BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, JUNE 5, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME INTERMITTENT DRIZZLE ACCOMPANY A MILD AND MUGGY FRIDAY... We began the day collecting 0.13 inches of beneficial overnight rainfall. On and off periods of drizzle during the morning tacked on another 0.01 inches by 1 PM. With dew points in the mid to upper-60s, the air has been noticeably muggier than yesterday. This has created a mix bag of distant fog and haze limiting visibility to an average of 25 miles. Winds have remained on the light side with most gusts in the 15-20 MPH range. The high so far today is 74 degrees, this is 2 degrees above the daily normal high of 72F. The low since midnight is 65F, which is 11 degrees above the daily normal low of 54F. Today's Observations: 7 A.M. Weather: Overcast Altostratus & Altocumulus; few stratus fractus SE-SW; Very light drizzle Temperature: 67F; Dew Point: 64F; Relative Humidity: 92% Wind: SW at 6 kts   Sea-level pressure: 29.88 ins. Hg: falling, then rising Visibility: 35 miles (20 miles SE-SW), distant fog 6-hr Max temp: 67F 6-hr Min temp: 65F 24-hr Precip:  0.13 ins. 24-hr Snowfall: 0.0 ins. BHO SA 1155 E70 OVC 35L- 120/67/64/2206/988/ FEW SF DSNT SE-SW VSBY 20 MI SE-SW PCPN VRY LGT DSNT FG ALQDS/ 8/72/ 55014 70013 10067 20065 10 A.M. Weather: Overcast Stratus, Very light drizzle Temperature: 67F; Dew Point: 65F; Relative Humidity: 93% Wind: SSW at 8G18 kts Sea-level pressure: 29.91 ins. Hg: rising, then falling Visibility: 20 miles, distant fog 3-hr Precip:  0.01 ins. 3-hr Snowfall: 0.0 ins. BHO SA 1455 E10 OVC 20L- 130/67/65/2008G18/991/ PCPN VRY LGT DSNT FG ALQDS/ 8/6// 50010 6001 1 P.M. Weather: Broken Cumulus/Stratocumulus; (thin) Overcast Cirrostratus Temperature: 73F; Dew Point: 67F; Relative Humidity: 81% Wind: SSW at 11G18 kts Sea-level pressure: 29.89 ins. Hg: falling, then more rapidly Visibility: 25 miles, hazy 6-hr Max temp: 74F 6-hr Min temp: 65F 6-hr Precip:  0.01 ins. 6-hr Snowfall: 0.0 ins. BHO SA 1755 E18 BKN E250 –OVC 25 121/73/67/2011G18/989/ SUN DMLY VSBL HAZY/ 8/805 58009 6001 10074 20065 SUMMARY FOR THURSDAY, JUNE 4, 2020 TEMPERATURE (DEGREES F) MAX.....87   NORMAL.....72 MIN.....62   NORMAL.....54 MEAN....75   NORMAL.....63 DEPARTURE FROM 30-YEAR NORMAL.................+12 TOTAL DEPARTURE FOR THE MONTH..................+5 [+1.1 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY................0  DEPARTURE........-4 TOTAL HEATING UNITS FOR THE MONTH...............18  DEPARTURE.........0 TOTAL HEATING UNITS FOR THE SEASON............5830  DEPARTURE......-491 TOTAL HEATING UNITS LAST SEASON TO DATE.......6234  DEPARTURE......-404 COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY...............10  DEPARTURE........+8 TOTAL COOLING UNITS FOR THE MONTH...............12  DEPARTURE.........5 TOTAL COOLING UNITS FOR THE SEASON..............44  DEPARTURE.......+13 TOTAL COOLING UNITS LAST SEASON TO DATE..........8  DEPARTURE.......+36 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................26 W   AT 12:28 P.M.                      AERO.........................25 S   AT  4:50 P.M.                     ASOS.........................26 S   AT  4:51 P.M.                    DAVIS........................26 W   AT 12:28 P.M. RMY N/A FASTEST MILE FOR YESTERDAY......................18 SSW AT  3:26 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................18 S   AT  3:59 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................18 SSW AT  3:26 P.M. AVERAGE WIND SPEED AND DIRECTION.................10.0 W                                  ASOS..........................10.2                    DAVIS.........................9.9 SW [230 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.13 DEPARTURE.......