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Saturday, June 26, 2021

June 26, 2021

BLUE HILL METEOROLOGICAL OBSERVATORYMILTON, MASSACHUSETTSELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SATURDAY, JUNE 26, 2021ALL TIMES ARE IN EASTERN STANDARD…

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

SATURDAY, JUNE 26, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0409E
SUNSET:  1925E

MOSTLY CLOUDY WITH THE WIND PICKING UP IN THE
AFTERNOON HOURS….

Today we are dealing with high humidity and mostly
cloudy skies. There is a significant breeze from the
southwest that gives some relief from a 70 degree dew
point. Visibility is limited to 40 miles at most,
being slightly lower due to a fog this morning that
seemed to hang around for most of the day. Humidity
is holding between 70% and 80%, making it a less than
favorable day for a hike.  

Wind speeds are currently 20 mph, with frequent gusts around
30 mph. Pressure is on a steady drop, and building cumulus
can be seen across the sky. Showers to the west are being
seen.  

The high temperature so far today is 81F, this is 3 degrees
above the normal maximum of 78F. The low temperature so
far today is 61F, which is a degree above the normal
minimum of 60F.

Today’s Observations:

7 A.M.
Weather: Overcast stratocumulus
Temperature: 68F; Dew Point: 66F; Relative Humidity: 92%
Wind: SSW @ 11 kts
Sea-level pressure: 30.28 in. Hg; rising steadily
Visibility: 30 miles, thin fog
6-hr Max temp: 68F
6-hr Min temp: 61F
24-hr Precip: Trace
BHO SA 1155 15 OVC 30 255/68/66/2111/028/ THN F ALQDS/ 8/8//
51008 70000 10068 20061

10 A.M.
Weather: Broken stratocumulus and cirrostratus
Temperature: 78F; Dew Point: 70F; Relative Humidity: 77%
Wind: SSW @ 12G22 kts
Sea-level pressure: 30.26 in Hg; falling steadily
Visibility: 40 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 20 BKN 250 BKN 40 249/78/70/2112G22/026/ 8/801
58006

1 P.M.
Weather: Broken stratocumulus and cirrus, breaks in
overcast to the NE
Temperature: 78F, Dew point: 69F; Relative Humidity: 74%
Wind: SSW @ 18G26 kts, peak of 30 mph SSW at 12:51 P.M.
Sea-level pressure: 30.23 in Hg; falling steadily
Visibility: 40 miles
6-hr Max temp: 81F
6-hr Min temp: 68F
6-hr Precip: 0.00 ins.
BHO SA 1755 30 BKN 250 BKN 40 238/78/69/2018G26/023/ BINOVC
NE PK WND 2126/51/ 8/801 58011 10081 20068

SUMMARY FOR FRIDAY, JUNE 25, 2021

TEMPERATURE (DEGREES F)
MAX…….71     NORMAL…..78
MIN…….57     NORMAL…..60
MEAN……64     NORMAL…..69

DEPARTURE FROM 30-YEAR (1981-2010) NORMAL……..-5
TOTAL DEPARTURE FOR THE MONTH………………..+95 [+3.6 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL THRU JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………… 1  DEPARTURE……..0
TOTAL HEATING UNITS FOR THE MONTH……………19  DEPARTURE……-51
TOTAL HEATING UNITS FOR THE SEASON…………5597  DEPARTURE…..-775
TOTAL HEATING UNITS LAST SEASON TO DATE…….5852  DEPARTURE…..-255

COOLING DEGREE DAYS (SEASON JAN THRU DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………… 0  DEPARTURE…….-5
TOTAL COOLING UNITS FOR THE MONTH…………..125  DEPARTURE……+48
TOTAL COOLING UNITS FOR THE SEASON………….154  DEPARTURE……+53
TOTAL COOLING UNITS LAST SEASON TO DATE……..157  DEPARTURE…….-3

PEAK WIND GUST (MPH):
                     420C/Official…………..23 S   @  9:51 P.M.
                     AEROVANE (south tower)…..23 S   @ 10:42 P.M.
                     ASOS…………………..22 S   @  9:50 P.M.
                     VECTOR #1………………23     @ 11:55 P.M.
                     VECTOR #2 (south tower)….23     @  9:49 P.M.
                     DAVIS #1……………….20 SSW @ 10:03 P.M.
                     DAVIS #2 (south tower)…..24 SSE @  8:38 P.M.
                     RMY……………………23     @  9:49 P.M.
                     MERLIN…………………23

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………16 S   @ 11:58 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….16 S   @ 11:57 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..16     @ 11:55 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………15 E   @  4:08 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………17 S   @ 10:39 P.M.
MAXIMUM 2-MINUTE RMY AVERAGE………………..16 SSW @ 11:56 P.M.

