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

FRIDAY, JULY 3, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME

OVERCAST SKIES WITH DISTANT FOG....

Low Stratus layer was observed throughout 
the day along with distant fog making 
visibility poor. Temperatures have be 
decreasing since the 7 A.M observation 
with the high so far today being 70 degrees, 
This is 5 degrees below the daily normal 
high of 80F. The low since midnight is 65F, 
which is 3 degrees above the daily normal 
low of 62F.

Today's Observations:

7 A.M.
Weather: Overcast stratus
Temperature: 70F; Dew Point: 67F; Relative Humidity: 86%
Wind: NE at 12G23 kts
Sea-level pressure: 29.84 ins. Hg: steady, then rising
Visibility: 40 miles, distant fog
6-hr Max temp: 72F
6-hr Min temp: 70F
24-hr Precip: 0.00 ins.
24-hr Frozen:  0.0 ins.
BHO SA 1155 E15 OVC 40 108/70/67/0412G23/984/ DSNT FG ALQDS/ 
8/6// 53019 10072 20070

10 A.M.
Weather: Overcast stratus
Temperature: 66F; Dew Point: 65F; Relative Humidity: 94%
Wind: NE at 9 kts
Sea-level pressure: 29.90 ins. Hg: rising, then more slowly
Visibility: 20 miles, distant fog
3-hr Precip:  0.00 ins.
3-hr Frozen:   0.0 ins.
BHO SA 1455 E12 OVC 20 127/66/65/0509/990 DSNT FG ALQDS/ 
8/6// 51019 

1 P.M.
Weather: Overcast stratus
Temperature: 66F; Dew Point: 62F; Relative Humidity: 86%
Wind: NE at 11G23 kts
Sea-level pressure: 29.91 ins. Hg: Rising, then steady
Visibility: 30 miles, distant fog
6-hr Max temp: 70F
6-hr Min temp: 65F
6-hr Precip:  0.00 ins.
6-hr Frozen:   0.0 ins.
BHO SA 1755 E15 OVC 3O 131/66/62/0411G23/991/ DSNT FG ALQDS 
VSBY 10 MI E-NE/ 8/6// 50004 10070 20065


SUMMARY FOR THURSDAY, JULY 2, 2020 

TEMPERATURE (DEGREES F)
MAX.....86   NORMAL.....79
MIN.....61   NORMAL.....62
MEAN....74   NORMAL.....70

DEPARTURE FROM 30-YEAR NORMAL...................+4
TOTAL DEPARTURE FOR THE MONTH...................+4 [+2.0 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY..................9  DEPARTURE........ +4
TOTAL COOLING UNITS FOR THE MONTH.................14  DEPARTURE........ 2
TOTAL COOLING UNITS FOR THE SEASON.............. 188  DEPARTURE.......+57
TOTAL COOLING UNITS LAST SEASON TO DATE..........104  DEPARTURE.......+94

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY....................30 WSW AT 8:02 P.M.  
                   AERO.........................25 WSW AT 8:05 P.M.  
                   ASOS.........................32 NW  AT 8:02 P.M. 
                   DAVIS........................32 NW  AT 8:01 P.M RMY 33
FASTEST MILE FOR YESTERDAY......................21 WSW AT 8:02 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...................20 NW  AT 8:06 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..................21 NW  AT 8:05 P.M.
AVERAGE WIND SPEED AND DIRECTION.............. 5.5 W             
                   ASOS....................... 5.8
                   DAVIS...................... 6.1 WSW [258 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE......-0.11
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.01  DEPARTURE......-0.21
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE YEAR..........27.36  DEPARTURE......+0.17
                         ASOS.............28.01


