Friday, June 19, 2026

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

FRIDAY, JUNE 19, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0407E
SUNSET:  1924E

BREEZY AND SEASONABLE TODAY WITH INCREASING CLOUDS….

The low that moved through yesterday brought record breaking
wind to Blue Hill and some much needed rain. The total
precipitation was 0.64 inches which helps, but we are still
-1.82 inches for the month and -7.62 inches for the season.
It was nice to see something in the rain gauge that wasn’t
an insect or pollen.

Temperatures have been close to seasonal today, with an
overnight low of 60F and so far a high of 77F. The real
difference though is the dew point values, which have been
in the lower and mid 50s today. Compared to the mid 60s from
yesterday, today feels much more comfortable.

Winds have been out of the west for much of the day, though
the early afternoon saw a slight shift to the west-northwest.
It has been quite breezy throughout the day, but not as gusty
as yesterday. The average speed for the day so far is around
16mph. So far the peak gust for the day is 37mph, which occurred
just before 2pm.

Visibility started around 70 miles this morning which is usually
rare for this time of year. Even so, with the lower dew points
and clear skies we were around 60 miles for the remainder of the
day today.

The maximum temperature so far today is 77F degrees, which is
1 degree above the normal high of 76F. The minimum temperature
since midnight is 60F degrees, which is 1 degree above the
normal low of 59F.

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Today’s Observations:

7 A.M.
Weather: Broken cirrostratus/cirrus, few altocumulus WSW-NNW
Temperature: 66F; Dew Point: 56F; Relative Humidity: 70%
Wind: W @ 11G20 kts
Sea-level pressure: 1002.8 mb; 29.61 in. Hg: rising, then more slowly
Visibility: 70 miles
6-hr Max temp: 66F
6-hr Min temp: 60F
24-hr Precip: 0.64 inches
BHO SA 1155 E220 BKN 70 028/66/56/2611G20/961/ FEW AC WSW-NNW/ 8/056
51008 6000/ 70064 10066 20060

10 A.M.
Weather: Scattered altocumulus, broken cirrostratus/cirrus
Temperature: 71F; Dew Point: 55F; Relative Humidity: 56%
Wind: W @ 15G32 kts, peak wind W 37mph at 9:47 A.M.
Sea-level pressure: 1003.2 mb; 29.62 in. Hg: steady, then rising
Visibility: 60 miles
3-hr Precip: 0.00 inches
BHO SA 1455 80 SCT E220 BKN 60 032/71/55/2715G32/962/ PK WND 2832/47/
8/056 53004

1 P.M.
Weather: Scattered cumulus, scattered cirrus
Temperature: 76F; Dew Point: 57F; Relative Humidity: 51%
Wind: WNW @ 20G27 kts, peak wind WNW 31mph at 12:49 P.M.
Sea-level pressure: 1002.5 mb; 29.60 in. Hg: falling, then more rapidly
Visibility: 60 miles
6-hr Max temp: 77F
6-hr Min temp: 66F
6-hr Precip: 0.00 inches
BHO SA 1755 55 SCT 250 SCT 60 025/76/57/2920G27/960/ PK WND 3027/49/
8/201 58007 10077 20066

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SUMMARY FOR THURSDAY, JUNE 18, 2026

TEMPERATURE (DEGREES F)
MAX…….76   NORMAL…..76
MIN…….60   NORMAL…..59
MEAN……68   NORMAL…..67

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+1
TOTAL DEPARTURE FOR THE MONTH……………………..+109 [+5.9 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY……………..0  DEPARTURE……..-2
TOTAL HEATING UNITS FOR THE MONTH (JUN)……….17  DEPARTURE…….-38
TOTAL HEATING UNITS FOR THE SEASON………….6084  DEPARTURE……-116
TOTAL HEATING UNITS LAST SEASON TO DATE……..5665  DEPARTURE……+419

COOLING DEGREE DAYS (SEASON: JAN 2026 THRU DEC 2026)
TOTAL COOLING UNITS FOR YESTERDAY……………..3  DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE MONTH (JUN)………117  DEPARTURE…….+69
TOTAL COOLING UNITS FOR THE SEASON…………..176  DEPARTURE……+100
TOTAL COOLING UNITS LAST SEASON TO DATE……….65  DEPARTURE……+111

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)………..51 S    @   01:17 P.M.
VECTOR #1 (1-Sec)……….52 SSW  @   01:14 P.M.
VECTOR #2 (1-Sec)……….51 S    @   01:39 P.M.
DAVIS #1……………….60 S    @   01:18 P.M.
DAVIS #2 ………………66 S    @   12:16 P.M.
RMY #1 (Instantaneous)…..54 SSW  @   01:14 P.M.
RMY #2 (Instantaneous)…..57 S    @   01:36 P.M.
MERLIN…………………47 S
RICHARDS (C5C) (Inst)……53 S    @   01:37 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………40 SSW  @   01:48 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..36 SSW  @   01:48 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..40 S    @   01:40 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………37 S    @   01:48 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………46 S    @   01:40 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..35 S    @   01:40 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..40 S    @   01:40 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………34 S    @   01:40 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..15.7 S [376 total miles] VECTOR #1………………16.5
VECTOR #2………………18.1
DAVIS #1……………….16.1 S
DAVIS #2………………….M
RMY #1…………………16.2 SSW
RMY #2…………………18.1 SSW
RICHARDS (C5C)………….15.9

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.64 DEPARTURE…..+0.48
TOTAL PRECIPITATION FOR THE MONTH (JUN)……..1.10 DEPARTURE…..-1.82
TOTAL PRECIPITATION FOR THE YEAR (2026)…….17.90 DEPARTURE…..-7.62

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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/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/+12/0.09/232/31            46 WSW VEC1 45 WSW RMY 48
6/7  78/55/67/+3/0.26/…/..             38 NE  VEC1 38 NE  RMY 42
6/8  77/52/65/+1/0.00/…/..             20 SW  VEC1 20 SW  RMY 21
6/9  83/56/70/+6/0.00/…/..             28 W   VEC1 27 W   RMY 30
6/10 88/59/74/+9/0.00/…/..             30 SSW VEC1 30 SSW RMY 30
6/11 90/64/77/+12/0.10/…/..            22 WNW VEC1 22 WNW RMY 23
6/12 91/74/83/+18/0.00/…/..            21 WNW VEC1 21 WNW RMY 22
6/13 87/68/78/+12/0.00/…/..            36 NW  VEC1 36 NW  RMY 38
6/14 88/65/77/+11/0.00/…/..            33 SSW VEC1 32 SSW RMY 34
6/15 82/61/72/+6/0.00/…/..             28 SSW VEC1 28 SSW RMY 28
6/16 77/54/66/-1/0.00/…/..             22 W   VEC1 22 W   RMY 22
6/17 80/57/69/+2/0.00/…/..             25 SSW VEC1 24 SSW RMY 26
6/18 76/60/68/+1/0.64/…/..             51 S   VEC1 52 SSW RMY 54

6/19 The low since midnight is 60F, the daily normal low is 59F.

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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 19
HIGH 93F IN 2024
LOW 40F IN 1920
PRECIP 3.92 INS 1922
PEAK GUST 66e MPH NW IN 1940

RECORDS FOR JUNE 20
HIGH 94F IN 1953, 2024
LOW 41F IN 1918
PRECIP 2.61 INS 1945
PEAK GUST 63 MPH NE IN 1967, SSW IN 2010

TODAY’S REPORT PREPARED BY: Amanda Joly