AVERAGE WIND SPEED AND DIRECTION:
                     CONTACTING/OFFICIAL…… 7.8 ENE [188 total miles]                     ASOS………………… 8.0
                     VECTOR #1……………. 8.3
                     DAVIS #1…………….. 8.2 ESE
                     DAVIS #2…………….. 8.4 E
                     RMY…………………. 7.8 SE

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……TRACE DEPARTURE…..-0.12
                             ASOS………….0.00
TOTAL PRECIPITATION FOR THE MONTH………….2.18  DEPARTURE….-1.56
                             ASOS………….2.06
TOTAL PRECIPITATION FOR THE YEAR………….22.84  DEPARTURE….-3.56
                              ASOS………..22.92

PRELIMINARY CLIMATE SUMMARY FOR JUNE CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system gust
RMY:  R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M:    Missing data

06/01   74/50/62/0/0.00/425/47            20 WSW  AERO 24 WSW  RMY 22
06/02   80/55/68/+6/0.00/553/61           28 S    AERO 25 S    RMY 28
06/03   73/56/65/+3/0.01/073/08           29 SSW  AERO 29 SSW  RMY 29
06/04   77/61/69/+6/0.02/054/06           23 SW   AERO 25 WSW  RMY 25 TSTM
06/05   87/60/74/+11/0.00/801/88          32 SSW  AERO 37 SSW  RMY 35
06/06   91/69/80/+17/0.00/819/90          30 WSW  AERO 31 WSW  RMY 32
06/07   92/69/81/+17/0.00/838/92          31 SSW  AERO 35 SSW  RMY 34
06/08   92/69/81/+17/0.06/456/50          24 WSW  AERO 25 WSW  RMY 27 TSTM
06/09   88/70/79/+15/0.02/530/58          21 N    AERO 23 NNW  RMY 23
06/10   70/53/62/-3/0.00/795/87           28 NE   AERO 28 NE   RMY 28
06/11   70/51/61/-4/0.13/411/45           21 SSE  AERO 22 SSE  RMY 22
06/12   72/53/63/-2/0.43/430/47           20 WSW  AERO 18 WSW  RMY 20
06/13   82/56/69/+4/0.00/860/94           26 SSW  AERO 29 SSW  RMY 29
06/14   65/56/61/-5/0.63/027/03           28 S    AERO 30 SSE  RMY 29
06/15   77/61/69/+3/T/357/39              18 NE   AERO 20 NE   RMY 18 TSTM
06/16   73/56/65/-1/0.00/769/84           27 NNW  AERO 31 NNW  RMY 27
06/17   77/52/65/-2/0.00/880/96           21 WNW  AERO 21 NW   RMY 23
06/18   82/56/69/+2/T/789/86              26 WSW  AERO 28 WSW  RMY 30
06/19   86/63/75/+8/0.09/504/55           30 SW   AERO 32 SW   RMY 32
06/20   85/63/74/+6/0.00/816/89           24 S    AERO 25 SSW  RMY 25
06/21   83/65/74/+6/0.00/…/..           37 SSW  AERO 39 SSW  RMY 39
06/22   84/58/71/+3/0.68/…/..           30 NW   AERO 31 NW   RMY 31 TSTM
06/23   73/52/63/-5/0.00/…/..           25 NW   AERO 24 NW   RMY 26
06/24   76/58/67/-2/0.00/…/..           25 SE   AERO 24 SE   RMY 25
06/25   71/57/64/-5/T/…/..              23 S    AERO 23 S    RMY 23

06/26 The low since midnight is 61F, the daily normal low is 60F

RECORDS FOR THE MONTH:

High minimum on the 7th of 69F, beating the old record of
66F set in 1922 and 1953.

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

RECORDS FOR JUNE 26
HIGH 96F IN 1952
LOW 45F IN 1986
PRECIP 1.22 INS IN 1938
PEAK GUST 48 MPH N IN 1998

RECORDS FOR JUNE 27
HIGH 93F IN 1999, 2007
LOW 46F IN 1897
PRECIP 1.72 INS IN 1938
PEAK GUST 55e N IN 1945

TODAY’S REPORT PREPARED BY: Benjamin Turner

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Blue Hill Observatory & Science Center · Legal

Data Use & Privacy Policy

Please read the full Policy before accessing Observatory data · Effective January 1, 2025

Notice: By accessing, downloading, or using any Blue Hill Observatory data or services, you unconditionally accept and agree to be bound by this Policy in its entirety. If you do not agree, you may not access or use Observatory data.
Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
Part I — Data Use Policy
§ 01

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§ 05

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