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  64/42/53/-9/T/0.0/000/00            28 WNW  AERO 29 WNW RMY 28
06/02  72/45/59/-3/..../0.0/689/76         28 W    AERO 27 W   RMY 28
06/03  79/55/67/+5/T/0.0/400/44            29 W    AERO 28 W   RMY 26
06/04  87/62/75/+12/..../0.0/673/74        26 W    AERO 25 S   RMY N/A
06/05  80/65/73/+10/..../0.0/300/33        28 SSW  AERO 28 SSW RMY N/A TSTM
06/06  86/57/72/+9/..../0.0/301/33         55 SW   AERO 59 SW  RMY 59  TSTM
06/07  68/54/61/-3/0.00/0.0/255/28         24 NW   AERO 24 NW  RMY N/A
06/08  77/51/64/0/0.00/0.0/866/95          25 W    AERO 24 W   RMY 25
06/09  77/60/69/+5/T/0.0/110/12            23 E    AERO 21 E   RMY N/A
06/10  70/58/64/-1/T/0.0/658/72            25 E    AERO 24 E   RMY N/A
06/11  71/64/68/+3/0.62/0.0/165/18         40 S    AERO 40 S   RMY 42
06/12  82/63/73/+8/0.00/0.0/705/77         26 W    AERO 25 W   RMY 27
06/13  71/53/62/-3/0.00/0.0/669/73         21 WNW  AERO 20 WNW RMY N/A            
06/14  67/49/58/-8/0.00/0.0/852/93         21 E    AERO 21 ENE RMY 21
06/15  67/53/60/-6/5/0/0.0/705/77          21 NE   AERO 16 ENE RMY 20
06/16  73/54/64/-2/0.00/0.0/889/97         18 E    AERO 18 E   RMY 18
06/17  78/57/68/+1/0.00/0.0/889/97         20 S    AERO 20 S   RMY 20
06/18  86/59/73/+6/0.00/0.0/715/78         22 S    AERO 22 SSW RMY 22
06/19  86/66/76/+9/0.00/0.0/789/86         22 S    AERO 22 S   RMY 21
06/20  90/65/78/+10/0.00/0.0/834/91        22 S    AERO 21 S   RMY 21
06/21  90/66/78/+10/0.83/0.0/514/56        33 ESE  AERO 35 ESE RMY 33  TSTM
06/22  77/65/71/+3/0.00/0.0/.../..         15 E    AERO 17 S   RMY 14
06/23  85/65/75/+7/0.00/0.0/.../..         27 S    AERO 24 S   RMY 26
06/24  84/66/75/+6/0.00/0.0/.../..         25 S    AERO 24 S   RMY 25
06/25  84/63/74/+5/0.00/0.0/.../..         29 W    AERO 29 W   RMY 29
06/26  83/65/74/+5/0.02/0.0/.../..         25 S    AERO 25 S   RMY 27
06/27  82/65/74/+5/0.05/0.0/.../..         21 S    AERO 20 S   RMY 20
06/28  84/62/73/+3/3.27/0.0/.../..         35 W    AERO 33 N   RMY 37  TSTM
06/29  71/61/66/-4/..../0.0/.../..         18 NE   AERO 18 NE  RMY 18  TSTM
06/30  68/62/65/-5/..../.../.../..         14 ENE  AERO 14 ENE RMY 13 

Record rainfall on the 28th of 3.27". Old record 2.09" in 1938

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  76/63/70/0/0.01/.../.../..          16 E    AERO 14 E   RMY 14
07/02  86/61/74/4/0.00/.../.../..          30 WSW  AERO 25 WSW RMY 33

07/03 The low since midnight is 63F, the daily normal low is 61F

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

RECORDS FOR JULY 3
HIGH 99F IN 1911
LOW 47F IN 1914
PRECIP 1.36 IN 1985
PEAK GUST 52 MPH NW IN 1963

RECORDS FOR JULY 4
HIGH 98F IN 1911, 1919, 1949
LOW 48F IN 1914
PRECIP 2.48 IN 2014
PEAK GUST 50e MPH WNW IN 1949

TODAY'S REPORT PREPARED BY: Nicholas Rousseau