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BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, JULY 26, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME
BREEZY, HOT, AND HUMID UNDER BRIGHT SUNSHINE…
We continue in a hot and humid air mass today under
abundant sunshine. Only some higher mid level and
thin cirrus clouds have been cruising by aloft.
A steady westerly breeze has been blowing today,
which has made it not feel too bad. Gusts over 25
mph have been frequent today with a peak around 27
mph so far.
The westerly breeze has also helped the mix the
atmosphere, thus allowing the dew point to drop into
the lower 60s this afternoon.
The high so far today is 88 degrees. This is 7 degrees
above the daily normal high of 81F. The low since
midnight is 70F, which is 7 degrees above the daily
normal low of 63F
Today’s Observations:
7 A.M.
Weather: Scattered Altocumulus/Altocumulus Castellanus,
Thin broken cirrus
Temperature: 76F; Dew Point: 65F; Relative Humidity: 69%
Wind: W at 12G20 kts
Sea-level pressure: 29.99 ins. Hg: falling, then steady
Visibility: 40 miles, hazy
6-hr Max temp: 76F
6-hr Min temp: 70F
24-hr Precip: 0.00 ins.
BHO SA 1155 150 SCT 250 –BKN 40 155/76/65/2812G20/999/
HAZY/ 8/081 56002 10076 20070
10 A.M.
Weather: Scattered Altocumulus, thin scattered Cirrus,
few small cumulus distant SSE-WSW
Temperature: 84F; Dew Point: 63F; Relative Humidity: 50%
Wind: W at 11G20 kts
Sea-level pressure: 29.97 ins. Hg: falling, then more rapidly
Visibility: 40 miles, hazy
3-hr Precip: 0.00 ins.
BHO SA 1455 120 SCT 250 –SCT 40 149/84/63/2811G20/997/
FEW SML CU DSNT SSE-WSW HAZY/ 8/171 58006
1 P.M.
Weather: Scattered Altocumulus, thin scattered Cirrus
Temperature: 87F; Dew Point: 63F; Relative Humidity: 45%
Wind: W at 14G19 kts
Sea-level pressure: 29.90 ins. Hg: falling, then more rapidly
Visibility: 40 miles, hazy
6-hr Max temp: 88F
6-hr Min temp: 76F
6-hr Precip: 0.00 ins.
BHO SA 1755 150 SCT 250 –SCT 40 126/87/63/2614G19/990/
HAZY/ 8/071 58023 10088 20076
SUMMARY FOR SATURDAY, JULY 25, 2020
TEMPERATURE (DEGREES F)
MAX…..88 NORMAL…..81
MIN…..67 NORMAL…..63
MEAN….78 NORMAL…..72
DEPARTURE FROM 30-YEAR NORMAL…………….. +6
TOTAL DEPARTURE FOR THE MONTH……………..+52 [+1.9 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………..13 DEPARTURE……. +5
TOTAL COOLING UNITS FOR THE MONTH…………….209 DEPARTURE…….+32
TOTAL COOLING UNITS FOR THE SEASON……………393 DEPARTURE…….+87
TOTAL COOLING UNITS LAST SEASON TO DATE……….336 DEPARTURE…….+57
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..18 W AT 8:03 P.M.
AERO…………………….18 WNW AT 4:34 P.M.
ASOS…………………….18 W AT 8:03 P.M.
DAVIS……………………19 W AT 8:02 P.M
RMY N/A MERLIN N/A
FASTEST MILE FOR YESTERDAY………………….14 W AT 8:06 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….13 SW AT 11:44 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………14 W AT 7:59 P.M.
AVERAGE WIND SPEED AND DIRECTION……………6.6 WSW
ASOS……………………7.2
DAVIS…………………..7.2 W [266 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE……-0.14
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….1.71 DEPARTURE……-1.43
ASOS…………..1.79
TOTAL PRECIPITATION FOR THE YEAR……….29.06 DEPARTURE……-1.05
ASOS………….29.80
PRELIMINARY CLIMATE SUMMARY FOR JULY 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
07/01 76/63/70/0/0.00/228/25 16 E AERO 14 E RMY 14 TSTM
07/02 86/61/74/4/0.00/803/88 30 WSW AERO 25 WSW RMY 33
07/03 73/60/67/-4/0.00/091/10 30 NE AERO 28 NE RMY 30
07/04 79/60/70/-1/0.00/565/62 16 S AERO 16 S RMY 16
07/05 83/63/73/+2/0.54/373/41 24 NW AERO 30 NW RMY 26 TSTM
07/06 73/60/67/-4/0.00/482/53 20 ENE AERO 16 NNE RMY 18
07/07 78/60/69/-2/0.00/454/50 25 S AERO 25 S RMY 26
07/08 83/64/74/+2/0.00/227/25 32 SSW AERO 32 SSW RMY 32
07/09 89/70/80/+8/0.00/834/92 24 S AERO 23 S RMY 22
07/10 83/70/77/+5/0.05/109/12 30 SSE AERO 32 SSE RMY N/A
07/11 85/70/78/+6/0.00/614/68 39 S AERO 39 S RMY 38
07/12 86/70/78/+6/0.00/830/92 28 WSW AERO 28 WSW RMY 29
07/13 82/69/76/+4/0.23/306/34 30 SSE AERO 31 SSE RMY 30 TSTM
07/14 78/63/71/-1/0.00/369/41 26 ENE AERO 25 ENE RMY 26
07/15 72/59/66/-6/0.00/539/60 21 NE AERO 21 NE RMY N/A
07/16 73/57/65/-7/0.00/815/91 21 E AERO 21 E RMY 19
07/17 71/57/64/-8/0.19/027/03 24 SSW AERO 24 SSW RMY 25
07/18 89/66/78/+6/0.00/822/92 18 W AERO 17 W RMY 19
07/19 92/69/81/+9/0.00/…/.. 28 S AERO 28 S RMY 26
07/20 91/72/82/+10/T/…/.. 25 SSW AERO 25 SSW RMY N/A
07/21 88/68/78/+6/0.00/…/.. 25 W AERO 25 W RMY 24
07/22 80/67/74/+2/…./…/.. 16 ENE AERO M M RMY 16
07/23 88/68/78/+6/0.48/…/.. 31 N AERO 32 N RMY 31
07/24 81/68/75/+3/0.00/…/.. 15 ENE AERO 15 ENE RMY 16
07/25 88/67/78/+6/0.00/…/.. 18 W AERO 18 WNW RMY N/A
07/26 The low since midnight is 70F, the daily normal low is 63F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JULY 26
HIGH 97F IN 1963
LOW 47F IN 1920
PRE 2.05 INS IN 1899
WIND 74e MPH NNW IN 1940
RECORDS FOR JULY 27
HIGH 95F IN 1949, 1963
LOW 50F IN 1920, 2001
PRE 4.01 INS IN 1979
WIND 47 MPH ENE IN 1984
TODAY’S REPORT PREPARED BY: Matt Douglas
