BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA   DAILY DISCUSSION AND CLIMATE SUMMARY TUESDAY, JULY, 7 2015 ALL TIMES ARE IN EASTERN STANDARD TIME HUMIDITY ON THE RISE, DEW POINTS HIT THE LOWER 70S Yesterday's maximum temperature of 85F cooled overnight to a low of 65F, with gradually rising humidity. Thin fog and haze have kept visibility reduced under 20 miles for a second consecutive day. By the 1:00 PM EST observation hazy conditions were still in place. A passing shower dropped 0.02 inches of new rain, as very isolated showers have moved  through the region. A dew point of 70F was still present at the observation, with a maximum temperature of 84F.    PRELIMINARY STATS FOR JUNE 2015 TEMPERATURE, Deg. F Avg. Max. 72.9 [-2.1] Avg. Min. 55.8 [-1.3] Mean      64.4 [-1.7] Corrected mean: 63.9 Max. for month: 86 on 6/12 Min. for month: 44 on 6/2 and 6/3 HEATING DEGREE DAYS Total heating units: 101 [+28] Total for the season: 6505 [+129] Total for last season: 6422 COOLING DEGREE DAYS Total cooling units: 89 [-16] Total for the season: 138 [+9] Total for last season: 109 PRECIPITATION, Inches Total: 4.90 [+0.59] Greatest in 24 hrs: N/A WIND, mph Avg. uncorrected wind speed: 10.4 Avg. corrected wind speed: 10.9 Prevailing wind direction: S @ 12% Peak gust and direction: 41 SSW on the 8th SUNSHINE: Astronomical total minutes:  12,941 out of 27,416 possible, or 47% Campbell-Stokes card minutes: 12,450 out of 26,376 possible, or 47%   Today's Observations:   7 A.M. Weather: Scattered stratus fractus, broken stratocumulus Temperature: 71F; Dew Point: 68F; Wind: SSE at 7 kts Sea-level pressure: 30.13 ins. Hg, rising, then falling but still higher Visibility: 10 miles, thin fog, hazy 6-hr Max temp: 71F 6-hr Min temp: 65F 24-hr precip: none BHO SA 1155 7 SCT E26 BKN 10 203/71/68/1507/013/ THN FG ALQDS HAZY/ 8/500 50001 10071 20065 10 A.M. Weather: Scattered moderate cumulus, broken stratocumulus, few stratus fractus in all directions, cumulus building  in all directions, showers distant NNE Temperature: 79F; Dew Point: 70F; Wind: S at 7 kts Sea-level pressure: 30.12 ins. Hg, falling, then more quickly Visibility: 15 miles, hazy BHO SA 1455 20 SCT E43 BKN 15 199/79/70/1707/012/ SHWRS DSNT NNE FEW STFRA ALQDS MDT CU ALQDS CU BLDG ALQDS HAZY/ 8/200 58004 1 P.M. Weather: Scattered cumulus, scattered stratocumulus, few moderate cumulus Temperature: 84F; Dew Point: 70F; Wind: S at 15 kts, Sea-level pressure: 30.05 ins. Hg, falling, then more quickly  Visibility: 25 miles, hazy, except 15 miles NNE-NE 6-hr Max temp: 84F 6-hr Min temp: 71F 3-hr precip: 0.02 inches BHO SA 1755 21 SCT 40 SCT 25 176/84/70/1915/005/ VSBY 15 MI NNE-NE MDT CU NE HAZY/ 8/200 58023 ASOS 60001 MANUAL 60002 10084 20071 SUMMARY FOR TUESDAY, JULY 7, 2015     TEMPERATURE (DEGREES F) MAX.....85   NORMAL.....80 MIN.....64   NORMAL.....62 MEAN....75   NORMAL.....71   DEPARTURE FROM 30-YEAR NORMAL........................+4 TOTAL DEPARTURE FOR THE MONTH........................-1 [-0.3 DEGREES/DAY]   COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY..............10   DEPARTURE..........+3 TOTAL COOLING UNITS FOR THE MONTH..............33   DEPARTURE..........-4 TOTAL COOLING UNITS FOR THE SEASON............171   DEPARTURE..........+5 TOTAL COOLING UNITS LAST SEASON TO DATE.......159   DIFFERENCE.........12   PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...................20 S   AT   7:58 P.M.                                    ASOS........................21 S   AT   7:57 P.M.                    DAVIS.......................19 S   AT   7:57 P.M.  