BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA   DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, JUNE 1, 2013 ALL TIMES ARE IN EASTERN STANDARD TIME   HIGH TEMPERATURE TIES RECORD FOR SECOND STRAIGHT DAY AT 90F... FULL SUNSHINE TODAY WITH ONLY A FEW CLOUDS...   The maximum temperature has reached 90F so far today, just after the 1 PM EST observation, and this ties the record for the date in 1937. This follows the record tying high temperature of 92F that occurred on Friday.  The minimum temperature this morning of 69F is also above the current record high minimum temperature for the date of 68F set in 1944 and 1987.  A strong breeze from the SW has also helped to keep the dew point in the uncomfortable range in the middle 60s all day.  There has been full sunshine so far today with only a few very small cumulus and high thin cirrus from time to time.     MAY 2013 PRELIMINARY STATISTICS: (departures relative to 1981-2010 average)   TEMPERATURE: Average Max Temp:  69.5F [+3.2F] Average Min Temp:  48.2F [+0.4F] Mean Temp:  58.9F [+1.8F] 24-hr. Corr. Mean Temp:  58.2F Max Temp:  92F on 31st Min Temp:  37F on 5th and 26th Total heating degree day units (month):    212 [ -56] *NCDC method Total heating degree day units (season): 5,734 [-569] *start July 1 (NCDC)   PRECIPITATION: Total precipitation:  3.71 inches [-0.40 inches] Greatest 24-hr precipitation:  N/A Total snowfall:  0.0 [-0.0 inches] Total seasonal snowfall:  99.0 inches [+36.3 inches]   WIND: Avg wind speed:  11.0 MPH Avg corrected wind speed:  11.3 MPH Prevailing wind direction: S [18%] Peak gust: 44 MPH NW on 26th Peak fastest mile: 33 MPH SSW on 11th   SUNSHINE: Astronomical minutes: N/A Campbell-Stokes card minutes: N/A       Today's observations:   7 A.M. Weather: Clear (no clouds), HAZY Temperature: 74F; Dew Point: 63F; Wind: WSW at 10 kts. Sea-level pressure: 29.99 ins. Hg, rising Visibility: 25 miles, hazy 6-hr min. temp: 69F BHO SA 1155 CLR 25 157/74/63/2410/999/ SKC HAZY/ 53003 10074 20069   10 A.M. Weather: Clear, few small cumulus distant S-SW, few cirrus distant WSW-N, hazy Temperature: 85F; Dew Point: 64F; Wind: SW at 13G22 kts, Sea-level pressure: 29.99 ins. Hg, falling lightly Visibility: 30 miles, hazy BHO SA 1455 CLR 30 156/85/64/2313G22/999/ FEW SML CU DSNT S-SW FEW CI DSNT WSW-N HAZY/ 8/101 58001   1 P.M. Weather: Thin scattered cirrus, few small cumulus and cumulus fractus distant WSW-W, few lower dense cirus WSW-NW, hazy Temperature: 89F; Dew Point: 64F; Wind: SW at 17G22 kts, Sea-level pressure: 29.94 ins. Hg, falling Visibility: 35 miles, hazy    6-hour max temp: 89F BHO SA 1755 250 –SCT 35 139/89/64/2217G22/994/ FEW SML CU/CUFRA DSNT WSW-W FEW LWR DNS CI WSW-NW HAZY/ 8/101 57017 10089 20074     WEATHER SUMMARY FOR FRIDAY, MAY 31, 2013   TEMPERATURE (DEGREES F) MAX.....92     NORMAL.....71 MIN.....68     NORMAL.....52 MEAN....80     NORMAL.....61   DEPARTURE FROM 30-YEAR NORMAL...................+19 TOTAL DEPARTURE FOR THE MONTH...................+63 [+1.8 DEGREES/DAY]   HEATING DEGREE DAYS  TOTAL HEATING UNITS FOR YESTERDAY.............0   DEPARTURE..........-5 TOTAL HEATING UNITS FOR THE MONTH...........212   DEPARTURE.........-56 TOTAL HEATING UNITS FOR THE SEASON.........5734   DEPARTURE........-569 TOTAL HEATING UNITS LAST SEASON TO DATE....4888   DIFFERENCE.......+846   PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...............26 SW AT  1:22 P.M.                    AERO....................25 SW AT  1:22 P.M.                    ASOS....................25 SW AT  1:22 P.M.                    