BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JANUARY 29, 2017 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Temperatures continue to be above normal for this time of year despite the cloudy conditions. 
Winds have lessened considerably from yesterday despite being occasionally gusty this afternoon.
The barometric pressure has remained low throughout the day.   Dry conditions prevailed as
temperatures rose during the late morning and afternoon with the humidity dropping into the
upper 30s. At the 1 o’clock observation, the temperature had climbed to 39 degrees. 
 
 
BHO Warmest January Corrected Mean Temperatures, deg F (1885-2017)
 
1) 35.6 in 1913
2) 35.0 in 1932
3) 34.6 in 1937
4) 33.9 in 2006
5) 33.8 in 1933
   33.8 in 1950
   33.8 in 1990
8) 33.5 in 2002
9) 33.3 in 2017 (through 1/28)
10)32.1 in 1967
   32.1 in 1995  
 
Today's Observations:
 
7 A.M.
Weather: Broken Stratocumulus
Temperature: 30F; Dew Point: 19F; Wind: SSW at 10 kts
Sea-level pressure: 29.66 ins. Hg, decreasing then increasing
Visibility: 40 miles, except 50 miles WNW-N
6-hr Max temp: 32F
6-hr Min temp: 29F
BHO SA 1155 E65 BKN 40 043/30/19/2110/966/ VSBY 50 WNW-N/
8/5// 55002 10032 20029
 
10 A.M.
Weather: Few Cumulus, Broken Altostratus
Temperature: 36F; Dew Point: 20F; Wind: WSW at 10 kts,
Sea-level pressure: 29.67 ins. Hg, steady then rising
Visibility: 50 miles
BHO SA 1455 E85 BKN 50 049/36/22/2410/967/ FEW CU ESE-SE/ 8/13/
53006
 
1 P.M.
Weather: Few Cumulus, Overcast Altostratus
Temperature: 39F; Dew Point: 16F; Wind: WSW at 13G19 kts,
Sea-level pressure: 29.33 ins. Hg, falling, then more quickly
Visibility: 50 miles
6-hr Max temp: 39F
6-hr Min temp: 30F
BHO SA 1755 E85 OVC 50 033/39/16/2413G19/963/ FEW CU/ 8/13/
58016 10039 20030
 
SUMMARY FOR SATURDAY, JANUARY 28, 2017

TEMPERATURE (DEGREES F)
MAX.....39   NORMAL.....34
MIN.....28   NORMAL.....17
MEAN....34   NORMAL.....25
 
DEPARTURE FROM 30-YEAR NORMAL.......................+9
TOTAL DEPARTURE FOR THE MONTH......................+226 [+7.9 DEGREES/DAY]
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............31   DEPARTURE..........-9
TOTAL HEATING UNITS FOR THE MONTH.............883   DEPARTURE........-225
TOTAL HEATING UNITS FOR THE SEASON...........2915   DEPARTURE........-497
TOTAL HEATING UNITS LAST SEASON TO DATE......2663   DIFFERENCE.......+252
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...................36 W   AT  1:47 P.M.
                   ASOS........................38 WNW AT  1:47 P.M.
                   DAVIS.......................36 NW  AT  1:47 P.M. RMY 43
FASTEST MILE FOR YESTERDAY.....................28 W   AT 11:36 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE..................29 W   AT 11:36 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE.................28 NW  AT 11:36 A.M.
AVERAGE WIND SPEED AND DIRECTION.............15.0 W
                   ASOS......................14.4
                   DAVIS.....................13.7 WNW [287 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..........5.39  DEPARTURE......+1.45
                         ASOS..............5.76
TOTAL PRECIPITATION FOR THE YEAR...........5.39  DEPARTURE......+1.45
                         ASOS..............5.76
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.5
TOTAL SNOWFALL FOR THE MONTH...............11.5  DEPARTURE.......-4.0
TOTAL SNOWFALL FOR THE SEASON..............19.3  DEPARTURE......-12.3
 
 
PRELIMINARY CLIMATE SUMMARY FOR JANUARY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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
 
