BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, SEPTEMBER 6, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME ANOTHER COOL AND DRY EARLY-FALL DAY.... We observed partly cloudy conditions throughout the day, with an average visibility of 70 miles. Dew points stayed in the mid 50's, making conditions perfect for being out of doors. A light wind has been coming in from the south- west, at an average of 5 mph. All together with a mix of sun and clouds, this has been a very enjoyable observing day.   The high so far today is 78F, 3 degrees above the daily normal max of 75F. The low since midnight is 58F, which is the same as the normal low of 58F. PRELIMINARY STATS FOR AUGUST 2020 TEMPERATURE, Deg. F Avg. Max. 82.5 [+3.3] Avg. Min. 64.3 [+2.5] Mean      73.4 [+2.9] 24-hour corrected mean: 72.3 Max. for month: 94F on the 10th Min. for month: 54F on the 31st HEATING DEGREE DAYS Total heating units:     2 [-14] Total for the season:    3 [-222] Total for last season:  12 COOLING DEGREE DAYS Total cooling units:    270  [+84] Total for the season:   757  [+220] Total for last season:  622 PRECIPITATION, Inches Total: 3.74 [-0.29] Greatest in 24 hrs: N/A WIND, mph Avg. uncorrected wind speed: 10.0 mph Avg. corrected wind speed:   10.6 mph Prevailing wind direction:   SSW [12%] Peak gust and direction:     67 SSE on the 4th SUNSHINE: Campbell-Stokes card minutes: N/A Astronomical total minutes:   N/A Today's Observations: 7 A.M. Weather: Broken altocumulus Temperature: 63F; Dew Point: 53F; Relative Humidity: 73% Wind: SW at 7 kts Sea-level pressure: 30.19 ins. Hg: rising steadily Visibility: 75 miles 6-hr Max temp: 63F 6-hr Min temp: 58F 24-hr Precip: 0.00 ins. BHO SA 1155 140 BKN 75 226/63/53/2307/019/ 8/070 51008 10063 20058 10 A.M. Weather: Scattered altocumulus and cirrocumulus Temperature: 73F; Dew Point: 53F; Relative Humidity: 49% Wind: SW at 3 kts, light and variable Sea-level pressure: 30.18 ins. Hg: rising then falling Visibility: 75 miles 3-hr Precip: 0.00 ins. BHO SA 1455 70 SCT 250 SCT 75 221/73/53/2303/018/ WND L/V/ 8/079 55005 1 P.M. Weather: Scattered Cumulus/stratocumulus Temperature: 75F; Dew Point: 54F; Relative Humidity: 49% Wind: WSW 8 kts Sea-level pressure: 30.19 ins. Hg: rising steadily Visibility: 75 miles 6-hr Max temp: 78F 6-hr Min temp: 63F 6-hr Precip: 0.00 ins. BHO SA 1755 50 SCT 75 226/75/54/2508/019/ 8/800 50005 10078 20063 SUMMARY FOR SATURDAY, SEPTEMBER 5, 2020 TEMPERATURE (DEGREES F) MAX.....76   NORMAL.....76 MIN.....55   NORMAL.....58 MEAN....66   NORMAL.....67 DEPARTURE FROM 30-YEAR NORMAL................ -1 TOTAL DEPARTURE FOR THE MONTH................ +4 [+0.6 DEGREES/DAY] COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY............  1  DEPARTURE......-2                     TOTAL COOLING UNITS FOR THE MONTH............ 17  DEPARTURE......-1 TOTAL COOLING UNITS FOR THE SEASON...........774  DEPARTURE....+219 TOTAL COOLING UNITS LAST SEASON TO DATE......634  DEPARTURE....+140 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................25 W   AT  3:32 P.M.                      AERO.........................25 W   AT  3:24 P.M.                    ASOS.........................25 W   AT  3:32 P.M.                    DAVIS........................26 WNW AT  3:49 P.M.                    RMY 24  MERLIN 24 FASTEST MILE FOR YESTERDAY......................19 W   AT  3:50 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................18 W   AT  3:50 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................19 W   AT  3:50 P.M. AVERAGE WIND SPEED AND DIRECTION..............10.6 NW                             ASOS.......................10.8                    DAVIS......................10.8 WNW [288 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE....-0.12                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........0.22  DEPARTURE....-0.36                          ASOS..............0.24 TOTAL PRECIPITATION FOR THE YEAR..........33.03  DEPARTURE....-2.57                          ASOS.............33.82 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/+5/0.00/866/100            18 S    AERO 21 S    RMY 19 08/02  85/69/77/+5/0.02/320/37             36 S    AERO 37 S    RMY 38 08/03  91/75/83/+11/0.00/715/83            36 WSW  AERO 38 SW   RMY 36 08/04  83/71/77/5/0.21/094/11              67 SSE  AERO 71 S    RMY 70 08/05  90/68/79/+7/0.00/668/78             28 SW   AERO 30 SW   RMY 29 08/06  84/65/75/3/0.00/701/82   20 W    AERO 17 W    RMY 19 08/07  79/65/72/0/T/136/16                 16 NE   AERO 16 NE   RMY N/A 08/08  83/64/74/+2/0.00/612/72             20 S    AERO 20 S    RMY 19 08/09  90/65/78/+6/0.00/661/78             26 SSW  AERO 26 SSW  RMY 26 08/10  94/69/82/+11/0.00/727/86            22 W    AERO 20 W    RMY 20 08/11  92/72/82/+11/0.00/708/84            31 SSW  AERO 35 SSW  RMY 31  TSTM 08/12  93/74/84/+13/0.00/647/77            22 SSW  AERO 22 SW   RMY 19 08/13  88/71/80/+9/0.00/528/63             18 ENE  AERO 18 NE   RMY 18 08/14  82/67/75/+4/0.00/618/74             23 ENE  AERO 23 ENE RMY N/A 08/15  67/62/65/-6/T/000/00                33 NNE  AERO 32 NNE  RMY N/A 08/16  69/62/66/-5/..../000/00             26 ENE  AERO 28 ENE  RMY 26 08/17  73/59/66/-5/..../339/41             25 NE   AERO 24 NE   RMY N/A 08/18  84/63/74/+3/..../784/95             23 W    AERO 23 W    RMY 24 08/19  81/59/70/0/0.03/526/64              26 W    AERO 28 W    RMY 27 08/20  80/56/68/-2/0.00/804/98             22 W    AERO 21 W    RMY 22 08/21  88/61/75/+5/0.00/719/88             28 SW   AERO 26 SW   RMY 28 08/22  85/66/76/+6/0.26/521/64             18 NNE  AERO 16 S    RMY 16 08/23  89/63/76/+6/2.21/552/68             60 WNW  AERO 53 WNW  RMY 58  TSTM HAIL 08/24  87/67/77/+7/0.00/493/61             18 S    AERO 18 S    RMY 19  TSTM 08/25  86/65/76/+7/0.01/492/61             35 NNW  AERO 37 NNW  RMY 35 08/26  74/56/65/-4/0.00/780/97             29 NW   AERO 32 NW   RMY N/A 08/27  68/57/63/-6/0.33/008/01             18 SSE  AERO 20 SSE  RMY 20  TSTM 08/28  80/59/70/+1/0.00/559/70             20 W    AERO 20 W    RMY N/A 08/29  74/65/70/+1/0.06/000/00             32 W    AERO 32 W    RMY N/A 08/30  75/57/66/-2/0.00/793/100            36 W    AERO 36 W    RMY N/A 08/31  75/54/65/-3/0.00/569/72             20 S    AERO 20 S    RMY 20 DAILY RECORDS FOR AUGUST 2020 8/23/20: DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 89F,          BREAKS PREVIOUS RECORD of 88F SET IN 1918, 1947, 1949, 1996 8/23/20: DAILY RECORD PRECIPITATION OF 2.21 INS,          BREAKS PREVIOUS RECORD OF 2.09 INS SET IN 2010 8/23/20: DAILY RECORD PEAK WIND GUST OF 60 MPH,          TIES PREVIOUS RECORD OF 60 MPH SET IN 1940 PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 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 09/01  76/59/68/0/0.00/.../..              22 SSE  AERO 21 SE   RMY 20 09/02  69/59/64/-4/.../.../..              23 SSE  AERO 23 SSE  RMY 24 09/03  75/66/71/+4/.../.../..              22 SSW  AERO 21 SSW  RMY n/a 09/04  82/62/72/+5/0.00/.../..             26 WNW  AERO 26 WNW  RMY 25 09/05  76/55/66/-1/0.00/.../..             25 W    AERO 25 W    RMY 24 09/06 The low since midnight is 58F, the daily normal low is 58F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR SEPTEMBER 6 HIGH 92F IN 1900, 2018 LOW 39F IN 1888 PRECIP 3.19 INCHES IN 1890 PEAK GUST 78e MPH SE IN 1979 (TROPICAL STORM DAVID) RECORDS FOR SEPTEMBER 7 HIGH 92F IN 2007, 2015 LOW 40F IN 1888 PRECIP 2.95 INCHES IN 1891 PEAK GUST 58e MPH W IN 1941 TODAY'S REPORT PREPARED BY: Benjamin Turner