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