 SSW RMY 22
6/24 99/76/88/+19/0.00/880/96 28 W VEC1 27 W RMY 26
6/25 93/76/85/+15/0.00/824/90 20 NW VEC1 20 NW RMY 20
6/26 77/58/68/-2/0.03/…/.. 30 E VEC1 30 E RMY 29
6/27 75/58/67/-3/0.00/…/.. 22 S VEC1 22 S RMY 22
6/28 The low since midnight is 58F, the daily normal low is 61F.
————————————————————–
JUNE DAILY RECORDS TO DATE
6/23 RECORD HIGH MAXIMUM TEMPERATURE OF 94F,
BEATING THE PREVIOUS RECORD OF 93F SET IN 1888
6/24 RECORD HIGH MINIMUM TEMPERATURE OF 76F,
BEATING THE PREVIOUS RECORD OF 70F SET IN 1909
6/24 RECORD HIGH MAXIMUM TEMPERATURE OF 99F,
BEATING THE PREVIOUS RECORD OF 91F SET IN 1914, 1976, 2013
THIS ALSO TIED THE HIGHEST JUNE TEMPERATURE WITH JUNE 4 1919
6/25 RECORD HIGH MINIMUM TEMPERATURE OF 76,
BEATING THE PREVIOUS RECORD OF 71F SET IN 1909
6/25 RECORD HIGH MAXIMUM TEMPERATURE OF 93F,
TIED WITH PREVIOUS OCCURRENCES IN 1943, 1980, 2005
————————————————————–
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR JUNE 28
HIGH 95F IN 1991
LOW 47F IN 1970
PRECIP 3.27 INS IN 2020
PEAK GUST 52 MPH WSW IN 1993
RECORDS FOR JUNE 29
HIGH 95F IN 2021
LOW 42F IN 1919
PRECIP 1.60 INS IN 1889
PEAK GUST 49 MPH S IN 1957
TODAY’S REPORT PREPARED BY: Joshua Polen
