BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, OCTOBER 3RD, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0544E SUNSET:  1722E MOSTLY CLOUDY WITH LIMITED VISIBILITY.... We observed mostly cloudy skies for the majority of the day. Visibility went from a 1/2 mile in fog this morning to 45 miles this afternoon. Wind is easterly and light at an average of 5 mph, and a peak gust so far of 14 mph. Last month ended off a degree above average with a rain surplus of 2.58 inches. The high so far today is 65F, a degree below the normal max of 66F. The low since midnight is 55F, 6 degrees above the normal low of 49F. -------------------------------------------------------------- PRELIMINARY STATS FOR SEPTEMBER 2021 TEMPERATURE, Deg. F Avg. Max. 73.2 [+0.5] Avg. Min. 57.4 [+1.8] Mean      65.3 [+1.1] 24-hour corrected mean: 64.8 Max. for month: 82F on the 15th Min. for month: 45F on the 29th HEATING DEGREE DAYS Total heating units:     46 [-54] Total for the season:    74 [+25] Total for last season:   98 COOLING DEGREE DAYS Total cooling units:      62 [-12] Total for the season:    712 [+42] Total for last season:   830 PRECIPITATION, Inches Total: 6.64 [+2.58] Greatest in 24 hrs: N/A WIND, mph Avg. uncorrected wind speed:  10.5 mph Avg. corrected wind speed:    10.7 mph Prevailing wind direction:   NW [11%] Peak gust and direction:     43 ENE on the 2nd SUNSHINE: Campbell-Stokes card minutes: N/A Astronomical total minutes: N/A -------------------------------------------------------------- Today's Observations: 7 A.M. Weather: Fog, 300 feet vertical visibility Temperature: 58F; Dew Point: 58F; Relative Humidity: 100% Wind: ENE @ 7 kts Sea-level pressure: 1015.6 mb; 29.99 in. Hg: rising, rising then falling Visibility: 1/2 mile, fog   6-hr Max temp: 59F 6-hr Min temp: 55F 24-hr Precip: 0.00 ins. BHO SA 1155 X W3 1/2F 156/58/58/0707/999/ 8//// 55001 10059 20055 10 A.M. Weather: Overcast stratus Temperature: 61F; Dew Point: 59F; Relative Humidity: 94% Wind: ENE @ 4 kts, light and variable Sea-level pressure: 1016.2 mb; 30.01 in Hg; rising then more slowly Visibility: 30 miles, thin fog 3-hr Precip: 0.00 ins. BHO SA 1455 10 OVC 30 162/61/59/0604/001/ THN F ALQDS WND L/V/ 8/6// 51006 1 P.M. Weather: Scattered stratocumulus, broken altocumulus Temperature: 65F, Dew point: 59F; Relative Humidity: 81% Wind: ESE @ 5 kts, wind light Sea-level pressure: 1014.7 mb; 29.96 in Hg; steady then falling Visibility: 45 miles 6-hr Max temp: 65F 6-hr Min temp: 57F 6-hr Precip: 0.00 ins. BHO SA 1755 20 SCT 100 BKN 45 147/65/59/1105/996/ WND LGT/ 8/870 58015 10065 20057 SUMMARY FOR SATURDAY, OCTOBER 2, 2021 TEMPERATURE (DEGREES F) MAX.......73     NORMAL.....66 MIN.......47     NORMAL.....49 MEAN......60     NORMAL.....58 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL............. +2 TOTAL DEPARTURE FOR THE MONTH......................... -2 [-1.2 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022) TOTAL HEATING UNITS FOR YESTERDAY................5  DEPARTURE........-3 TOTAL HEATING UNITS FOR THE MONTH...............16  DEPARTURE........+1 TOTAL HEATING UNITS FOR THE SEASON..............90  DEPARTURE.......-43 TOTAL HEATING UNITS LAST SEASON TO DATE........107  DEPARTURE.......-17 COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021) TOTAL COOLING UNITS FOR YESTERDAY................0  DEPARTURE........-1 TOTAL COOLING UNITS FOR THE MONTH................0  DEPARTURE........-1 TOTAL COOLING UNITS FOR THE SEASON.............712  DEPARTURE.......+40 TOTAL COOLING UNITS LAST SEASON TO DATE........831  DEPARTURE......-119 PEAK WIND GUST (MPH):                      Official...................24 WSW @  2:03 P.M.                      AEROVANE (south tower).....23 WSW @  2:15 P.M.                      VECTOR #2 (south tower)....25     @ 12:53 P.M.                      DAVIS #2 (south tower).....24 WSW @  2:03 P.M.                      ASOS...........OUT OF SERVICE D/T RENOVATIONS                      VECTOR #1......OUT OF SERVICE D/T RENOVATIONS                      DAVIS #1.......OUT OF SERVICE D/T RENOVATIONS                      RMY............OUT OF SERVICE D/T RENOVATIONS                        MERLIN.........OUT OF SERVICE D/T RENOVATIONS FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL..................16 WSW  @  2:03 P.