DAVIS...................25 SW AT   1-2 P.M. RMY: 27 FASTEST MILE FOR YESTERDAY.................20 SW AT  1:21 P.M. * MAXIMUM 2-MINUTE ASOS AVERAGE..............20 SW AT  1:24 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE.............20 SW AT  1:24 P.M. AVERAGE WIND SPEED AND DIRECTION.........11.8 W                    ASOS..................11.0                    DAVIS.................10.3 WSW [245 deg] *last of several occurrences   PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE...........-0.15                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........3.71  DEPARTURE...........-0.40                          ASOS..............3.66 TOTAL PRECIPITATION FOR THE YEAR..........20.09  DEPARTURE...........-2.57                          ASOS..............N/A* *ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals                           PRELIMINARY CLIMATE SUMMARY FOR MAY 2013 CALENDAR DAY DATA DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST AERO: Aerovane wind recording system gust RMY:  RMY = R.M. Young wind gust recording system added 8/9/2011 TSTM: Thunderstorm day (thunder heard some time during day) ....: Data not yet available, records not finalized                               5/1  67/45/56/+3/0.00/845/100        18 E   AERO 16 MPH E   RMY 17 5/2  75/43/59/+6/T/669/79            29 NE  AERO 26 MPH NE  RMY 29 5/3  54/42/48/-5/0.00/706/83         24 NE  AERO 25 MPH NE  RMY 28 5/4  55/40/48/-6/0.00/843/99         21 NE  AERO 23 MPH NE  RMY 23 5/5  58/37/48/-6/0.00/752/88         17 ENE AERO 17 MPH ENE RMY 20 5/6  66/40/53/-1/0.00/600/70         17 S   AERO 18 MPH S   RMY 20 5/7  77/50/64/+9/0.00/807/94         21 S   AERO 23 MPH S   RMY 25 5/8  71/55/63/+8/0.42/112/13         31 SSE AERO 35 MPH SSE RMY 35 TSTM 5/9  66/56/61/+6/0.41/078/09         16 NE  AERO 16 MPH NE  RMY 18 TSTM 5/10 79/54/67/+12/T/333/63           18 S   AERO 21 MPH S   RMY N/A 5/11 70/56/63/+7/0.06/026/03         43 SSW AERO 44 MPH SSW RMY 46 5/12 71/47/59/+3/0.05/339/39         30 W   AERO 32 MPH W   RMY 32 5/13 60/41/51/-5/0.00/821/94         25 WSW AERO 28 MPH WSW RMY 30 5/14 58/38/48/-9/T/385/44            22 W   AERO 24 MPH W   RMY 25 5/15 65/41/53/-4/0.02/456/52         35 S   AERO 38 MPH S   RMY 40 5/16 80/51/66/+9/0.00/844/96         40 W   AERO 45 MPH W   RMY 42 5/17 69/50/60/+3/0.00/872/99         24 NW  AERO 28 MPH NW  RMY 27 5/18 73/47/60/+2/0.00/689/78         21 SE  AERO 24 MPH SE  RMY 24 5/19 71/50/61/+3/0.11/407/46         21 S   AERO 23 MPH S   RMY 24 5/20 81/54/68/+10/0.01/496/56        21 S   AERO 21 MPH S   RMY N/A 5/21 81/49/65/+6/0.14/506/57         29 NE  AERO 31 MPH NE  RMY 32 TSTM 5/22 66/48/57/-3/0.04/009/01         27 WNW AERO 25 MPH WNW RMY N/A 5/23 74/53/64/+5/0.09/036/04         35 S   AERO 39 MPH S   RMY 40 5/24 68/49/59/0/0.57/000/00          33 S   AERO 35 MPH S   RMY N/A 5/25 50/39/45/-15/0.59/000/00        32 NW  AERO 35 MPH NW  RMY 32 5/26 58/37/48/-12/0.03/332/37        44 NW  AERO 44 MPH NW  RMY 45 5/27 70/41/56/-4/0.00/880/98         33 WNW AERO 33 MPH WNW RMY 36 5/28 74/55/65/+4/0.00/639/71         20 S   AERO 20 MPH S   RMY 21 5/29 71/56/61/+3/1.17/045/05         25 W   AERO 27 MPH W   RMY 27 TSTM 5/30 86/63/75/+14/0.00/839/93        25 W   AERO 25 MPH W   RMY 27 5/31 92/68/80/+19/0.00/805/89        25 SW  AERO 25 MPH SW  RMY 27   6/1 morning low temp: 69F; the normal low is now 53F   DAILY RECORDS FOR MAY 2013 5/26 - TIED DAILY RECORD MINIMUM TEMPERATURE OF 37F;       previous record of 37F set in 1972.   5/31 - TIED DAILY RECORD MAXIMUM TEMPERATURE OF 92F;       previous record of 92F set in 1937.   DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR JUNE 1 HIGH 90F IN 1937 LOW 36F IN 1945 [Record for month] PRECIP 2.28 INS IN 1992 PEAK GUST 51e MPH SE IN 1952   RECORDS FOR JUNE 2 HIGH 91F IN 1895 LOW 41F IN 1907, 1929 PRECIP 2.36 INS IN 1982 SNOWFALL TRACE IN 1907 (IP) PEAK GUST 63 MPH NW IN 2000   TODAY'S REPORT PREPARED BY: Mike Iacono