BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY WEDNESDAY, SEPTEMBER 4, 2019 ALL TIMES ARE IN EASTERN STANDARD TIME A CLOUDY START, MIX OF SUN AND CLOUDS WITH A WARM AND HUMID AFTERNOON.... After a cloudy start to the day, conditions improved by mid to late morning with partly sunny skies. Temperatures warmed up to the low 80s by early afternoon with humid conditions. Dew points have been ranging in the mid to upper 60s. It's also been rather breezy this afternoon with south-southwest winds gusting between 20-30mph. Visibility today has been lower than in recent days with maximum values of only 40 miles. The high so far today is 82F, which is 6 degrees above the daily normal maximum of 76F. The low since midnight is 61F, which is 2 degrees above the normal minimum of 59F.   PRELIMINARY STATS FOR AUGUST 2019 TEMPERATURE, Deg. F Avg. Max. 80.4 [+1.2] Avg. Min. 62.1 [+0.3] Mean      71.5 [+1.0] 24-hour corrected mean: 70.5 Max. for month: 92F on the 19th Min. for month: 51F on the 26th COOLING DEGREE DAYS Total cooling units:   211 [+22] Total for the season:  619 [+82] Total for last season: 753 PRECIPITATION, Inches Total: 1.83 [-2.21] Greatest in 24 hrs: N/A WIND, mph Avg. uncorrected wind speed: 9.1 mph Avg. corrected wind speed:   9.8 mph Prevailing wind direction: N/A Peak gust and direction: N/A   SUNSHINE: Campbell-Stokes card minutes: N/A Astronomical total minutes:   N/A Today's Observations: 7 A.M. Weather: Overcast stratus, breaks in overcast in all directions Temperature: 64F; Dew Point: 63F; Wind: S at 10G18 kts Sea-level pressure: 30.02 ins. Hg, falling then rising Visibility: 40 miles, 15 miles E-ESE due to a distant fog 6-hr Max temp: 64F 6-hr Min temp: 61F 24-hr Precip: 0.00 ins. BHO SA 1155 E10 OVC 40 165/64/63/1910G18/002/ BINOVC DSNT FG ALQDS VSBY 15 E-ESE/ 8/6// 50006 10064 20061 10 A.M. Weather: Broken cumulus Temperature: 74F; Dew Point: 66F; Wind: S at 10G17 kts   Sea-level pressure: 29.97 ins. Hg, falling then rising Visibility: 35 miles, distant haze 3-hr Precip: 0.00 ins. BHO SA 1455 E20 BKN 35 148/74/66/1910G17/997/ DSNT HZ ALQDS/ 8/800 56017 1 P.M. Weather: Broken cumulus Temperature: 82F; Dew Point: 65F; Wind: SW at 12G23 kts Sea-level pressure: 29.88 ins. Hg, falling rapidly Visibility: 35 miles, distant haze 6-hr Max temp: 82F 6-hr Min temp: 64F BHO SA 1755 E40 BKN 35 120/82/65/2212G23/988/ DSNT HZ ALQDS/ 8/800 56028 10082 20064 SUMMARY FOR TUESDAY, SEPTEMBER 3, 2019 TEMPERATURE (DEGREES F) MAX.....77   NORMAL.....76 MIN.....61   NORMAL.....59 MEAN....69   NORMAL.....67 DEPARTURE FROM 30-YEAR NORMAL......................+2 TOTAL DEPARTURE FOR THE MONTH......................-3 [-1.2 DEGREES/DAY] COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY...............4   DEPARTURE..........0 TOTAL COOLING UNITS FOR THE MONTH...............5   DEPARTURE.........-6 TOTAL COOLING UNITS FOR THE SEASON............624   DEPARTURE........+76 TOTAL COOLING UNITS LAST SEASON TO DATE.......777   DEPARTURE.......-153 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................18 S   AT 10:59 P.M.                    AERO.........................16 S   AT 10:59 P.M.                    ASOS.........................19 S   AT 11:01 P.M.                    DAVIS........................19 S   AT 11:14 P.M. RMY N/A FASTEST MILE FOR YESTERDAY......................14 S   AT  9:44 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................14 S   AT 11:02 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................14 SE  AT  6:55 P.M. AVERAGE WIND SPEED AND DIRECTION...............7.5 S                    ASOS........................8.5                    DAVIS.......................8.1 ESE [106 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE......-0.12                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........0.37  DEPARTURE......+0.03                          ASOS..............0.36 TOTAL PRECIPITATION FOR THE YEAR..........37.52  DEPARTURE......+2.15                          ASOS.............37.40 PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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 8/01  84/66/75/+3/0.00/755/87               18 NNW AERO 20 NW  RMY 17 8/02  83/61/72/0/0.00/804/93                18 WSW AERO 18 WSW RMY 18 8/03  84/66/75/+3/0.00/302/35               25 SW  AERO 26 SW  RMY 25 8/04  83/66/75/+3/0.00/732/85               21 NE  AERO 23 SW  RMY 25 8/05  81/58/70/-2/0.00/842/98               20 S   AERO 18 S   RMY 19 8/06  79/63/71/-1/0.00/282/33               15 S   AERO 14 S   RMY 17 8/07  82/66/74/+2/..../367/43               32 SSW AERO 35 SSW RMY 35 8/08  84/67/76/+4/..../588/69               30 SW  AERO 24 WNW RMY 29 8/09  82/63/73/+1/..../815/96               28 NW  AERO 25 NW  RMY 26 8/10  78/59/69/-2/..../720/85               32 NW  AERO 28 NW  RMY 28 8/11  78/55/67/-4/0.00/734/87               28 W   AERO 25 W   RMY 28 8/12  82/60/71/0/0.00/749/89                25 W   AERO 23 W   RMY 26 8/13  77/66/72/+1/0.02/059/07               25 W   AERO 24 WSW RMY 24 8/14  75/62/69/-2/..../452/54               24 ENE AERO 22 ENE RMY 22 8/15  77/59/68/-3/..../568/68               17 ESE AERO 15 SSE RMY 16 8/16  78/61/70/-1/..../732/88               20 E   AERO 17 ESE RMY 18 8/17  78/67/73/+2/..../099/12               14 SE  AERO 15 SE  RMY 15 8/18  88/70/79/+8/..../529/64               18 SSW AERO 18 SSW RMY 21 8/19  92/69/81/+11/..../.../..              25 WSW AERO 23 WSW RMY 25 8/20  87/66/77/+7/..../.../..               18 W   AERO 14 WSW RMY N/A 8/21  85/68/77/+7/0.12/.../..               33 SW  AERO 32 SW  RMY 33 8/22  88/68/78/+8/0.00/.../..               25 W   AERO 21 W   RMY 26 8/23  78/60/69/-1/0.04/.../..               23 N   AERO 18 N   RMY 24 8/24  72/55/64/-6/0.00/.../..               25 ENE AERO 21 ENE RMY 22 8/25  66/56/61/-8/0.00/.../..               31 ENE AERO 25 ENE RMY 29 8/26  71/51/61/-8/0.00/.../..               25 NE  AERO 21 NE  RMY 25 8/27  77/54/66/-3/0.00/.../..               18 SSW AERO 18 SSW RMY 17 8/28  78/59/69/0/..../.../..                21 SSE AERO 18 SSE RMY 20 8/29  83/63/73/+4/..../.../..               25 WNW AERO 21 WNW RMY 26 8/30  84/59/72/+4/..../.../..               30 SW  AERO 30 SW  RMY 28 8/31  79/61/70/+2/..../.../..               21 W   AERO 18 W   RMY 20 PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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 9/01  73/56/65/-3/0.00/.../..                21 ENE AERO 14 ENE RMY 18 9/02  75/57/66/-2/0.37/.../..                39 W   AERO 41 W   RMY 41 9/03  77/61/69/+2/0.00/.../..                18 S   AERO 16 S   RMY N/A 9/04 Low temp since midnight is 61F; normal low is 59F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR SEPTEMBER 4 HIGH 90F IN 1953, 1973 LOW 46F IN 1987 PRECIP 3.22 INCHES IN 1922 PEAK GUST 47 MPH SE IN 1966 RECORDS FOR SEPTEMBER 5 HIGH 90F IN 1971 LOW 45F IN 1906 PRECIP 1.37 INCHES IN 1907 PEAK GUST 46 MPH NW IN 1994 TODAY'S REPORT PREPARED BY: Benjamin Turner, Matt Douglas, Greg White