BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, JULY 9, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME
 
TEMPERATURES AVERAGED 10 DEGREES COOLER THAN NORMAL FRIDAY
WITH OVERCAST WEATHER WHILE NE-ENE WINDS AVERAGED 12 MPH
ANOTHER OVERCAST VERY COOL EARLY JULY DAY TODAY 
SOME MOSTLY VERY LIGHT DRIZZLE LEAVES ONLY TRACEAT 1 P.M...
MAX TEMP. 63 DEGREES JUST ABOVE RECORD LOW MAX 62 IN 1917
 
The weather was so unseasonably cool yesterday that the day
averaged ten degrees cooler than normal with a high of only 67F
and a low of 58F by late last evening.
Summer continues to take a backseat at the summit today. The
thermometer was down to 57 degrees early this morning and
only struggling into the low 60's at mid-morning as winds have
retained an easterly component since the backdoor cold frontal
passage early Thursday.  
Dense early morning fog was observed along with some light
drizzle for a second consecutive morning today.
 
Today's Observations:
 
7 A.M.
Weather: Sky obscured by dense fog, light drizzle,
light drizzle very light
Temperature: 58F; Dew Point: 58F; Wind: ENE at 6 kts,
Wind: Light
Sea-level pressure: 29.93 ins. Hg, rising steadily
Visibility: 1/8 mile
6-hr Max temp: 58F
6-hr Min temp: 57F
24-hr precip:  trace
BHO SA 1155 W2 X 1/8L-F 134/58/58/0606/993/ PCPN VRY LGT WND LGT/
8//// 52008 MANUAL 6000/ 10058 20057
 
10 A.M.
Weather: Overcast stratus,bright spots in overcast
Temperature: 61F; Dew Point: 59F; Wind: E at 6 kts
Sea-level pressure: 29.92 ins. Hg, falling slightly
Visibility: 25 miles, light distant fog
3-hr precip: trace
BHO SA 1455 E8 OVC 25 132/61/59/0806/992/ BRGHT SPTS IOVC LGT DSNT FG
WND LGT/ 8/6// 58002 6000/ 
 
1 P.M.
Weather: Overcast stratus, light drizzle, very light intermittent 
Temperature: 61F; Dew Point: 58F; Wind: E at 9 kts
Sea-level pressure: 29.93 ins. Hg, 
Visibility: 10 miles, except 8 miles NW, 12 miles NE-E, light drizzle
and thin fog
6-hr Max temp: 63F
6-hr Min temp: 58F
6-hr precip: Trace
BHO SA 1755 E9 OVC 10L- 134/61/58/0909/993/ VSBY NW 8 NE-E 12 VSBY LWRG
INTMT L- THN FG/ 8/6// 50002 MANUAL 6000/ 10063 20058
 

SUMMARY FOR FRIDAY, JULY 8, 2016
 
TEMPERATURE (DEGREES F)
MAX.....67   NORMAL.....80
MIN.....58   NORMAL.....63
MEAN....63   NORMAL.....72
 
DEPARTURE FROM 30-YEAR NORMAL.........................-9
TOTAL DEPARTURE FOR THE MONTH.........................+7 [+0.7 DEGREES/DAY]
 
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY...............0   DEPARTURE..........-7
TOTAL COOLING UNITS FOR THE MONTH..............56   DEPARTURE..........+5
TOTAL COOLING UNITS FOR THE SEASON............213   DEPARTURE.........+33
TOTAL COOLING UNITS LAST SEASON TO DATE.......194   DIFFERENCE........+19  
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...................25 NE   AT  10:30 A.M.
                    ASOS.......................26 NE   AT  10:30 A.M.     
                   DAVIS.......................23 NE   AT  10:32 A.M. RMY 26
FASTEST MILE FOR YESTERDAY.....................16 ENE  AT   2:40 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE..................17 ENE  AT   5:35 P.M.      
MAXIMUM 2-MINUTE DAVIS AVERAGE.................15 ENE  AT   2:40 P.M.     
AVERAGE WIND SPEED AND DIRECTION.............12.0 ENE
                   ASOS......................11.6
                   DAVIS.....................10.4 NE [050 Deg.]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....trace DEPARTURE......-0.12
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.51  DEPARTURE......-0.37
                         ASOS..............0.48
TOTAL PRECIPITATION FOR THE YEAR..........22.20  DEPARTURE......-5.65
                         ASOS.............22.60

 
PRELIMINARY CLIMATE SUMMARY FOR JULY 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
                                    
7/1  84/67/76/+6/0.20/520/57                 32 S   AERO 35 S   RMY 34 TSTM
7/2  76/61/69/-1/0.00/811/91                 31 W   AERO 34 W   RMY 32
7/3  83/57/70/-1/0.00/766/84                 23 W   AERO 23 W   RMY 23
7/4  87/61/74/+3/0.00/847/93                 28 SSW AERO 28 SSW RMY 28
7/5  80/65/73/+2/0.29/309/34                 16 S   AERO 16 S   RMY N/A
7/6  92/68/80/+9/0.00/864/95                 22 WSW AERO 24 WSW RMY 22
7/7  77/61/69/-2/..../.../..                 21 NE  AERO 20 ENE RMY N/A
7/8  67/58/63/-9/0.02/.../..                 25 NE  AERO 25 NE  RMY 26
 
7/9  low temp since midnight is 57F; normal low now 63F
 
DAILY RECORDS FOR JULY 2016
None so far.
    
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JULY 9
HIGH 98F IN 1912
LOW 47F IN 1909
PRECIP 3.74 INS IN 1921
WIND 46 MPH NW IN 1992
 
RECORDS FOR JULY 10
HIGH 99F IN 1911
LOW 46F IN 1890
PRECIP 1.95 INS IN 2015
WIND 75 MPH W IN 1985
 
TODAY'S REPORT PREPARED BY: Robert Skilling