BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA WEDNESDAY, JUNE 17, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME ANOTHER DRY, FAIR WEATHER DAY WITH LIGHT AND VARIABLE WIND.... We observed mostly clear skies, only seeing some distant cirrostratus at each observation. Visibility was 75 miles on average, with the highest of 80 miles being seen at 1 P.M. Wind was light and variable, coming mostly from the east. The highest gust so far today is only 13 mph. Great Blue Hill is lacking in the rainfall department, being 0.67 inches below the monthly normal. While that quantity seems small, we are currently 3.54 inches below the normal amount for the year to date.   The high so far today is 77 degrees, this is a degree above the daily normal high of 76F. The low since midnight is 57F, which is a degree lower than the daily normal low of 58F. Today's Observations: 7 A.M. Weather: Few cirrostratus Temperature: 64F; Dew Point: 51F; Relative Humidity: 63% Wind: NNE at 3 kts, light and variable   Sea-level pressure: 30.33 ins. Hg: steady, then rising Visibility: 75 miles 6-hr Max temp: 64F 6-hr Min temp: 57F 24-hr Precip:  0.00 ins 24-hr Snowfall: 0.0 ins. BHO SA 1155 CLR 75 272/64/51/0703/033/ FEW CS ALQDS WND L/V/ 8/005 53011 10064 20057 10 A.M. Weather: Few cirrostratus Temperature: 72F; Dew Point: 52F; Relative Humidity: 49% Wind: E at 4 kts, light and variable Sea-level pressure: 30.32 ins. Hg: falling steadily Visibility: 80 miles 3-hr Precip:  0.00 ins. 3-hr Snowfall: 0.0 ins. BHO SA 1455 CLR 80 270/72/52/0904/032/ FEW CS ALQDS WND L/V/ 8/005 58002 1 P.M. Weather: Few cirrostratus Temperature: 75F; Dew Point: 55F; Relative Humidity: 50% Wind: NE at 8 kts Sea-level pressure: 30.27 ins. Hg: falling steadily Visibility: 75 miles 6-hr Max temp: 77F 6-hr Min temp: 64F 6-hr Precip:  0.00 ins. 6-hr Snowfall: 0.0 ins. BHO SA 1755 CLR 75 252/75/55/0608/027/ FEW CS ALQDS/ 8/005 58018 10077 20064 SUMMARY FOR TUESDAY, JUNE 16, 2020 TEMPERATURE (DEGREES F) MAX.....73   NORMAL.....75 MIN.....54   NORMAL.....57 MEAN....64   NORMAL.....66 DEPARTURE FROM 30-YEAR NORMAL..................-2 TOTAL DEPARTURE FOR THE MONTH.................+17 [+0.9 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY................1  DEPARTURE....... -1 TOTAL HEATING UNITS FOR THE MONTH...............40  DEPARTURE.......-16 TOTAL HEATING UNITS FOR THE SEASON............5852  DEPARTURE......-507 TOTAL HEATING UNITS LAST SEASON TO DATE.......6252  DEPARTURE......-400 COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY............... 0  DEPARTURE....... -2 TOTAL COOLING UNITS FOR THE MONTH...............42  DEPARTURE........+2 TOTAL COOLING UNITS FOR THE SEASON..............74  DEPARTURE.......+10 TOTAL COOLING UNITS LAST SEASON TO DATE.........32  DEPARTURE.......+42 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................18 E   AT  9:34 A.M.                      AERO.........................18 E   AT  9:32 A.M.                     ASOS.........................19 ENE AT  9:53 A.M.                    DAVIS........................18 E   AT  9:33 A.M. RMY 18 FASTEST MILE FOR YESTERDAY......................15 E   AT 10:42 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................15 ENE AT  9:53 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................15 E   AT 10:39 A.M. AVERAGE WIND SPEED AND DIRECTION...............8.0 ENE                                  ASOS........................8.5                    DAVIS.......................8.8 ENE [64 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE......-0.15                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........1.91  DEPARTURE......-0.67                          ASOS..............1.91 TOTAL PRECIPITATION FOR THE YEAR..........21.70  DEPARTURE......-3.54                          ASOS.............22.22 PRELIMINARY CLIMATE SUMMARY FOR JUNE 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 06/01  64/42/53/-9/T/0.0/.../..            28 WNW  AERO 29 WNW RMY 28 06/02  72/45/59/-3/..../0.0/.../..         28 W    AERO 27 W   RMY 28 06/03  79/55/67/+5/T/0.0/.../..            29 W    AERO 28 W   RMY 26 06/04  87/62/75/+12/..../0.0/.../..        26 W    AERO 25 S   RMY N/A 06/05  80/65/73/+10/..../0.0/.../..        28 SSW  AERO 28 SSW RMY N/A TSTM 06/06  86/57/72/+9/..../0.0/.../..         55 SW   AERO 59 SW  RMY 59  TSTM 06/07  68/54/61/-3/0.00/0.0/.../..         24 NW   AERO 24 NW  RMY N/A 06/08  77/51/64/0/0.00/0.0/.../..          25 W    AERO 24 W   RMY 25 06/09  77/60/69/+5/T/.../..                23 E    AERO 21 E   RMY N/A 06/10  70/58/64/-1/T/0.0/.../..            25 E    AERO 24 E   RMY N/A 06/11  71/64/68/+3/0.62/0.0/.../..         40 S    AERO 40 S   RMY 42 06/12  82/63/73/+8/0.00/.../..             26 W    AERO 25 W   RMY 27 06/13  71/53/62/-3/0.00/.../..             21 WNW  AERO 20 WNW RMY N/A             06/14  67/49/58/-8/0.00/.../..             21 E    AERO 21 ENE RMY 21 06/15  67/53/60/-6/5/0/.../..              21 NE   AERO 16 ENE RMY 20 06/16  73/54/64/-2/0.00/.../..             18 E    AERO 18 E   RMY 18 06/17 The low since midnight is 57F, 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 JUNE 17 HIGH 93F IN 1894 LOW 44F IN 1920 PRECIP 2.79 INS 2001 (Sub-Tropical storm ALLISON) PEAK GUST 55e MPH S IN 1977 RECORDS FOR JUNE 18 HIGH 93F IN 1929,1994 LOW 39F IN 1920 PRECIP 3.36 INS 1998 PEAK GUST 48e MPH W IN 1943 TODAY'S REPORT PREPARED BY: Benjamin Turner