BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA MONDAY, OCTOBER 11, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0553E SUNSET:  1708E PARTLY CLOUDY AND COMFORTABLY MILD WITH AN ONSHORE BREEZE.... Cloudy skies and even a little light rain started the day, but clouds gave way to mostly sunny skies by late morning. Temperatures rose into the mid-upper 60s with a gentle onshore breeze. All in all it was nice day for the Boston Marathon and any outdoor activities. Visibility started under 1 mile, but improved to 30 miles by early afternoon as the air dried out some. The high so far today is 67F, 4 degrees above the normal max of 63F. The low since midnight is 58F, 12 degrees above the normal low of 46F. -------------------------------------------------------------- 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 [-44] Total for last season:   98 COOLING DEGREE DAYS Total cooling units:      62 [-12] Total for the season:    714 [+44] Total for last season:   830 PRECIPITATION, Inches Total: 6.64 [+2.58] Greatest in 24 hrs: 4.00 inches on the 1st/2nd WIND, mph Avg. uncorrected wind speed:  10.5 mph Avg. corrected wind speed:    11.0 mph Prevailing wind direction:   NW [11%] Peak gust and direction:     49 ENE on the 2nd SUNSHINE: Campbell-Stokes card minutes: 11490 of a possible 21582, or 53% Astronomical total minutes: 11965 of a possible 22423, or 53% -------------------------------------------------------------- Today's Observations: 7 A.M. Weather: Sky obscured, vertical visibility 300ft Temperature: 58F; Dew Point: 58F; Relative Humidity: 100% Wind: NE @ 8 kts Sea-level pressure: 1021.4 mb; 30.16 in. Hg: rising steadily Visibility: 3/4 mile, fog 6-hr Max temp: 59F 6-hr Min temp: 58F 24-hr Precip: 0.01 ins. BHO SA 1155 X W3 3/4F 214/58/58/0408/016/ R-B08E15B26E29B37E51/ 8//// 52009 6001/ 70001 10059 20058 10 A.M. Weather: Overcast stratus, few breaks in overcast overhead-E-SE Temperature: 61F; Dew Point: 60F; Relative Humidity: 94% Wind: ENE @ 7 kts Sea-level pressure: 1021.1 mb; 30.15 in Hg; rising then falling Visibility: 10 miles, thin fog 3-hr Precip: 0.00 ins. BHO SA 1455 E6 OVC 10 211/61/60/0607/015/ FEW BINOVC OVHD-E-SE THN F ALQDS/ 8/6// 50003 1 P.M. Weather: Scattered stratus fractus, scattered stratocumulus, thin broken cirrus Temperature: 65F, Dew point: 59F; Relative Humidity: 80% Wind: NNE @ 9 kts Sea-level pressure: 1019.5 mb; 30.11 in Hg; falling, then more slowly Visibility: 30 miles, hazy 6-hr Max temp: 67F 6-hr Min temp: 58F 6-hr Precip: 0.00 ins. BHO SA 1755 8 SCT 12 SCT E250 -BKN 30 195/65/59/0309/011/ HAZY/ 8/501 56016 10067 20058 SUMMARY FOR SUNDAY, OCTOBER 10, 2021 TEMPERATURE (DEGREES F) MAX.......62     NORMAL.....63 MIN.......54     NORMAL.....46 MEAN......58     NORMAL.....55 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL..............+3 TOTAL DEPARTURE FOR THE MONTH..........................+21 [+1.9 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022) TOTAL HEATING UNITS FOR YESTERDAY................7  DEPARTURE........-4 TOTAL HEATING UNITS FOR THE MONTH...............65  DEPARTURE.......-26 TOTAL HEATING UNITS FOR THE SEASON.............139  DEPARTURE.......-69 TOTAL HEATING UNITS LAST SEASON TO DATE........173  DEPARTURE.......-34 COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021) TOTAL COOLING UNITS FOR YESTERDAY................0  DEPARTURE.........0 TOTAL COOLING UNITS FOR THE MONTH................0  DEPARTURE........-5 TOTAL COOLING UNITS FOR THE SEASON.............714  DEPARTURE.......+39 TOTAL COOLING UNITS LAST SEASON TO DATE........831  DEPARTURE......-117 PEAK WIND GUST (MPH):                      Official...................22 E   @  6:26 P.M.                      AEROVANE (south tower).....21 E   @  6:30 P.M.                      VECTOR #2 (south tower)....22     @  6:26 P.M.                      DAVIS #2 (south tower).....21 ESE @  6:26 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 ENE @  8:31 P.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE..............16     @  6:27 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............16 E   @  6:27 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........10.1 E  [241 total miles]                      VECTOR #2..................10.7                      DAVIS #2...................10.9 E                      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.......0.01  DEPARTURE....-0.16 TOTAL PRECIPITATION FOR THE MONTH.............2.10  DEPARTURE....+0.42 TOTAL PRECIPITATION FOR THE YEAR.............49.00  DEPARTURE....+8.99 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   71/55/63/0/0.00/647/88           20 SE  AERO 20 SE  RMY N/A 09/21   75/55/65/+3/0.00/490/67          19 SSE AERO 20 SSE RMY N/A 09/22   75/65/70/+8/0.02/153/21          30 S   AERO 30 S   RMY N/A 09/23   78/65/72/+10/0.08/298/41         36 SSE AERO 37 SSE RMY N/A 09/24   75/62/69/+8/0.02/007/01          43 SSE AERO 45 SSE RMY N/A 09/25   74/59/67/+6/0.02/303/42          14 N   AERO 14 NNW RMY N/A 09/26   73/54/64/+4/0.57/510/71          33 WNW AERO 32 WNW RMY N/A 09/27   73/52/63/+3/T/529/74             30 SW  AERO 30 SW  RMY N/A 09/28   67/52/60/+1/0.40/028/04          27 SSW AERO 25 SSW RMY N/A TSTM 09/29   63/45/54/-5/0.00/568/80          25 NNW AERO 25 NNW RMY N/A 09/30   60/46/53/-6/0.01/354/50          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/-4/0.00/.../..          20 WNW AERO 20 WNW RMY N/A 10/02   73/47/60/+2/0.00/.../..          24 WSW AERO 23 WSW RMY N/A 10/03   65/55/60/+3/0.09/.../..          19 E   AERO 19 E   RMY N/A 10/04   59/51/55/-2/1.69/.../..          30 E   AERO 30 E   RMY N/A 10/05   58/50/54/-3/0.30/.../..          22 NNE AERO 23 NE  RMY N/A 10/06   69/50/60/+4/0.00/.../..          15 N   AERO 16 N   RMY N/A 10/07   73/55/64/+8/0.00/.../..          15 WSW AERO 15 W   RMY N/A 10/08   69/55/62/+7/T/.../..             24 ENE AERO 23 ENE RMY N/A 10/09   62/54/58/+3/0.01/.../..          23 E   AERO 23 E   RMY N/A 10/10   62/54/58/+3/T/.../..             22 E   AERO 21 E   RMY N/A 10/11   The low since midnight is 58F, the daily normal low is 46F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR OCTOBER 11 HIGH 80F IN 1919,1949 LOW 28F IN 1993 PRECIP 1.36 INCHES IN 2019 SNOWFALL (NONE) PEAK GUST 66e MPH WNW IN 1941 RECORDS FOR OCTOBER 12 HIGH 87F IN 1954 LOW 31F IN 1906 PRECIP 1.70 INCHES IN 1948 SNOWFALL TRACE IN 1904, 1941 PEAK GUST 55 MPH NW IN 1963 TODAY'S REPORT PREPARED BY: Matt Douglas