RMY 21 FASTEST MILE FOR YESTERDAY.....................13 S   AT   8:06 P.M.*            MAXIMUM 2-MINUTE ASOS AVERAGE..................15 S   AT   7:45 P.M.                  MAXIMUM 2-MINUTE DAVIS AVERAGE.................14 S   AT   8:06 P.M.          AVERAGE WIND SPEED AND DIRECTION............. .7.8 WNW                    ASOS........................8.0                    DAVIS.......................6.7 SW [233 deg.] *ADDITIONAL FASTEST MILE TIME OF 7:46 P.M. EST PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.....0.00  DEPARTURE.....-0.11                          ASOS...............0.00 TOTAL PRECIPITATION FOR THE MONTH...........0.59  DEPARTURE.....-0.06                           ASOS...............0.60 TOTAL PRECIPITATION FOR THE YEAR.......... 24.86  DEPARTURE.....-2.63                          ASOS...............N/A *** *** ASOS annual totals not available due to erroneous readings   PRELIMINARY CLIMATE SUMMARY FOR JUNE CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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 6/1  48/46/47/-15/0.69/000/00              32 NE  RMY 34  6/2  47/44/46/-16/0.78/000/00              28 NNE RMY 28  6/3  59/44/52/-10/0.00/172/19              16 ESE RMY 16 6/4  63/46/55/-8/0.00/445/49               17 E   RMY 16 6/5  70/49/60/-3/T/500/55                  17 NNE RMY 17 6/6  65/52/59/-4/0.06/382/42               26 ENE RMY 27 6/7  73/49/61/-3/0.00/884/97               28 S   RMY 29 6/8  73/50/62/-2/T/310/34                  41 SSW RMY 48 6/9  76/61/69/+4/0.03/228/25               29 SSW RMY 32   6/10 82/57/70/+5/0.00/840/92               24 WSW RMY N/A   6/11 85/61/73/+8/0.00/594/65               29 SSW RMY 32 6/12 86/65/76/+11/0.00/522/57              26 S   RMY 29  6/13 83/67/75/+10/T/586/64                 24 N   RMY 27 6/14 75/61/68/+2/0.00/641/70               21 SSE RMY 21 6/15 61/52/57/-9/0.60/000/00               25 SE  RMY 26 6/16 73/56/65/-1/T/009/01                  18 NW  RMY N/A  6/17 70/57/64/-3/0.00/605/66               28 NE  RMY 28 6/18 76/54/65/-2/0.00/669/73               22 S   RMY 26 6/19 84/60/72/+5/T/642/70                  24 SSW RMY 22 6/20 75/56/66/-2/0.05/559/61               23 SSE RMY N/A 6/21 76/60/68/0/1.14/202/22                26 S   RMY 29 6/22 83/63/73/+5/0.00/770/84               20 WNW RMY 19 6/23 85/67/76/+8/0.01/284/31               36 S   RMY 38 6/24 82/62/72/+3/0.00/899/98               25 WNW RMY 27 6/25 80/60/70/+1/0.00/605/66               21 W   RMY N/A  6/26 72/58/65/-4/0.01/540/59               23 NNE RMY 21 6/27 73/56/65/-4/..../202/22               32 ESE RMY N/A  6/28 59/50/55/-15/..../000/00              39 ENE RMY 38 6/29 71/50/61/-9/..../110/12               17 SSW RMY 18 6/30 81/60/71/+1/T/741/81                  21 S   RMY N/A 7/1  80/63/72/+2/0.59/.../..               30 SSE RMY 33  TSTM 7/2  78/60/69/-1/0.00/.../..               23 WNW RMY N/A 7/3  79/58/69/-2/0.00/.../..               17 SSW RMY 17  7/4  74/61/68/-3/T/.../..                  16 S   RMY N/A 7/5  82/58/70/-1/0.00/.../..               20 WSW RMY 20   7/6  85/64/75/+4/0.00/.../..               20 S   RMY 21 7/7 low since midnight is 65F; normal low is now 62F   DAILY RECORDS FOR JUNE AND JULY 2015 6/1- NEW RECORD LOW MAXIMUM TEMPERATURE OF 48F surpasses previous record of 51F in 2004   DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):  RECORDS FOR JULY 7 HIGH 97F IN 1908,1993 LOW 48F IN 1902 PRECIP 2.11 INS IN 1966 PEAK GUST 55 MPH NW IN 1989 RECORDS FOR JULY 8 HIGH 95F IN 1981 LOW 50F IN 1919 PRECIP 1.74 INS IN 1916 PEAK GUST 46e SSW IN 1941 TODAY'S REPORT PREPARED BY: Brian Fitzgerald