BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA MONDAY, JUNE 7, 2021 ALL TIMES ARE IN EASTERN STANDARD TIME SUNRISE: 0408E SUNSET:  1919E ANOTHER HOT AND HUMID DAY ON TOP BLUE HILL, BUT STILL NO OFFICIAL HEAT WAVE UP HERE, YET.... The hazy, hot, and humid conditions continue today with readings getting into the low 90s for the second day in row. Unlike many other nearby stations, we failed to reach 90 on Saturday, as such we have not officially reached the 3 consecutive days required to be called a heat wave. Tomorrow will likely seal the deal! We have likely set a new record high minimum for today's date. The low so far today is 69F, the previous record was 66F set back in 1922 and 1953. The humidity has definitely been more noticeable today with the dew point reaching 70F for a time this morning, and again rising to the 70F degree mark by mid afternoon. Mixing along with a WSW wind for a time early this afternoon allowed the dew point to drop to the low 60s. The wind has now shifted to the S and SSW, thus the dew point has risen once again. Winds started off light this morning, but have increased as we progressed through mid and late morning with gusts reaching upwards of 30 mph. Visibility has been limited all day due to haziness, only averaging 20-25 miles. The record high for today is 93F set in 1999, however we have fallen short of that mark today. The high so far today is 92F, which is 19 degrees above the normal high of 73F. The low since midnight is 69F, which is 14 degrees above the daily normal low of 55F. PRELIMINARY STATS FOR MAY 2021 TEMPERATURE, Deg. F Avg. Max. 68.1 [+1.8] Avg. Min. 48.0 [+0.2] Mean      58.1 [+1.0] 24-hour corrected mean: 57.7 Max. for month: 87F on the 22nd, 23rd Min. for month: 38F on the 1st HEATING DEGREE DAYS Total heating units:    237 [-31] Total for the season:  5578 [-725] Total for last season: 5812 PRECIPITATION, Inches Total: 5.60 [+1.49] Greatest in 24 hrs: N/A WIND, mph Avg. uncorrected wind speed: 10.9 mph Avg. corrected wind speed:   11.4 mph Prevailing wind direction:   WNW [16%] Peak gust and direction:     44 ENE on the 29th SUNSHINE: Campbell-Stokes card minutes: 14478 minutes of a possible 26226 or 55% Astronomical total minutes: 14977 minutes of a possible 27188 or 55% Today's Observations: 7 A.M. Weather: Clear, few cirrus distant NE-E Temperature: 75F; Dew Point: 65F; Relative Humidity: 72% Wind: SW @ 7 kts Sea-level pressure: 30.09 in. Hg; rising, then more rapidly Visibility: 20 miles, hazy 6-hr Max temp: 75F 6-hr Min temp: 69F 24-hr Precip: 0.00 ins. BHO SA 1155 CLR 20 188/75/65/2307/009/ FEW CI DSNT NE-E HAZY/ 8/001 53010 10075 20069 10 A.M. Weather: Clear, few cumulus SW-NW-N, few altocumulus distant E-SE, few cirrus distant N-NE Temperature: 86F; Dew Point: 70F; Relative Humidity: 59% Wind: SW @ 7 kts Sea-level pressure: 30.09 in Hg; rising, then falling Visibility: 20 miles, hazy 3-hr Precip: 0.00 ins. BHO SA 1455 CLR 20 189/86/70/2307/009/ FEW CU SW-NW-N FEW AC DSNT E-SE FEW CI DSNT N-NE HAZY/ 8/231 50001 1 P.M. Weather: Scattered cumulus Temperature: 91F, Dew point: 