BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY TUESDAY, NOVEMBER 24, 2015   ALL TIMES ARE IN EASTERN STANDARD TIME COLDEST NIGHT OF THE SEASON THUS FAR, 23F RECORDED THIS MORNING UNDER CLEAR SKIES Skies that cleared quickly yesterday morning remained clear overnight, allowing radiational cooling to take  place. A minimum temperature of 23F was reached between  5:00 and 6:00 AM EST this morning, before temperatures slowly made their way above freezing by mid morning. Yesterday's calendar maximum of 40F and minimum of 25F marks the coolest day for the month of November. Temperatures for the month now average 5.2 degrees F for November. By the 1:00 PM EST observation skies were mostly clear with only a few cumulus and altocumulus visible in the distance. A maximum temperature of 41F had been recorded.   Today's Observations: 7 A.M. Weather: Clear, few stratocumulus distant offshore E-SE, few altocumulus distant SW-W and N Temperature: 24F; Dew Point: 14F; Wind: W at 10 kts  Sea-level pressure: 30.29 ins. Hg, rising, then more quickly Visibility: 75 miles 6-hr Max temp: 24F  6-hr Min temp: 23F 24-hr precip: 0.00 ins.  BHO SA 1155 CLR 75 258/24/14/2810/029/ FEW SC DSNT OFFSHR E-SE  FEW AC DSNT SW-W AND N/ 8/530 53021 10024 20023 10 A.M. Weather: Clear, few altocumulus distant S-NW Temperature: 34F; Dew Point 19F; Wind: W at 9 kts, Sea-level pressure: 30.35 ins. Hg, rising, then more slowly Visibility: 70 miles  BHO SA 1455 CLR 70 277/34/19/2809/035/ FEW AC DSNT S-NW/ 8/030 51019       1 P.M.  Weather: Clear, few cumulus SE-N, few altocumulus distant S Temperature: 41F; Dew Point: 19F; Wind: WSW at 9 kts Sea-level pressure: 30.31 ins. Hg. steady, then falling Visibility: 70 miles  6-hr max. temp. 41F   6-hr min. temp. 24F   BHO SA 1755 CLR 70 265/41/19/2509/031/ FEW CU SE-N FEW AC DSNT S/ 8/130 58012 10041 20024 SUMMARY FOR MONDAY, NOVEMBER 23, 2015     TEMPERATURE (DEGREES F) MAX.....40   NORMAL.....47 MIN.....25   NORMAL.....31  MEAN....33   NORMAL.....39   DEPARTURE FROM 30-YEAR NORMAL......................-6 TOTAL DEPARTURE FOR THE MONTH....................+125  [+5.2 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............32   DEPARTURE..........+6 TOTAL HEATING UNITS FOR THE MONTH.............383   DEPARTURE........-125 TOTAL HEATING UNITS FOR THE SEASON............837   DEPARTURE........-234 TOTAL HEATING UNITS LAST SEASON TO DATE.......975   DIFFERENCE.......-138   PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...................24 NW  AT   2:40 P.M.*                     ASOS........................30 NW  AT   3:18 P.M.                              DAVIS.......................26 NW  AT  12:17 P.M. RMY 29 FASTEST MILE FOR YESTERDAY.....................21 NW  AT   2:33 P.M.    MAXIMUM 2-MINUTE ASOS AVERAGE..................23 NW  AT   2:40 P.M.            MAXIMUM 2-MINUTE DAVIS AVERAGE.................20 NW  AT   2:40 P.M.            AVERAGE WIND SPEED AND DIRECTION...............13.7 NNW                    ASOS........................13.2                          DAVIS.......................11.5 NNW [333 Deg.]  * Last of several occurrences  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...........2.40  DEPARTURE.....-1.23                          ASOS...............2.42 TOTAL PRECIPITATION FOR THE YEAR...........39.23  DEPARTURE.....-8.17                            ASOS................N/A *** *** ASOS annual total not available due to erroneous readings PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 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 11/1  59/45/52/+6/T/006/01                  30 SSW RMY 31   11/2  62/47/55/+9/0.00/476/77               24 W   RMY N/A 11/3  71/44/58/+12/0.00/616/100             25 W   RMY 25 11/4  66/49/58/+13/0.00/601/98              22 SSW RMY N/A 11/5  72/51/62/+17/0.00/281/46              31 SW  RMY 36   11/6  71/60/66/+21/0.00/109/18              35 SSW RMY 38 11/7  64/46/55/+10/0.00/029/04              33 WNW RMY 35 11/8  54/39/47/+3/0.00/591/98               26 NW  RMY 30 11/9  59/38/49/+5/0.00/577/96               20 W   RMY 21 11/10 53/45/49/+5/..../000/00               28 NE  RMY N/A 11/11 48/43/46/+3/..../000/00               41 NE  RMY N/A  11/12 55/42/49/+6/..../000/00               28 S   RMY 30 11/13 57/41/49/+6/..../385/65               40 WSW RMY 47 11/14 45/31/38/-4/0.00/425/72               40 NW  RMY 47   11/15 51/31/41/-1/0.00/.../..               25 W   RMY 27 11/16 59/36/48/+6/0.00/.../..               25 NNW RMY 29 11/17 45/28/37/-4/0.00/.../..               18 NNE RMY N/A 11/18 50/35/43/+2/0.00/.../..               17 SSE RMY N/A 11/19 55/38/47/+6/..../.../..               29 SSE RMY N/A 11/20 58/41/50/+10/..../.../..              43 SSE RMY N/A 11/21 46/35/41/+1/0.00/.../..               20 ENE RMY 21 11/22 45/35/40/+0/..../000/00               26 NW  RMY 28 11/23 40/25/33/-6/0.00/.../..               24 NW  RMY 29 11/24 low since midnight is 23F; normal low is now 31F   DAILY RECORDS FOR NOVEMBER 2015 **11/6 DAILY RECORD MAXIMUM TEMPERATURE OF 71F        TIES PREVIOUS RECORD OF 71F SET IN 1959   **11/6 DAILY RECORD HIGH MINIMUM TEMPERATURE OF 60F        BREAKS PREVIOUS RECORD OF 58F SET IN 1938 **11/6 DAILY RECORD HIGH MINIMUM TEMPERATURE OF 60F        TIES PREVIOUS MONTHLY RECORD OF 60F SET ON         11/8/1996 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):  RECORDS FOR NOVEMBER 24 HIGH 69 IN 1931 LOW 7 IN 1897 PRECIP 1.76 INCHES IN 1901 SNOWFALL 4.5 INS IN 1936 PEAK GUST 69 SSW IN 1959 RECORDS FOR NOVEMBER 25 HIGH 71 IN 1979 LOW 13 IN 1938 PRECIP 3.10 INCHES IN 1983 SNOWFALL 8.0 INS IN 1888 PEAK GUST 94e E IN 1950 TODAY'S REPORT PREPARED BY: Brian Fitzgerald