BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA FRIDAY, AUGUST 21, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME SPECTACULAR SUMMER WEATHER CONTINUES... Overall, today has been a closer mirror to yesterday. Visibility slipped just a little to about 70 miles on average. Dew points have ticked up a bit to the mid- and upper-50s, but a far cry from feeling tropical! Yesterday capped out at 80 degrees, while today is set to outpace that high by several degrees- clocking in at 87 degrees by our 1PM observation. Winds have been a bit busier on average - so far a mean of 14 MPH or so. Yesterday's NW wind transitioned around 7 PM to the SW, which explains the increase in dew points and ambient air temperature today. The high so far today is 87F, 8 degrees below the daily normal maximum of 79F. The low since midnight is 61F, which equals are the normal minimum of 61F. Today's Observations: 7 A.M. Weather: Clear (few altocumulus distant E-SW, few cirrus distant E-SW) Temperature: 65F; Dew Point: 58F; Relative Humidity: 77% Wind: SW at 13 kts Sea-level pressure: 29.97 ins. Hg: rising unsteadily Visibility: 75 miles 6-hr Max temp: 65F 6-hr Min temp: 61F 24-hr Precip: 0.00 ins. BHO SA 1155 CLR 75 150/65/58/2213/997/ FEW AC DSNT E-SW FEW CI DSNT E-SW/ 8/052 52001 10065 20061 10 A.M. Weather: Scattered Cirrus Temperature: 80F; Dew Point: 60F; Relative Humidity: 51% Wind: SW at 11 kts Sea-level pressure: 29.93 ins. Hg: falling, then more rapidly Visibility: 70 miles 3-hr Precip: 0.00 ins. BHO SA 1455 250 SCT 70 136/80/60/2211/993/ 8/001 58014 1 P.M. Weather: Scattered Cirrus (few cumulus all quads, few alto- cumulus lenticularis NW-N) Temperature: 78F; Dew Point: 55F; Relative Humidity: 34% Wind: WSW at 14G18 kts Sea-level pressure: 29.89 ins. Hg: falling unsteadily Visibility: 70 miles 6-hr Max temp: 87F 6-hr Min temp: 65F 6-hr Precip: 0.00 ins. BHO SA 1755 250 SCT 70 122/87/55/2414G18/989/ FEW CU ALQDS FEW ACL NW-N/ 8/141 57014 10087 20065 SUMMARY FOR THURSDAY, AUGUST 20, 2020 TEMPERATURE (DEGREES F) MAX.....80   NORMAL.....79 MIN.....56   NORMAL.....62 MEAN....68   NORMAL.....70 DEPARTURE FROM 30-YEAR NORMAL..................-2 TOTAL DEPARTURE FOR THE MONTH.................+77 [+3.7 DEGREES/DAY] COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY..................3  DEPARTURE.......-3                       TOTAL COOLING UNITS FOR THE MONTH................204  DEPARTURE......+71 TOTAL COOLING UNITS FOR THE SEASON...............691  DEPARTURE.....+207 TOTAL COOLING UNITS LAST SEASON TO DATE..........568  DEPARTURE.....+123 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................22 W   AT  3:26 P.M.                      AERO.........................21 W   AT  3:28 P.M.                    ASOS.........................22 W   AT  3:26 P.M.                    DAVIS........................21 W   AT  3:26 P.M                    RMY 22  MERLIN 20 FASTEST MILE FOR YESTERDAY......................14 W   AT  4:43 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................15 W   AT  4:42 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................16 W   AT  1:49 P.M. AVERAGE WIND SPEED AND DIRECTION...............9.1 NNW                              ASOS........................9.2                    DAVIS.......................9.5 WNW [291 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE......-0.13                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........0.87  DEPARTURE......-1.88                          ASOS..............0.88 TOTAL PRECIPITATION FOR THE YEAR..........29.94  DEPARTURE......-3.80                          ASOS.............30.69 PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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 08/01  87/66/77/+5/0.00/.../..             18 S    AERO 21 S    RMY 19 08/02  85/69/77/+5/0.02/.../..             36 S    AERO 37 S    RMY 38 08/03  91/75/83/+11/0.00/.../..            36 WSW  AERO 38 SW   RMY 36 08/04  83/71/77/5/0.21/.../..              67 SSE  AERO 71 S    RMY 70 08/05  90/68/79/+7/0.00/.../..             28 SW   AERO 30 SW   RMY 29 08/06  84/65/75/3/0.00/.../..   20 W    AERO 17 W    RMY 19 08/07  79/65/72/0/T/.../..                 16 NE   AERO 16 NE   RMY N/A 08/08  83/64/74/+2/0.00/.../..             20 S    AERO 20 S    RMY 19 08/09  90/65/78/+6/0.00/.../..             26 SSW  AERO 26 SSW  RMY 26 08/10  94/69/82/+11/0.00/.../..            22 W    AERO 20 W    RMY 20 08/11  92/72/82/+11/0.00/.../..            31 SSW  AERO 35 SSW  RMY 31  TSTM 08/12  93/74/84/+13/0.00/.../..            22 SSW  AERO 22 SW   RMY 19 08/13  88/71/80/+9/0.00/.../..             18 ENE  AERO 18 NE   RMY 18 08/14  82/67/75/+4/0.00/.../..             23 ENE  AERO 23 ENE RMY N/A 08/15  67/62/65/-6/T/.../..                33 NNE  AERO 32 NNE  RMY N/A 08/16  69/62/66/-5/..../.../..             26 ENE  AERO 28 ENE  RMY 26 08/17  73/59/66/-5/..../.../..             25 NE   AERO 24 NE   RMY N/A 08/18  84/63/74/+3/..../.../..             23 W    AERO 23 W    RMY 24 08/19  81/59/70/0/0.03/.../..              26 W    AERO 28 W    RMY 27 08/20  80/56/68/-2/0.00/.../..             22 W    AERO 21 W    RMY 22 08/21  The low since midnight is 61F, 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 AUGUST 21 HIGH 92F IN 1937, 1995 LOW 47F IN 1982 PRECIP 2.84 INCHES IN 1888 PEAK GUST 54 MPH WSW IN 2004 RECORDS FOR AUGUST 22 HIGH 90F IN 1939 LOW 42F IN 1894 PRECIP 2.28 INCHES IN 1935 PEAK GUST 44 MPH SSW IN 1987 TODAY'S REPORT PREPARED BY: Andrew Swanson