BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA TUESDAY, JUNE 30, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME UNSETTLED WEATHER CONTINUES.... Clouds have been the theme today with periods of drizzle and very light rain at times. As a result temperatures have remained on the cool side for this time of year, holding in the 60s so far today. Rainfall from yesterday's thunderstorm and overnight drizzle amounted to 1.48" as measured at 7 A.M. this morning. Since then only a trace has been measured through 1 P.M., however light rain started just after the observation. The high so far today is 67 degrees, this is 12 degrees below the daily normal high of 79F. The low since midnight is 62F, which is 1 degrees above the daily normal low of 61F. Rainfall for the month is now up to 7.56", which has now set a surplus for the month of 3.35". The yearly deficit is now erased, going from near -4 inches 2 days ago to to +0.48" as of 7 A.M. this morning. Impressive in such a short time! Today's Observations: 7 A.M. Weather: Sky partially obscured, overcast stratus fractus Temperature: 63F; Dew Point: 63F; Relative Humidity: 100% Wind: NNE at 5 kts, wind light Sea-level pressure: 29.92 ins. Hg: rising, then more slowly Visibility: 2 miles, fog; visibility 1 mile N, 4 S 6-hr Max temp: 63F 6-hr Min temp: 62F 24-hr Precip: 1.48 ins. 24-hr Frozen:  0.0 ins. BHO SA 1155 –X E1 OVC 2F 131/63/63/0205/992/ STFRA OCCLY DRFTG OVR SMT VSBY N 1 S 4 LEUKN WND LGT/ 8/6// 51008 6//// 70148 10063 20062 10 A.M. Weather: Overcast stratus, light drizzle   Temperature: 64F; Dew Point: 62F; Relative Humidity: 96% Wind: NE at 4 kts, wind light Sea-level pressure: 29.94 ins. Hg: rising, then more slowly Visibility: 15 miles, 4 miles N, 6 E 3-hr Precip: Trace 3-hr Frozen:   0.0 ins. BHO SA 1455 E1 OVC 15L- 139/64/62/0404/994/ THN F ALQDS VSBY N 9 E 6 LB40 WND LGT/ 8/6// 51008 6000 1 P.M. Weather: Broken stratus, overcast stratocumulus, rain showers NW-NE moving W Temperature: 66F; Dew Point: 64F; Relative Humidity: 93% Wind: NE at 4 kts, wind light Sea-level pressure: 29.93 ins. Hg: rising then falling Visibility: 20 miles, 4 miles NW-NE 6-hr Max temp: 67F 6-hr Min temp: 63F 6-hr Precip: Trace 6-hr Frozen:   0.0 ins. BHO SA 1755 E10 BKN 35 OVC 20 135/66/64/0504/993/ RW NW-NE MVNG W VSBY NW-NE 4 WND LGT/ 8/6// 58004 6000/ 10067 20063 SUMMARY FOR MONDAY, JUNE 29, 2020 TEMPERATURE (DEGREES F) MAX.....71   NORMAL.....79 MIN.....61   NORMAL.....61 MEAN....66   NORMAL.....70 DEPARTURE FROM 30-YEAR NORMAL................. -4 TOTAL DEPARTURE FOR THE MONTH.................+83 [+2.7 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY................0  DEPARTURE....... -1 TOTAL HEATING UNITS FOR THE MONTH...............40  DEPARTURE.......-33 TOTAL HEATING UNITS FOR THE SEASON............5852  DEPARTURE......-523 TOTAL HEATING UNITS LAST SEASON TO DATE.......6254  DEPARTURE......-402 COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY................ 1  DEPARTURE....... -5 TOTAL COOLING UNITS FOR THE MONTH...............152  DEPARTURE.......+53 TOTAL COOLING UNITS FOR THE SEASON..............184  DEPARTURE.......+61 TOTAL COOLING UNITS LAST SEASON TO DATE..........87  DEPARTURE.......+95 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................18 NE  AT 10:22 A.M.                      AERO.........................18 NE  AT 10:17 A.M.                     ASOS.........................19 ENE AT  1:06 P.M.                    DAVIS........................19 E   AT  1:05 P.M RMY 18 FASTEST MILE FOR YESTERDAY......................13 NE  AT 10:26 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................14 ENE AT  1:06 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................14 E   AT  1:06 P.M. AVERAGE WIND SPEED AND DIRECTION...............6.3 ENE                                ASOS....................... 6.6                    DAVIS...................... 6.6 ENE [060 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....1.48  DEPARTURE......+1.37                          ASOS..............1.49 TOTAL PRECIPITATION FOR THE MONTH..........7.56  DEPARTURE......+3.35                          ASOS..............7.70 TOTAL PRECIPITATION FOR THE YEAR..........27.35  DEPARTURE......+0.48                          ASOS.............28.01 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/0.0/.../..            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/+8/0.00/0.0/.../..         26 W    AERO 25 W   RMY 27 06/13  71/53/62/-3/0.00/0.0/.../..         21 WNW  AERO 20 WNW RMY N/A             06/14  67/49/58/-8/0.00/0.0/.../..         21 E    AERO 21 ENE RMY 21 06/15  67/53/60/-6/5/0/0.0/.../..          21 NE   AERO 16 ENE RMY 20 06/16  73/54/64/-2/0.00/0.0/.../..         18 E    AERO 18 E   RMY 18 06/17  78/57/68/+1/0.00/0.0/.../..         20 S    AERO 20 S   RMY 20 06/18  86/59/73/+6/0.00/0.0/.../..         22 S    AERO 22 SSW RMY 22 06/19  86/66/76/+9/0.00/0.0/.../..         22 S    AERO 22 S   RMY 21 06/20  90/65/78/+10/0.00/0.0/.../..        22 S    AERO 21 S   RMY 21 06/21  90/66/78/+10/0.83/0.0/.../..        33 ESE  AERO 35 ESE RMY 33  TSTM 06/22  77/65/71/+3/0.00/0.0/.../..         15 E    AERO 17 S   RMY 14 06/23  85/65/75/+7/0.00/0.0/.../..         27 S    AERO 24 S   RMY 26 06/24  84/66/75/+6/0.00/0.0/.../..         25 S    AERO 24 S   RMY 25 06/25  84/63/74/+5/0.00/0.0/.../..         29 W    AERO 29 W   RMY 29 06/26  83/65/74/+5/0.02/0.0/.../..         25 S    AERO 25 S   RMY 27 06/27  82/65/74/+5/0.05/0.0/.../..         21 S    AERO 20 S   RMY 20 06/28  84/62/73/+3/3.27/0.0/.../..         35 W    AERO 33 N   RMY 37  TSTM 06/29  71/61/66/-4/..../0.0/.../..         18 NE   AERO 18 NE  RMY 18  TSTM 06/30  The low since midnight is 62F, the daily normal low is 61F Record rainfall on the 28th of 3.27". Old record 2.09" in 1938 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR JUNE 30 HIGH 94F IN 1964 LOW 47F IN 1919 PRECIP 3.04 INS IN 1921 PEAK GUST 51 MPH WNW IN 1957 RECORDS FOR JULY 1 HIGH 98F IN 1964 LOW 44F IN 1988 [RECORD FOR MONTH] PRECIP 4.46 INS IN 1915 [RECORD FOR MONTH] PEAK GUST 52 MPH WNW IN 1974 TODAY'S REPORT PREPARED BY: Matt Douglas