-0.04                          ASOS..............0.13 TOTAL PRECIPITATION FOR THE MONTH..........0.14  DEPARTURE......-0.52                          ASOS..............0.14 TOTAL PRECIPITATION FOR THE YEAR..........19.93  DEPARTURE......-3.39                          ASOS.............20.45 PRELIMINARY CLIMATE SUMMARY FOR MAY CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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 05/01  64/52/58/+5/..../0.0/000/00         46 SSE  AERO 44 SSE RMY N/A 05/02  70/42/56/+3/..../0.0/729/86         41 NW   AERO 40 NW  RMY N/A 05/03  78/55/67/+14/0.00/0.0/613/72        35 SSW  AERO 35 SSW RMY 36 05/04  72/45/59/+5/T/0.0/247/29            37 NW   AERO 40 WNW RMY 39   05/05  60/40/50/-4/0.00/0.0/821/96         31 NW   AERO 32 NW  RMY N/A 05/06  57/38/48/-6/T/0.0/498/58            24 ESE  AERO 22 ENE RMY 22 05/07  63/37/50/-5/0.00/0.0/576/67         30 WSW  AERO 29 WSW RMY N/A 05/08  57/40/49/-6/..../0.0/328/38         31 W    AERO 32 W   RMY N/A 05/09  44/32/38/-17/..../T/484/56          52 W    AERO 53 W   RMY 54 05/10  59/31/45/-10/0.00/0.0/763/88        46 W    AERO 46 W   RMY 49 05/11  65/43/54/-2/0.22/0.0/322/37         39 S    AERO 43 S   RMY 41 05/12  55/37/46/-10/0.00/0.0/801/92        37 W    AERO 37 W   RMY 37 05/13  59/32/46/-10/0.00/0.0/864/99        37 WNW  AERO 37 WNW RMY 38 05/14  70/40/55/-2/0.00/0.0/831/95         29 W    AERO 26 W   RMY 27 05/15  78/50/64/+7/..../0.0/535/61         40 WSW  AERO 40 WSW RMY 43 05/16  69/47/58/+1/..../0.0/730/83         31 NW   AERO 31 NW  RMY 32 05/17  67/47/57/0/0.00/0.0/132/15          22 SSW  AERO N/A    RMY 21 05/18  60/47/54/-4/T/0.0/053/06            24 W    AERO 22 ENE RMY N/A 05/19  56/45/51/-7/0.00/0.0/797/90         35 ENE  AERO 34 ENE RMY 32 05/20  63/43/53/-5/0.00/0.0/869/98         22 ESE  AERO 20 SE  RMY 19 05/21  76/42/59/0/0.00/0.0/862/97          26 S    AERO 25 S   RMY 25 05/22  82/50/66/+7/0.00/0.0/864/97         29 W    AERO 29 W   RMY 28 05/23  67/44/56/-3/0.02/0.0/187/21         42 ENE  AERO 43 ENE RMY 40 05/24  58/43/51/-8/T/0.0/822/92            27 ENE  AERO 24 ENE RMY N/A 05/25  66/46/56/-4/0.00/0.0/.../..         18 ENE  AERO 18 ENE RMY N/A 05/26  82/56/69/+9/0.00/0.0/.../..         21 S    AERO 21 S   RMY 21 05/27  84/59/72/+12/0.00/0.0/.../..        31 SSW  AERO 31 SSW RMY 31   05/28  77/63/70/+9/..../0.0/.../..         33 SSW  AERO 33 S   RMY 33 05/29  78/66/72/+11/..../.../.../..        41 SSW  AERO 41 SSW RMY 43 05/30  79/63/71/+10/..../.../.../..        30 S    AERO 30 S   RMY N/A 05/31  67/45/56/-5/0.00/0.0/.../..         33 WNW  AERO 33 WNW RMY 32 DAILY RECORDS FOR MAY 2020 5/13/2020: NEW RECORD LOW OF 32F, REPLACING 35F SET IN 1914 AND 2005 PRELIMINARY CLIMATE SUMMARY FOR JUNE CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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/..../.../..             28 W    AERO 27 W   RMY 28 06/03  79/55/67/+5/T/.../..                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 The low since midnight is 65F, the daily normal low is 54F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR JUNE 5 HIGH 95F IN 1930 LOW 41F IN 1891 PRECIP 2.83 INS IN 1982 PEAK GUST 57 MPH NNW IN 1988 RECORDS FOR JUNE 6 HIGH 95F IN 1925 LOW 42F IN 1885, 1894, 1920, 1945 PRECIP 3.61 INS IN 2000 PEAK GUST 58 MPH NE IN 2000 TODAY'S REPORT PREPARED BY: Andrew Swanson