63F; Relative Humidity: 40% Wind: WSW @ 14G21 kts Sea-level pressure: 30.04 in Hg; falling, then more rapidly Visibility: 25 miles, hazy 6-hr Max temp: 91F 6-hr Min temp: 75F 6-hr Precip: 0.00 ins. BHO SA 1755 50 SCT 25 172/91/63/2414G21/004/ HAZY/ 8/200 58017 10091 20075 SUMMARY FOR SUNDAY, JUNE 6, 2021 TEMPERATURE (DEGREES F) MAX.......91     NORMAL.....72 MIN.......69     NORMAL.....54 MEAN......80     NORMAL.....63 DEPARTURE FROM 30-YEAR (1981-2010) NORMAL.......+17 TOTAL DEPARTURE FOR THE MONTH...................+43 [+7.0 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL THRU JUN) TOTAL HEATING UNITS FOR YESTERDAY............... 0  DEPARTURE...... -4 TOTAL HEATING UNITS FOR THE MONTH............... 3  DEPARTURE......-19 TOTAL HEATING UNITS FOR THE SEASON............5581  DEPARTURE.....-744 TOTAL HEATING UNITS LAST SEASON TO DATE.......5830  DEPARTURE.....-249 COOLING DEGREE DAYS (SEASON JAN THRU DEC) TOTAL COOLING UNITS FOR YESTERDAY...............15  DEPARTURE......+13 TOTAL COOLING UNITS FOR THE MONTH...............31  DEPARTURE......+20 TOTAL COOLING UNITS FOR THE SEASON..............60  DEPARTURE......+25 TOTAL COOLING UNITS LAST SEASON TO DATE.........59  DEPARTURE.......+1 PEAK WIND GUST (MPH):                      420C/Official..............30 WSW @  1:21 P.M.                      AEROVANE (south tower).....31 WSW @  1:17 P.M.                      ASOS.......................28 WSW @  1:17 P.M.                      DAVIS #1...................30 W   @  1:17 P.M.                      DAVIS #2 (south tower).....29 W   @  1:17 P.M.                      RMY........................32     @  1:19 P.M.                      VECTOR.....................31     @  1:20 P.M.                      MERLIN.....................28 FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL..................22 WSW @  1:21 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................22 W   @ 12:50 P.M. MAXIMUM 2-MINUTE DAVIS #1 AVERAGE...............24 W   @ 12:49 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE...............23 W   @  1:37 P.M. MAXIMUM 2-MINUTE RMY AVERAGE....................21 W   @  1:19 P.M. MAXIMUM 2-MINUTE VECTOR AVERAGE.................22     @ 12:47 P.M. AVERAGE WIND SPEED AND DIRECTION:                      CONTACTING/OFFICIAL......12.3 WSW [296 total miles]                      ASOS.....................12.5                      DAVIS #1.................12.8 W                      DAVIS #2.................12.6 WSW                      RMY......................11.9 WSW                      VECTOR...................12.2 PRECIPITATION (INCHES) THROUGH THIS MORNING (EST): TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.......0.00  DEPARTURE....-0.16                              ASOS.............0.00 TOTAL PRECIPITATION FOR THE MONTH.............0.03  DEPARTURE....-0.96                              ASOS.............0.03 TOTAL PRECIPITATION FOR THE YEAR.............20.69  DEPARTURE....