Tuesday, July 14, 2026

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

TUESDAY, JULY 14, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0420E
SUNSET:  1920E

SUNSHINE THIS MORNING BECOMING VERY FILTERED BY WILDFIRE SMOKE
BY EARLY THIS AFTERNOON…

Skies feature high thin cirrus clouds through most of the
morning allowing for some filtered sunshine. However a band of
wildfire smoke aloft moved over the region by late this morning
into early this afternoon. This smoke is thick enough that it’s
mostly filtering out the sun and has ended the temperature rise
for the time being. The sky also has a bit of orange hue to it
indicating that the smoke layer is fairly thick.

The temperature was rising fairly rapidly through the morning
reaching the mid 80s by late this morning, but as mentioned,
since the smoke layer has overspread the area, readings have
leveled off, and even fallen a bit back to the lower 80s. Dew
point readings have been rising through the day as well, from
the low to mid 60s early this morning to the upper 60s by early
this afternoon.

Winds have been fairly steady today out of the west-southwest.
The average speed for the day so far is around 13mph. The peak
gust so far for the day is 32mph, which occurred after the 1pm
observation.

Visibility has been limited today thanks to haziness. The view
has decreased a bit through the day, in part due to the smoke.
It went from 35 miles early this morning to around 30 miles by
early this afternoon.

The maximum temperature so far today is 84F, which is 2 degrees
above the normal high of 82F. The minimum temperature since
midnight is 67F, which is 3 degrees above the normal low of 64F.

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Today’s Observations:

7 A.M.
Weather: Thin broken cirrus, few altocumulus distant NE-SE-SSW
Temperature: 73F; Dew Point: 64F; Relative Humidity: 73%
Wind: WSW @ 10G20 kts
Sea-level pressure: 1016.5 mb; 30.02 in. Hg: falling, then more slowly
Visibility: 35 miles, hazy
6-hr Max temp: 73F
6-hr Min temp: 67F
24-hr Precip: 0.00 inches
BHO SA 1155 E250 -BKN 35 165/73/64/2510G20/002/ FEW AC DSNT
NE-SE-SSW HAZY/ 8/051 56006 10073 20067

10 A.M.
Weather: Broken cirrus, smoke layer aloft all quadrants
Temperature: 83F; Dew Point: 67F; Relative Humidity: 59%
Wind: W @ 8G16 kts
Sea-level pressure: 1016.0 mb; 30.00 in. Hg: rising, then falling
Visibility: 30 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 E250 BKN 30 160/83/67/2608G16/000/ K LYR ALF ALQDS
HAZY/ 8/001 58005

1 P.M.
Weather: Overcast smoke layer, sun dimly visible
Temperature: 83F; Dew Point: 70F; Relative Humidity: 63%
Wind: WSW @ 13G24 kts
Sea-level pressure: 1013.3 mb; 29.92 in. Hg: falling, then more rapidly
Visibility: 30 miles, hazy
6-hr Max temp: 84F
6-hr Min temp: 73F
6-hr Precip: 0.00 inches
BHO SA 1755 E200 OVC 30 133/83/70/2413G24/992/ OVC K LYR
SUN DMLY VSBL HAZY/ 8/000 58027 10084 20073

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SUMMARY FOR MONDAY, JULY 13, 2026

TEMPERATURE (DEGREES F)
MAX…….86   NORMAL…..82
MIN…….62   NORMAL…..64
MEAN……74   NORMAL…..73

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+1
TOTAL DEPARTURE FOR THE MONTH………………………+54 [+4.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2026 THRU JUN 2027)
TOTAL HEATING UNITS FOR YESTERDAY……………..0  DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH (JUL)………..2  DEPARTURE……..-2
TOTAL HEATING UNITS FOR THE SEASON…………….2  DEPARTURE……..-2
TOTAL HEATING UNITS LAST SEASON TO DATE………..1  DEPARTURE……..+1

COOLING DEGREE DAYS (SEASON: JAN 2026 THRU DEC 2026)
TOTAL COOLING UNITS FOR YESTERDAY……………..9  DEPARTURE……..+1
TOTAL COOLING UNITS FOR THE MONTH (JUL)………150  DEPARTURE…….+53
TOTAL COOLING UNITS FOR THE SEASON…………..389  DEPARTURE……+153
TOTAL COOLING UNITS LAST SEASON TO DATE………323  DEPARTURE…….+66

