BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SATURDAY, JULY 3, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0412E SUNSET:  1924E *PLEASE NOTE AS OF JULY 1, 2021, WE ARE USING 1991-2020 CLIMATOLOGICAL NORMALS (old set 1981-2010 is retired)* COOLER WITH SOME MUCH-NEEDED RAINFALL AND FOGGY CONDITIONS.... Today we've experienced lower than normal temperatures, which is a relief from the heat wave earlier on this week. Overnight rainfall totaled 0.41 inches, with an additional 0.27 inches falling between 7 A.M. and 1 P.M. Wind is northeasterly at an average speed of 15 mph and a max gust of 31 mph. As far as the skies and visibility are concerned, we are socked in fog. A 1/2 mile is the best we've "seen" so far. Intermittent light rain has remained the theme. Temperature has only varied 2 degrees over the course of the day due to the new airmass, overcast skies, and the wind off the ocean. The high so far today is 56F, 25 degrees below the daily average of 81F. This barely whiffs the low maximum record of 55F, set in 1914. The low so far today is 54F, 9 degrees below the daily average of 63F. PRELIMINARY STATS FOR JUNE 2021 TEMPERATURE, Deg. F Avg. Max. 80.9 [+5.9] Avg. Min. 60.4 [+3.3] Mean      70.9 [+4.6] 24-hour corrected mean: 70.0 Max. for month: 95F on the 29th Min. for month: 50F on the 1st HEATING DEGREE DAYS Total heating units:     19 [-54] Total for the season:  5597 [-725] Total for last season: 5852 COOLING DEGREE DAYS Total cooling units:     187 [+75] Total for the season:    197 [+82] Total for last season:   184 PRECIPITATION, Inches Total: 2.72 [-1.59] Greatest in 24 hrs: N/A WIND, mph Avg. uncorrected wind speed: 10.4 mph Avg. corrected wind speed:   10.6 mph Prevailing wind direction:   SSW [22%] Peak gust and direction:     51 NW on the 30th SUNSHINE: Campbell-Stokes card minutes: N/A Astronomical total minutes: N/A Today's Observations: 7 A.M. Weather: Light Rain, Fog (Sky Obscured, Vertical Visibility 300 ft) Temperature: 56F; Dew Point: 56F; Relative Humidity: 100% Wind: ENE @ 11G22 kts Sea-level pressure: 29.84 in. Hg; rising unsteadily Visibility: 1/2 miles, fog 6-hr Max temp: 56F 6-hr Min temp: 55F 24-hr Precip: 0.41 ins. BHO SA 1155 X W3 1/2R-F 105/56/56/0711G22/984/ 8//// 70041 52005 10056 20055 10 A.M. Weather: Light Rain, Fog (Sky Obscured, Vertical Visibility 300 ft) Temperature: 55F; Dew Point: 55F; Relative Humidity: 100% Wind: NE @ 12G21 kts Sea-level pressure: 29.85 in Hg; steady, then rising Visibility: 1/2 mile, fog 3-hr Precip: 0.14 ins. BHO SA 1455 X W3 1/2R-F 108/55/55/0512G21/985/ 8//// 6014/ 53003 1 P.M. Weather: Light Drizzle, Fog (Sky Obscured, Vertical Visibility 300 ft) Temperature: 54F, Dew point: 54F; Relative Humidity: 100% Wind: NE @ 16G31 kts Peak Wind: 31 MPH (27 kts) ENE @ 12:54 PM Sea-level pressure: 29.83 in Hg; falling then steady Visibility: 1/2 mile, fog 6-hr Max temp: 56F 6-hr Min temp: 54F 6-hr Precip: 0.27 ins. BHO SA 1755 X W3 1/2L-F 100/54/54/0516G31/983/ PK WND 0527/54/ 8//// 6027/ 55008 10056 20054 SUMMARY FOR FRIDAY, JULY 2, 2021 TEMPERATURE (DEGREES F) MAX.......65     NORMAL.....80 MIN.......55     NORMAL.....62 MEAN......60     NORMAL.....71 DEPARTURE FROM 30-YEAR (1981-2010) NORMAL.........-11 TOTAL DEPARTURE FOR THE MONTH......................-9 [-4.7 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022) TOTAL HEATING UNITS FOR YESTERDAY............... 5  DEPARTURE.......+5 TOTAL HEATING UNITS FOR THE MONTH................5  DEPARTURE.......+4 TOTAL HEATING UNITS FOR THE SEASON...............5  DEPARTURE.......+4 TOTAL HEATING UNITS LAST SEASON TO DATE..........0  DEPARTURE.......+5 COOLING DEGREE DAYS (SEASON: JAN 2021 THRU DEC 2021) TOTAL COOLING UNITS FOR YESTERDAY................0  DEPARTURE.......-7 TOTAL COOLING UNITS FOR THE MONTH................8  DEPARTURE.......-5 TOTAL COOLING UNITS FOR THE SEASON.............234  DEPARTURE......+82 TOTAL COOLING UNITS LAST SEASON TO DATE........198  DEPARTURE......+36 PEAK WIND GUST (MPH):                      420C/Official..............37 NE  @ 12:11 P.M.                      AEROVANE (south tower).....36 NE  @ 11:52 P.M.                      ASOS............OUT OF SERVICE D/T RENOVATIONS                      VECTOR #1..................39     @ 12:11 P.M.                      VECTOR #2 (south tower)....38     @ 12:11 P.M.                      DAVIS #1...................36 ENE @ 12:12 P.M.                      DAVIS #2 (south tower).....34 NE  @ 12:12 P.M.                      