1/1   41/29/35/+8/0.09/0.0/533/97           35 W   AERO 36 W   RMY 34
1/2   38/29/34/+7/0.00/0.0/011/02           21 E   AERO 20 E   RMY N/A 
1/3   42/37/40/+14/1.14/0.0/000/00          39 ENE AERO 41 ENE RMY 34
1/4   44/30/37/+11/0.11/T/000/00            41 WNW AERO 46 WNW RMY 45
1/5   30/23/27/+1/0.00/0.0/343/62           37 W   AERO 39 W   RMY 38
1/6   30/20/25/-1/0.05/1.7/072/13           20 W   AERO 20 W   RMY N/A
1/7   22/14/18/-8/0.74/9.5/000/00           32 NNW AERO 39 NNW RMY 38
1/8   20/06/13/-13/0.01/T/512/92            26 NNW AERO 29 NNW RMY N/A
1/9   17/04/11/-15/0.00/0.0/335/60          23 SSW AERO 23 SSW RMY 25
1/10  41/14/28/+3/0.18/0.0/369/66           35 SE  AERO 37 SE  RMY N/A
1/11  53/40/47/+22/0.13/0.0/358/64          51 SSW AERO 48 SSW RMY 57
1/12  59/42/51/+26/0.15/0.0/118/21          37 SSW AERO 40 S   RMY 40
1/13  55/23/39/+14/0.00/0.0/535/95          39 WNW AERO 43 WNW RMY 42
1/14  30/14/22/-3/0.00/0.0/345/61           20 SSW AERO 20 SSW RMY 22
1/15  35/23/29/+4/0.00/0.0/555/98           28 NW  AERO 28 NW  RMY 28
1/16  40/22/31/+6/0.00/0.0/540/95           28 SW  AERO 25 SW  RMY 27
1/17  40/29/35/+10/0.27/T/257/45            23 E   AERO 23 E   RMY 25
1/18  38/31/30/+10/0.29/T/.../..            30 ENE AERO 29 ENE RMY 26
1/19  44/30/37/+12/T/T/.../..               21 NNW AERO 20 NNW RMY 20
1/20  40/30/35/+10/T/0.0/.../..             17 NNW AERO 17 NNW RMY N/A
1/21  54/35/45/+20/T/0.0/.../..             29 W   AERO 29 W   RMY 28
1/22  46/36/41/+16/0.14/T/.../..            31 ENE AERO 30 ENE RMY N/A
1/23  36/33/35/+10/0.48/0.3/.../..          56 NE  AERO 58 NE  RMY N/A
1/24  40/32/36/+11/1.48/0.0/.../..          62 NE  AERO 60 NE  RMY 60
1/25  42/32/37/+12/0.03/0.0/.../..          41 WNW AERO 40 WNW RMY 38
1/26  48/36/42/+17/0.10/0.0/.../..          40 W   AERO 44 W   RMY 41
1/27  42/33/38/+13/T/T/.../..               46 W   AERO 46 W   RMY 50
1/28  38/29/34/+9/0.00/0.0/.../..           36 W   AERO 40 W   RMY 43
 
1/29 Low temp since midnight is 29F; normal low is now 17F
 
DAILY RECORDS FOR JANUARY 2017
 
1/12/17: NEW DAILY RECORD HIGH MAXIMUM TEMP. OF 59F,
         PREVIOUS RECORD WAS 57F SET 1913 AND TIED IN 1975
1/12/17: NEW DAILY RECORD HIGH MINIMUM TEMP. OF 42F,
         PREVIOUS RECORD WAS 40F SET 2006
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JANUARY 29
HIGH 66F IN 2002
LOW -11F IN 1888
PRECIP 1.48 INS. IN 1973
SNOWFALL 8.0 INS. IN 1943
PEAK GUST 72 MPH NW IN 1973
 
RECORDS FOR JANUARY 30
HIGH 60F IN 1914
LOW -8F IN 1948
PRECIP 1.12 INS. IN 1925
SNOWFALL 6.5 INS. IN 1986
PEAK GUST 76 MPH WNW IN 1962
 
TODAY'S REPORT PREPARED BY: Robert Millette