BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY TUESDAY, SEPTEMBER 29, 2015  ALL TIMES ARE IN EASTERN STANDARD TIME TEMPS BREAK 80F ON MONDAY, TEMPERATURES AVERAGING 4.6 DEGREES ABOVE NORMAL, HEADING INTO LAST TWO DAYS OF THE MONTH- HEAVY RAIN ON THE WAY   Abundant sunshine and a warm southerly flow yesterday allowed temperatures to reach a peak of 81F just after the 1:00 PM EST observation- some 14 degrees above  the daily normal maximum for that date. Overnight moisture continued to stream up from the S, with thick fog present at this morning's 7:00 AM EST observation.  Fog was dissipating by the 10:00 AM EST observation, and by 1:00 PM EST moderate cumulus and stratocumulus were dominating the sky, with partly sunny conditions. Showers were visible and distant in all directions. A maximum  temperature of 82F was reached by this time, which is just 3 degrees below today's daily record of 85F set in 1952.      Today's Observations: 7 A.M. Weather: Thick fog Temperature: 67F; Dew Point: 67F; Wind: S at 11 kts, Sea-level pressure: 30.14 ins. Hg, rising slightly Visibility: 1/4 of a mile, thick fog 6-hr Max temp: 67F   6-hr Min temp: 65F 24-hr precip: none BHO SA 1155 W2 X 1/4F 206/67/67/1911/014/ 8//// 53002 10067 20065 10 A.M. Weather: Scattered cumulus, broken stratocumulus, broken cirrus  Temperature: 73F; Dew Point 69F; Wind: S at 10G16 kts, Sea-level pressure: 30.12 ins. Hg, increasing, then decreasing and lower  Visibility: 10 miles, except 15 miles SE-SW, thin fog in all directions  BHO SA 1455 10 SCT E15 BKN 250 BKN 10 201/73/69/1810G16/012/  VSBY SE-SW 15 MI THN FG ALQDS/ 8/801 58005 1 P.M. Weather: Scattered moderate cumulus, broken stratocumulus, broken cirrocumulus Temperature: 79F; Dew Point: 66F; Wind: S at 14G19 kts Sea-level pressure: 30.07 ins. Hg, decreasing, then more slowly Visibility: 25 miles, hazy, showers distant in all directions 6-hr Max: 82F  6-hr Min: 67F BHO SA 1755 40 SCT E48 BKN 250 BKN 25 182/79/66/1814G19/007/  SHWRS DSNT ALQDS HAZY/ 8/809 56019 10082 20067 SUMMARY FOR MONDAY, SEPTEMBER 28, 2015     TEMPERATURE (DEGREES F) MAX.....81   NORMAL.....67  MIN.....57   NORMAL.....50  MEAN....69   NORMAL.....58    DEPARTURE FROM 30-YEAR NORMAL.......................+11 TOTAL DEPARTURE FOR THE MONTH......................+135  [+4.6 DEGREES/DAY]   COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY...............4   DEPARTURE..........+3 TOTAL COOLING UNITS FOR THE MONTH.............135   DEPARTURE.........+76 TOTAL COOLING UNITS FOR THE SEASON............801   DEPARTURE........+205 TOTAL COOLING UNITS LAST SEASON TO DATE.......587   DIFFERENCE.......+214 HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............0   DEPARTURE..........-7 TOTAL HEATING UNITS FOR THE MONTH..............41   DEPARTURE.........-60 TOTAL HEATING UNITS FOR THE SEASON.............42   DEPARTURE.........-84 TOTAL HEATING UNITS LAST SEASON TO DATE........91   DIFFERENCE........-49   PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...................22 SSW AT  4:30 P.M.*                      ASOS........................24 S   AT  4:04 P.M.                           DAVIS.......................22 SSW AT  4:03 P.M. RMY 24 FASTEST MILE FOR YESTERDAY.................... 17 SSW AT  4:29 P.M.        MAXIMUM 2-MINUTE ASOS AVERAGE..................17 S   AT  4:31 P.M.        MAXIMUM 2-MINUTE DAVIS AVERAGE.................16 SSW AT  4:30 P.M.        