BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY TUESDAY, JUNE 2, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME A MIX OF SUN AND CLOUDS TODAY WITH WARMER TEMPERATURES... A few light rain showers moved through last evening bringing only a trace of rain to the hill. Otherwise continued dry weather has been the dominant theme. The yearly precipitation departure is currently at 3.05 inches below normal. A mix of sun and clouds has been the theme again today with warmer temperatures and a mainly light breeze out of varying directions. The air isn't as dry as yesterday however with dew points ranging from the upper 30s early this morning to the mid 40s early this afternoon.   Visibility has been very good for this time of year starting the day at 70 miles, but has slipped a bit to 60 miles this afternoon, likely due to a bit more moisture in the air compared to yesterday. The high so far today is 69 degrees, this is 2 degrees below the daily normal high of 71F. The low since midnight is 45F, which is 8 degrees below the daily normal low of 53F. Today's Observations: 7 A.M. Weather: Broken altocumulus/altocumulus castellanus, thin broken cirrus Temperature: 53F; Dew Point: 39F; Relative Humidity: 58% Wind: E at 2 kts, wind light and variable   Sea-level pressure: 30.06 ins. Hg: rising, then falling Visibility: 70 miles 6-hr Max temp: 53F 6-hr Min temp: 45F 24-hr Precip: Trace 24-hr Snowfall: 0.0 ins. BHO SA 1155 E75 BKN 250 –BKN 70 179/53/39/0902/006/ WND L/V/ 8/081 50001 70000 10053 20045 10 A.M. Weather: Broken altocumulus, thin broken cirrus Temperature: 62F; Dew Point: 40F; Relative Humidity: 45% Wind: S at 3 kts, wind light and variable Sea-level pressure: 30.01 ins. Hg: falling, then more rapidly Visibility: 70 miles 3-hr Precip:  0.00 ins. 3-hr Snowfall: 0.0 ins. BHO SA 1455 E100 BKN 250 –BKN 70 162/62/40/1903/001/ FEW CU N-NNE AND SE-SSE WND L/V/ 8/291 58017 1 P.M. Weather: Scattered cumulus, broken altocumulus, thin broken cirrus, altocumulus standing lenticular all quadrants Temperature: 69F; Dew Point: 45F; Relative Humidity: 41% Wind: WSW at 10G17 kts, wind SSW variable W Sea-level pressure: 29.93 ins. Hg: falling, then more rapidly Visibility: 60 miles 6-hr Max temp: 69F 6-hr Min temp: 53F 6-hr Precip:  0.00 ins. 6-hr Snowfall: 0.0 ins. BHO SA 1755 60 SCT E110 BKN 250 –BKN 60 135/69/45/2510G17/993/ ACSL ALQDS WND 21V28/ 8/241 58027 10069 20053 SUMMARY FOR MONDAY, JUNE 1, 2020 TEMPERATURE (DEGREES F) MAX.....64   NORMAL.....71 MIN.....42   NORMAL.....53 MEAN....53   NORMAL.....62 DEPARTURE FROM 30-YEAR NORMAL................. -9 TOTAL DEPARTURE FOR THE MONTH................. -9 [-9.2 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............12  DEPARTURE........+7 TOTAL HEATING UNITS FOR THE MONTH.............. 12  DEPARTURE....... +7 TOTAL HEATING UNITS FOR THE SEASON............5824  DEPARTURE......-484 TOTAL HEATING UNITS LAST SEASON TO DATE.......6220  DEPARTURE......-396 COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY................0  DEPARTURE........-2 TOTAL COOLING UNITS FOR THE MONTH............... 0  DEPARTURE....... -2 TOTAL COOLING UNITS FOR THE SEASON..............32  DEPARTURE........+6 TOTAL COOLING UNITS LAST SEASON TO DATE..........8  DEPARTURE.......+24 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................28 WNW AT  6:46 P.M.                      AERO.........................29 WNW AT  6:46 P.M.                     ASOS.........................27 WNW AT  6:44 P.M.                    DAVIS........................29 WNW AT 12:47 P.M. RMY 28 FASTEST MILE FOR YESTERDAY......................21 WNW AT 12:42 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................18 WNW AT  8:42 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................21 W   AT 12:48 P.M. AVERAGE WIND SPEED AND DIRECTION................ 9.7 WNW                                  ASOS......................... 9.8                    DAVIS........................10.1 WNW [301 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M...TRACE  DEPARTURE......-0.16                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH.........TRACE  DEPARTURE......-0.33                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE YEAR..........19.79  DEPARTURE......-3.05                          ASOS.............20.31 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 The low since midnight is 45F, the daily normal low is 53F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR JUNE 2 HIGH 91F IN 1895 LOW 41F IN 1907, 1929 PRECIP 2.36 INS IN 1982 SNOWFALL TRACE IN 1907 (IP) PEAK GUST 63 MPH NW IN 2000 RECORDS FOR JUNE 3 HIGH 98F IN 1919 LOW 38F IN 1929 PRECIP 2.40 INS 2006 PEAK GUST 47 MPH NW IN 1998 TODAY'S REPORT PREPARED BY: Matt Douglas