BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY, JUNE 14, 2018   ALL TIMES ARE IN EASTERN STANDARD TIME DRY WEATHER WITH INCREASING CLOUDS TODAY AND WINDS REMAINING GUSTY Dry and comfortable weather has returned today after the more humid air of yesterday. After a mild start to the morning, with a low of 64F, we have risen to a high of 77F so far. Most of this rise came in the morning, and in fact we have dropped a few degrees this afternoon. This is due to an  increase in stratocumulus clouds, which had mostly blocked out the Sun shortly after noontime. Yesterday provided the first rain at Blue Hill since June 5,  but it was only a trace, as this lengthy dry spell continues. Winds have been  gusty for the third day in a row, with gusts close to 35mph today and sustained winds again around 15mph. The barometric pressure has been steady but low  today, with a low pressure system to our north slow to depart and contributing  to the increase in clouds this afternoon. Today's Observations: 7 A.M. Weather: Mostly clear, few stratocumulus distant S and W-NNE,  few altocumulus distant SE-S and NW-NE Temperature: 68F; Dew Point: 53F; Wind: W at 13G23 kts   Sea-level pressure: 29.66 ins. Hg, rising then more slowly Visibility: 75 miles 6-hr Max temp: 68F 6-hr Min temp: 64F 24-hr Precip: Trace BHO SA 1155 CLR 75 045/68/53/2713G23/966/ FEW SC DSNT S AND W-NNE  FEW AC DSNT SE-S AND NW-NE/ 8/530 51008 MANUAL 6000/ 10068 20064 10 A.M. Weather: Scattered stratocumulus, few altocumulus distant NW-NE Temperature: 75F; Dew Point: 52F; Wind: W at 13G22 kts, Peak Wind: 29 kts W at 9:39 A.M. Sea-level pressure: 29.67 ins. Hg, about steady Visibility: 65 miles 3-hr Precip: 0.00 ins. BHO SA 1455 55 SCT 65 047/75/52/2813G22/967/ FEW AC DSNT NW-NE  PK WND 2829/39/ 8/530 53002 1 P.M. Weather: Broken stratocumulus, few lower stratocumulus Temperature: 73F; Dew Point: 51F; Wind: WNW at 14G28 kts, Peak Wind: 28 kts W at 12:51 P.M. Sea-level pressure: 29.66 ins. Hg, about steady Visibility: 65 miles 6-hr Max temp: 77F 6-hr Min temp: 68F 6-hr precip: 0.00 ins. BHO SA 1755 E65 BKN 65 045/73/51/2914G28/966/ FEW LWR SC  PK WND 2828/51/ 8/5// 55002 10077 20068 SUMMARY FOR WEDNESDAY, JUNE 13, 2018 TEMPERATURE (DEGREES F) MAX.....74   NORMAL.....74 MIN.....56   NORMAL.....56 MEAN....65   NORMAL.....65 DEPARTURE FROM 30-YEAR NORMAL..........................0 TOTAL DEPARTURE FOR THE MONTH........................-28 [-2.3 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............0   DEPARTURE...........-3 TOTAL HEATING UNITS FOR THE MONTH.............58   DEPARTURE...........+9 TOTAL HEATING UNITS FOR THE SEASON..........5905   DEPARTURE.........-446 TOTAL HEATING UNITS LAST SEASON TO DATE.....5721   DIFFERENCE........+184 COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY...............0   DEPARTURE..........-3 TOTAL COOLING UNITS FOR THE MONTH..............12   DEPARTURE.........-18 TOTAL COOLING UNITS FOR THE SEASON.............74   DEPARTURE.........+20 TOTAL COOLING UNITS LAST SEASON TO DATE.......109   DEPARTURE.........-35 PEAK GUST AND AVERAGE WIND SPEED (MPH)  PEAK WIND GUST FOR YESTERDAY....................35  SW  AT  9:54 A.M.                    AERO.........................36  SW  AT  9:34 A.M.                     ASOS.........................36  SW  AT  9:56 A.M.                    DAVIS........................38  M   AT  9:55 A.M.** RMY 36 FASTEST MILE FOR YESTERDAY......................27  SW  AT  9:57 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................26  SW  AT 10:00 A.M.   MAXIMUM 2-MINUTE DAVIS AVERAGE..................27  M   AT  9:57 A.M.** AVERAGE WIND SPEED AND DIRECTION............. .15.0 SW                    ASOS........................15.3                    DAVIS.......................14.6 **Davis direction malfunctioning  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..........1.01  DEPARTURE......-1.12                          ASOS..............1.04   TOTAL PRECIPITATION FOR THE YEAR..........28.33  DEPARTURE......+3.72                          ASOS.............29.91 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 6/01 78/62/70/+8/T/.../..            21 S   AERO 21 S   RMY N/A 6/02 79/54/67/+5/T/.../..            26 ENE AERO 25 ENE RMY 27 6/03 59/45/52/-10/0.00/.../..        28 ENE AERO 25 ENE RMY N/A   6/04 52/45/49/-14/.../.../..         29 ENE AERO 26 ENE RMY 29 6/05 64/47/56/-7/..../.../..         24 N   AERO 21 N   RMY 23 TSTM   6/06 66/50/58/-5/0.00/.../..         23 S   AERO 21 S   RMY 22 6/07 69/50/60/-4/0.00/.../..         25 S   AERO 25 S   RMY 27  6/08 79/52/66/+2/0.00/.../..         20 SW  AERO 17 SW  RMY 18 6/09 79/58/69/+5/0.00/.../..         22 W   AERO 21 W   RMY 22 6/10 72/56/64/-1/0.00/.../..         20 S   AERO 18 S   RMY 17 6/11 68/51/60/-5/0.00/.../..         21 ENE AERO 20 SSW RMY N/A 6/12 77/49/63/-2/0.00/.../..         37 SW  AERO 37 SW  RMY 39 6/13 74/56/65/0/T/.../..             35 SW  AERO 36 SW  RMY 36 6/14 Low temp since midnight is 64F; normal low is now 57F DAILY RECORDS FOR JUNE 2018 None so far. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):     RECORDS FOR JUNE 14 HIGH 93F IN 1956 LOW 41F IN 1912 PRECIP 1.49 INS 1896 PEAK GUST 55 MPH WNW IN 1958 RECORDS FOR JUNE 15 HIGH 94F IN 1988 LOW 42F IN 1959, 1978 PRECIP 2.04 INS IN 1903 PEAK GUST 52 MPH SW IN 1972 TODAY'S REPORT PREPARED BY: Jonathan O'Brien