AVERAGE WIND SPEED AND DIRECTION............. .10.3 SSW                    ASOS........................10.5                       DAVIS........................9.4 SSW [202 DEG]  PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.....0.00  DEPARTURE.....-0.14                          ASOS...............0.00 TOTAL PRECIPITATION FOR THE MONTH...........1.35  DEPARTURE.....-2.41                          ASOS...............1.33 TOTAL PRECIPITATION FOR THE YEAR...........31.60  DEPARTURE.....-7.17                          ASOS................N/A *** *** ASOS annual total not available due to erroneous readings PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 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 9/1  81/65/73/+5/0.00/766/97               20 SSW RMY 20 9/2  89/64/77/+9/0.00/732/93               20 SW  RMY 21   9/3  85/66/76/+9/T/612/78                  17 E   RMY N/A TSTM  9/4  72/58/65/-2/0.00/297/38                31 ENE RMY N/A 9/5  77/55/66/-1/0.00/748/96               14 SW  RMY 18 9/6  87/57/72/+5/0.00/753/97               21 SSW RMY 22 9/7  92/63/78/+12/0.00/727/94              23 WSW RMY 24 9/8  97/70/84/+18/0.00/693/90              22 WSW RMY 24 9/9  92/70/81/+15/0.00/683/89              30 SSW RMY 33 9/10 73/62/68/+3/..../000/00               29 NE  RMY N/A 9/11 70/59/65/0/..../084/11                33 NE  RMY N/A 9/12 75/58/67/2/..../380/50                18 SSE RMY 25  9/13 66/60/63/-1/..../000/00               25 E   RMY N/A 9/14 70/53/62/-2/0.00/550/73               33 W   RMY 35 9/15 82/56/69/+5/0.00/736/98               23 W   RMY N/A 9/16 84/62/73/+10/0.00/711/95              17 NW  RMY N/A 9/17 87/64/76/+13/0.00/723/97              17 SW  RMY 16 9/18 86/64/75/+13/0.00/712/96              21 SSW RMY 21 9/19 80/62/71/+9/0.00/.../..               22 S   RMY N/A 9/20 74/55/65/+3/T/..../...                24 S   RMY N/A   9/21 65/50/58/-3/0.00/.../..               29 ENE RMY 30 9/22 67/55/61/+0/0.00/.../..               21 E   RMY 21 9/23 72/50/61/+1/0.00/.../..               15 E   RMY N/A 9/24 72/56/64/+4/0.00/.../..               22 E   RMY 21    9/25 66/53/60/0/0.00/.../..                21 E   RMY 20  9/26 63/49/56/-3/0.00/.../..               25 ENE RMY 25 9/27 71/46/59/+0/0.00/.../..               17 S   RMY 18 9/28 81/57/69/+11/0.00/.../..              22 SSW RMY 24 9/29 low since midnight is 65F; normal low is now 49F   DAILY RECORDS FOR SEPTEMBER 2015 **9/7 DAILY RECORD MAXIMUM TEMPERATURE OF 92F  TIES PREVIOUS RECORD SET IN 2007** **9/8 DAILY RECORD MAXIMUM TEMPERATURE OF 97F BREAKS PREVIOUS RECORD OF 93F SET IN 2007** **9/8 DAILY RECORD HIGH MINIMUM TEMPERATURE OF 70F BREAKS PREVIOUS RECORD OF 69F SET IN 1999** **9/9 DAILY RECORD MAXIMUM TEMPERATURE OF 92F BREAKS PREVIOUS RECORD OF 91F SET IN 2002** **9/9 DAILY RECORD HIGH MINIMUM TEMPERATURE OF 70F BREAKS PREVIOUS RECORD OF 69F SET IN 1999** **9/17 DAILY RECORD MAXIMUM TEMPERATURE OF 87F BREAKS PREVIOUS RECORD OF 86F SET IN 1915, 1941, AND 1991** **9/18 DAILY RECORD HIGH MINIMUM TEMPERATURE OF 64F TIES PREVIOUS RECORD SET IN 1992** DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):  RECORDS FOR SEPTEMBER 29 HIGH 85F IN 1952 LOW 28F IN 1914 (SEPTEMBER MINIMUM RECORD) PRECIP 2.61 INCHES IN 1907 PEAK GUST 62 MPH S IN 2005 RECORDS FOR SEPTEMBER 30 HIGH 84F IN 1986 LOW 31F IN 1992 PRECIP 1.93 INCHES IN 1946 PEAK GUST 58 MPH SSE IN 1999 TODAY'S REPORT PREPARED BY: Brian Fitzgerald