RMY........................39     @ 12:11 P.M.                      MERLIN.....................34 FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL..................28 NE  @ 12:12 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE........OUT OF SERVICE D/T RENOVATIONS MAXIMUM 2-MINUTE VECTOR #1 AVERAGE..............24     @ 12:12 P.M. MAXIMUM 2-MINUTE DAVIS #1 AVERAGE...............25 ENE @ 12:13 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............25 ENE @ 12:13 P.M. MAXIMUM 2-MINUTE RMY AVERAGE....................23 E   @ 12:12 P.M. AVERAGE WIND SPEED AND DIRECTION:                      CONTACTING/OFFICIAL......14.8 NE  [354 total miles]                      ASOS.....................OUT OF SERVICE D/T RENOVATIONS                      VECTOR #1................14.3                      DAVIS #1.................15.1 ENE                      DAVIS #2.................15.0 ENE                      RMY......................13.8 E PRECIPITATION (INCHES) THROUGH THIS MORNING (EST): TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.......0.41  DEPARTURE....+0.30 TOTAL PRECIPITATION FOR THE MONTH.............2.44  DEPARTURE....+2.22 TOTAL PRECIPITATION FOR THE YEAR.............25.82  DEPARTURE....-1.37       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   74/50/62/0/0.00/425/47            20 WSW  AERO 24 WSW  RMY 22 06/02   80/55/68/+6/0.00/553/61           28 S    AERO 25 S    RMY 28 06/03   73/56/65/+3/0.01/073/08           29 SSW  AERO 29 SSW  RMY 29 06/04   77/61/69/+6/0.02/054/06           23 SW   AERO 25 WSW  RMY 25 TSTM 06/05   87/60/74/+11/0.00/801/88          32 SSW  AERO 37 SSW  RMY 35 06/06   91/69/80/+17/0.00/819/90          30 WSW  AERO 31 WSW  RMY 32 06/07   92/69/81/+17/0.00/838/92          31 SSW  AERO 35 SSW  RMY 34 06/08   92/69/81/+17/0.06/456/50          24 WSW  AERO 25 WSW  RMY 27 TSTM 06/09   88/70/79/+15/0.02/530/58          21 N    AERO 23 NNW  RMY 23 06/10   70/53/62/-3/0.00/795/87           28 NE   AERO 28 NE   RMY 28 06/11   70/51/61/-4/0.13/411/45           21 SSE  AERO 22 SSE  RMY 22 06/12   72/53/63/-2/0.43/430/47           20 WSW  AERO 18 WSW  RMY 20 06/13   82/56/69/+4/0.00/860/94           26 SSW  AERO 29 SSW  RMY 29 06/14   65/56/61/-5/0.63/027/03           28 S    AERO 30 SSE  RMY 29 06/15   77/61/69/+3/T/357/39              18 NE   AERO 20 NE   RMY 18 TSTM 06/16   73/56/65/-1/0.00/769/84           27 NNW  AERO 31 NNW  RMY 27 06/17   77/52/65/-2/0.00/880/96           21 WNW  AERO 21 NW   RMY 23 06/18   82/56/69/+2/T/789/86              26 WSW  AERO 28 WSW  RMY 30 06/19   86/63/75/+8/0.09/504/55           30 SW   AERO 32 SW   RMY 32 06/20   85/63/74/+6/0.00/816/89           24 S    AERO 25 SSW  RMY 25 06/21   83/65/74/+6/0.00/.../..           37 SSW  AERO 39 SSW  RMY 39 06/22   84/58/71/+3/0.68/.../..           30 NW   AERO 31 NW   RMY 31 TSTM 06/23   73/52/63/-5/0.00/.../..           25 NW   AERO 24 NW   RMY 26 06/24   76/58/67/-2/T/.../..              25 SE   AERO 24 SE   RMY 25 06/25   71/57/64/-5/0.11/.../..           23 S    AERO 23 S    RMY 23 06/26   81/61/71/+2/0.00/.../..           36 SSW  AERO 37 SSW  RMY 38 06/27   85/70/78/+9/0.00/.../..           38 SW   AERO 39 SW   RMY 42 06/28   93/70/82/+12/0.00/.../..          28 SW   AERO 28 SW   RMY 28 06/29   95/73/84/+14/T/.../..             26 W    AERO 30 W    RMY 27 TSTM 06/30   94/69/82/+12/0.54/.../..          51 NW   AERO 53 NW   RMY 56 TSTM PRELIMINARY CLIMATE SUMMARY FOR JULY 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 07/01   80/65/73/+2/..../.../..           22 W   AERO 20 WSW   RMY 21 07/02   65/55/60/-11/..../.../..          37 NE  AERO 36 NE    RMY 39 07/03 The low since midnight is 55F, the daily normal low is 63F RECORDS FOR JUNE: JUNE 7: Record high minimum temperature of 69F,         Surpasses previous record of 66F set in 1922 and 1953 JUNE 29: Record high maximum temperature of 95F,         Surpasses previous record of 94F set in 1933 JUNE 29: Record high minimum temperature of 73F,         Surpasses previous record of 71F set in 1999 JUNE 30: Record high maximum temperature of 94F,         Ties previous record of 94F set in 1964 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated RECORDS FOR JULY 3 HIGH 99F IN 1911 LOW 47F IN 1914 PRECIP 1.36 IN 1985 PEAK GUST 52 MPH NW IN 1963 RECORDS FOR JULY 4 HIGH 99F IN 1911 LOW 48F IN 1914 PRECIP 2.48 IN 2014 PEAK GUST 50e MPH WNW IN 1949 TODAY'S REPORT PREPARED BY: Benjamin Turner