-2.96                               ASOS...........20.89 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   62/38/50/-3/0.06/0.0/659/78       31 WNW  AERO 35 WNW  RMY 40 05/02   76/48/62/+9/0.01/0.0/220/26       41 SW   AERO 41 SW   RMY 46 05/03   67/48/58/+5/0.07/0.0/400/47       21 E    AERO 20 E    RMY 20 05/04   50/44/47/-7/0.78/0.0/000/00       36 NNE  AERO 32 NNE  RMY 37 05/05   48/44/46/-8/0.47/0.0/000/00       18 ESE  AERO 14 ESE  RMY 17 05/06   64/45/55/+1/0.00/0.0/780/91       33 NW   AERO 38 NNW  RMY 39 05/07   61/43/52/-3/0.00/0.0/516/60       28 ESE  AERO 22 ESE  RMY 26 05/08   54/40/47/-8/0.00/0.0/069/08       24 SSW  AERO 23 SSW  RMY 25 05/09   66/42/54/-1/T/0.0/579/67          30 SW   AERO 29 SW   RMY 34 05/10   60/45/53/-2/0.39/0.0/078/09       21 W    AERO 20 W    RMY 20 05/11   63/45/54/-2/0.00/0.0/764/88       38 WNW  AERO 41 WNW  RMY 41 05/12   65/41/53/-3/0.00/0.0/722/83       28 NW   AERO M  M    RMY 31 05/13   69/45/57/+1/0.00/0.0/759/87       22 WNW  AERO 21 WNW  RMY 21 05/14   76/49/63/+8/0.00/0.0/725/83       23 WNW  AERO 23 WNW  RMY 25 05/15   75/55/65/+8/0.01/0.0/569/65       24 SSE  AERO 26 SSE  RMY 26 05/16   78/54/66/+9/0.01/0.0/483/55       36 W    AERO 37 W    RMY 42 05/17   77/52/65/+8/0.00/0.0/722/82       20 SSW  AERO 21 SSW  RMY 21 05/18   81/54/68/+10/T/0.0/600/68         32 W    AERO 30 W    RMY 32 05/19   75/55/65/+7/0.00/0.0/778/88       25 NE   AERO 23 NNE  RMY 27 05/20   75/52/64/+6/0.00/0.0/842/95       18 ESE  AERO 18 ESE  RMY 19 05/21   78/50/64/+5/T/0.0/524/59          23 S    AERO 22 S    RMY 26 05/22   87/56/72/+13/T/0.0/285/32         25 WNW  AERO 21 WNW  RMY 24 05/23   87/58/73/+14/T/0.0/687/77         38 NNW  AERO 37 NNW  RMY 40 05/24   70/49/60/+1/0.00/0.0/839/94       30 S    AERO 35 S    RMY 33 05/25   75/47/61/+1/0.00/0.0/761/85       31 SW   AERO 35 SW   RMY 34 05/26   86/57/72/+12/0.21/0.0/736/82      30 S    AERO 36 S    RMY 35 TSTM 05/27   79/57/68/+8/0.02/0.0/691/77       25 N    AERO 25 WNW  RMY 27 05/28   58/43/51/-10/1.00/0.0/162/18      28 ENE  AERO 32 ENE  RMY 27 05/29   46/42/44/-17/1.50/0.0/000/00      44 ENE  AERO 47 ENE  RMY 50 05/30   46/45/46/-15/0.87/0.0/000/00      37 NE   AERO 40 NE   RMY 40 05/31   57/46/52/-9/0.20/0.0/027/03       22 NNE  AERO 25 WNW  RMY 25 RECORDS FOR THE MONTH: Low maximum on the 30th of 46F, beating the old record of 51F set in 1996 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/.../..            20 WSW  AERO 24 WSW  RMY 22 06/02   80/55/68/+6/0.00/.../..           28 S    AERO 25 S    RMY 28 06/03   73/56/65/+3/0.01/.../..           29 SSW  AERO 29 SSW  RMY 29 06/04   77/61/69/+6/0.02/.../..           23 SW   AERO 25 WSW  RMY 25 TSTM 06/05   87/60/74/+11/0.00/.../..          32 SSW  AERO 37 SSW  RMY 35 06/06   91/69/80/+17/0.00/.../..          30 WSW  AERO 31 WSW  RMY 32 06/07   The low since midnight is 69F, the daily normal low is 55F   DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR JUNE 7 HIGH 93F IN 1999 LOW 40F IN 1932 PRECIP 4.01 INS IN 2006 PEAK GUST 58 MPH NE IN 1982 RECORDS FOR JUNE 8 HIGH 94F IN 1984 LOW 37F IN 1932 PRECIP 1.11 INS IN 1923 PEAK GUST 86e MPH WNW IN 1946 [Record for month] TODAY'S REPORT PREPARED BY: Matt Douglas