BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA MONDAY, SEPTEMBER 7, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME BREEZY AND WARM; PLENTY OF SUNSHINE FOR LABOR DAY.... Spectacular day here on the summit of Blue Hill, making for a delightful Labor Day! Plenty of sunshine, warm temperatures, and excellent visibility up to 70 miles has been on the menu today. To make it even better, the humidity levels are comfortable with dew point readings in the low to mid 50s. The wind has been pretty busy today out of the south and south-southeast, gusting over 25 mph at times. The average speed since 7 A.M. is 12.1 mph. The high so far today is 79F, 4 degrees above the daily normal max of 75F. The low since midnight is 61F, which is 3 degrees above 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 [-22] 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: 15366 minutes of a possible 24780 or 62% Astronomical total minutes: 15940 minutes of a possible 25709 or 62% Today's Observations: 7 A.M. Weather: Thin scattered cirrus, few stratocumulus distant NW, few altocumulus distant SW, hazy aloft Temperature: 66F; Dew Point: 63F; Relative Humidity: 90% Wind: S at 12G17 kts Sea-level pressure: 30.19 ins. Hg: falling, then rising Visibility: 60 miles 6-hr Max temp: 66F 6-hr Min temp: 61F 24-hr Precip: 0.00 ins. BHO SA 1155 300 -SCT 60 225/66/63/1712G17/019/ FEW SC DSNT NW FEW AC DSNT SW HAZY ALFT/ 8/531 53005 10066 20061 10 A.M. Weather: Thin scattered cirrus, few cumulus distant SSW-NW, few altocumulus distant WSW-NNW Temperature: 74F; Dew Point: 52F; Relative Humidity: 46% Wind: S at 14G19 kts Sea-level pressure: 30.19 ins. Hg: rising then falling Visibility: 70 miles 3-hr Precip: 0.00 ins. BHO SA 1455 300 -SCT 70 224/74/52/1814G19/019/ FEW CU DSNT SSW-NW FEW AC DSNT WSW-NNW/ 8/251 58001 1 P.M. Weather: Thin scattered cirrus, few cumulus distant SE-SW-NW Temperature: 78F; Dew Point: 53F; Relative Humidity: 42% Wind: SSE at 14G20 kts Sea-level pressure: 30.13 ins. Hg: falling, then more rapidly Visibility: 70 miles 6-hr Max temp: 79F 6-hr Min temp: 66F 6-hr Precip: 0.00 ins. BHO SA 1755 250 -SCT 70 203/78/53/1614G20/013/ FEW CU DSNT SE-SW-NW/ 8/204 58021 10079 20066 SUMMARY FOR SUNDAY, SEPTEMBER 6, 2020 TEMPERATURE (DEGREES F) MAX.....78   NORMAL.....75 MIN.....58   NORMAL.....58 MEAN....68   NORMAL.....67 DEPARTURE FROM 30-YEAR NORMAL................ +1 TOTAL DEPARTURE FOR THE MONTH................ +5 [+0.6 DEGREES/DAY] COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY............  3  DEPARTURE...... 0                     TOTAL COOLING UNITS FOR THE MONTH............ 20  DEPARTURE......-1 TOTAL COOLING UNITS FOR THE SEASON...........777  DEPARTURE....+219 TOTAL COOLING UNITS LAST SEASON TO DATE......634  DEPARTURE....+143 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................24 W   AT  2:09 A.M.                      AERO.........................24 W   AT  2:08 A.M.                    ASOS.........................23 W   AT  2:08 A.M.                    DAVIS........................24 W   AT  2:07 A.M.                    RMY N/A  MERLIN N/A FASTEST MILE FOR YESTERDAY......................19 W   AT  2:09 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................18 W   AT  2:08 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................19 W   AT  2:08 P.M. AVERAGE WIND SPEED AND DIRECTION.............. 7.9 WSW                             ASOS....................... 8.2                    DAVIS...................... 8.2 SW [225 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..........0.22  DEPARTURE....-0.49                          ASOS..............0.24 TOTAL PRECIPITATION FOR THE YEAR..........33.03  DEPARTURE....-2.70                          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  78/58/68/+1/0.00/.../..             24 W    AERO 24 W    RMY N/A 09/07 The low since midnight is 61F, 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 7 HIGH 92F IN 2007, 2015 LOW 40F IN 1888 PRECIP 2.95 INCHES IN 1891 PEAK GUST 58e MPH W IN 1941 RECORDS FOR SEPTEMBER 8 HIGH 97F IN 2015 LOW 42F IN 1978 PRECIP 1.51 INCHES IN 2011 PEAK GUST 45 MPH S IN 2012 TODAY'S REPORT PREPARED BY: Matt Douglas