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)………..30 SW   @   11:47 P.M.
VECTOR #1 (1-Sec)……….30 SSW  @   03:27 P.M.
VECTOR #2 (1-Sec)……….30 SSW  @   03:31 P.M.
DAVIS #1……………….34 S    @   03:26 P.M.
DAVIS #2 ………………31 S    @   03:27 P.M.
RMY #1 (Instantaneous)…..32 SSW  @   03:31 P.M.
RMY #2 (Instantaneous)…..32 SSW  @   03:24 P.M.
MERLIN…………………27 S
RICHARDS (C5C) (Inst)……30 SW   @   04:15 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………20 SW   @   10:49 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..21 SSW  @   03:33 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..23 SSW  @   03:33 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………21 SSW  @   03:33 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………22 SSW  @   03:33 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..21 SSW  @   03:26 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..23 SSW  @   03:33 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………20 SSW  @   03:33 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..12.4 SSW [297 total miles] VECTOR #1………………12.6
VECTOR #2………………13.2
DAVIS #1……………….12.1 SSW
DAVIS #2……………….12.1 SW
RMY #1…………………12.4 SW
RMY #2…………………13.3 SSW
RICHARDS (C5C)………….11.4

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.12
TOTAL PRECIPITATION FOR THE MONTH (JUL)……..2.22 DEPARTURE…..+0.77
TOTAL PRECIPITATION FOR THE YEAR (2026)…….20.88 DEPARTURE…..-7.80

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PRELIMINARY CLIMATE SUMMARY FOR JULY 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

7/1  95/68/82/+11/0.00/704/77            23 WSW VEC1 23 SW  RMY 24
7/2  99/72/86/+15/0.04/822/90            40 W   VEC1 39 W   RMY 45 TSTM
7/3  98/77/88/+16/0.00/803/88            32 WNW VEC1 32 WNW RMY 34 TSTM
7/4  94/73/84/+12/0.01/765/84            29 WNW VEC1 29 WNW RMY 29
7/5  83/69/76/+4/T/355/39                20 SSE VEC1 20 SE  RMY 17
7/6  74/60/67/-5/0.05/009/01             24 E   VEC1 24 E   RMY 24
7/7  65/61/63/-9/2.11/000/00             40 ENE VEC1 39 NE  RMY 40
7/8  83/58/72/-1/0.01/780/86             26 N   VEC1 26 N   RMY 25
7/9  91/65/78/+5/0.00/834/92             29 SW  VEC1 27 SW  RMY 29
7/10 88/69/79/+6/0.00/724/80             21 NE  VEC1 21 NE  RMY 23
7/11 82/66/74/+1/0.00/795/88             20 E   VEC1 20 E   RMY 19
7/12 81/61/71/-2/0.00/884/98             18 ENE VEC1 18 ENE RMY 18
7/13 86/62/74/+1/0.00/…/..             30 SW  VEC1 30 SSW RMY 32

7/14 The low since midnight is 67F, the daily normal low is 64F.

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JULY DAILY RECORDS TO DATE

7/2 RECORD HIGH MAXIMUM TEMPERATURE OF 99F,
BEATING THE PREVIOUS RECORD OF 95F SET IN 1963

7/2 RECORD HIGH MINIMUM TEMPERATURE OF 72F,
THIS TIED THE RECORD WITH 1901, 1913, AND 1963

7/3 RECORD HIGH MINIMUM TEMPERATURE OF 77F,
BEATING THE PREVIOUS RECORD OF 76F SET IN 2002

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

RECORDS FOR JULY 14
HIGH 98F IN 1952
LOW 51F IN 1895, 1937
PRECIP 2.28 INS IN 1948
WIND 110e MPH NW IN 1942 [THUNDERSTORM GUST; RECORD FOR MONTH]

RECORDS FOR JULY 15
HIGH 94F IN 1995
LOW 50F IN 1929, 1930
PRECIP 1.64 INS IN 1896
WIND 71 MPH WNW IN 2002

TODAY’S REPORT PREPARED BY: Matt Douglas