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE..............18      @  2:04 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............19 WSW  @  2:04 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE.......OUT OF SERVICE D/T RENOVATIONS MAXIMUM 2-MINUTE DAVIS #1 AVERAGE...OUT OF SERVICE D/T RENOVATIONS MAXIMUM 2-MINUTE VECTOR #1 AVERAGE..OUT OF SERVICE D/T RENOVATIONS MAXIMUM 2-MINUTE RMY AVERAGE........OUT OF SERVICE D/T RENOVATIONS AVERAGE WIND SPEED AND DIRECTION:                      CONTACTING/OFFICIAL........10.8 WSW [260 total miles]                      VECTOR #2..................11.7                      DAVIS #2...................11.8 WSW                      RMY.................OUT OF SERVICE D/T RENOVATIONS                      ASOS................OUT OF SERVICE D/T RENOVATIONS                      VECTOR #1...........OUT OF SERVICE D/T RENOVATIONS                      DAVIS #1............OUT OF SERVICE D/T RENOVATIONS    PRECIPITATION (INCHES) THROUGH THIS MORNING (EST): TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.......0.00  DEPARTURE....-0.17 TOTAL PRECIPITATION FOR THE MONTH.............0.00  DEPARTURE....-0.34 TOTAL PRECIPITATION FOR THE YEAR.............46.98  DEPARTURE....+8.23 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   68/56/62/-7/1.47/000/00          34 NNE AERO 37 NNE RMY N/A     09/02   71/55/63/-6/2.53/322/41          49 ENE AERO 52 ENE RMY N/A 09/03   72/52/62/-6/0.00/735/94          23 NW  AERO 23 NW  RMY N/A 09/04   76/55/66/-2/0.00/757/97          22 WNW AERO 21 WNW RMY N/A 09/05   72/60/66/-2/0.04/008/01          27 S   AERO 29 S   RMY N/A 09/06   80/61/71/+3/0.00/557/72          24 WNW AERO 25 WNW RMY N/A 09/07   78/57/68/+1/0.00/732/95          23 WSW AERO 22 WSW RMY N/A 09/08   81/61/71/+4/0.00/646/84          43 S   AERO 45 S   RMY N/A 09/09   71/64/68/+1/0.90/000/00          33 S   AERO 36 S   RMY N/A 09/10   74/55/65/-1/0.04/595/78          31 NW  AERO 32 WNW RMY N/A 09/11   75/51/63/-3/0.00/730/96          24 SW  AERO 24 SW  RMY N/A 09/12   79/60/70/+4/0.00/591/78          33 SW  AERO 32 SW  RMY N/A 09/13   77/62/70/+5/0.06/559/74          22 NW  AERO 23 NW  RMY N/A 09/14   75/59/67/+2/0.00/444/59          23 S   AERO 25 S   RMY N/A 09/15   82/65/74/+9/T/539/72             32 SSW AERO 35 SSW RMY N/A 09/16   69/61/65/+1/0.27/037/05          24 ENE AERO 24 ENE RMY N/A TSTM       09/17   66/60/63/-1/0.02/000/00          22 NE  AERO 23 NE  RMY N/A 09/18   74/62/68/+5/0.04/207/28          17 WNW AERO 18 WNW RMY N/A TSTM 09/19   71/57/64/+1/0.15/619/84          23 NNE AERO 24 NNE RMY N/A 09/20   71/55/63/0/0.00/588/80           20 SE  AERO 20 SE  RMY N/A 09/21   75/55/65/+3/0.00/.../..          19 SSE AERO 20 SSE RMY N/A 09/22   75/65/70/+8/0.02/.../..          30 S   AERO 30 S   RMY N/A 09/23   78/65/72/+10/0.08/.../..         36 SSE AERO 37 SSE RMY N/A 09/24   75/62/69/+8/0.02/.../..          43 SSE AERO 45 SSE RMY N/A 09/25   74/59/67/+6/0.02/.../..          14 N   AERO 14 NNW RMY N/A 09/26   73/54/64/+4/0.57/.../..          33 WNW AERO 32 WNW RMY N/A 09/27   73/52/63/+3/T/.../..             30 SW  AERO 30 SW  RMY N/A 09/28   67/52/60/+1/0.40/.../..          27 SSW AERO 25 SSW RMY N/A TSTM 09/29   63/45/54/-5/0.00/.../..          25 NNW AERO 25 NNW RMY N/A 09/30   60/46/53/-6/.../.../..           22 NNW AERO 21 NNW RMY N/A PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 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 10/01   64/44/54/-4/..../.../..          20 WNW AERO 20 WNW RMY N/A 10/02   73/47/60/+2/..../.../..          24 WSW AERO 23 WSW RMY N/A 10/03   The low since midnight is 55F, the daily normal low is 49F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR OCTOBER 3 HIGH 82F IN 1922 LOW 28F IN 1899 PRECIP 1.76 INCHES IN 1979 PEAK GUST 62 MPH WNW IN 1964 RECORDS FOR OCTOBER 4 HIGH 84F IN 2007 LOW 28F IN 1888 PRECIP 1.87 INCHES IN 2011 PEAK GUST 59 MPH SSW IN 1990 TODAY'S REPORT PREPARED BY: Benjamin Turner