000
CXUS51 KBOX 180011
CLABOS

CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
712 PM EST SUN JAN 17 2021

...................................

...THE BOSTON MA CLIMATE SUMMARY FOR THE YEAR OF 2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2021

WEATHER         OBSERVED          NORMAL  DEPART
                VALUE   DATE(S)   VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH            104   07/04/1911
 LOW             -18   02/09/1934
HIGHEST           95   07/28
                       07/27
                       07/19
LOWEST            12   02/15
AVG. MAXIMUM    61.1               58.8     2.3
AVG. MINIMUM    45.9               44.1     1.8
MEAN            53.5               51.5     2.0
DAYS MAX >= 90    14               10.3     3.7
DAYS MAX <= 32     9               24.6   -15.6
DAYS MIN <= 32    71               91.9   -20.9
DAYS MIN <= 0      0                0.5    -0.5

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       65.53   1878
 MINIMUM       23.71   1965
TOTALS         36.54              43.77   -7.23
DAILY AVG.      0.10               0.12   -0.02
DAYS >= .01      117              126.0    -9.0
DAYS >= .10       70               76.2    -6.2
DAYS >= .50       28               28.4    -0.4
DAYS >= 1.00       8               10.1    -2.1
GREATEST
 24 HR. TOTAL   1.81   11/23 TO 11/23

SNOWFALL (INCHES)
RECORDS
 MAXIMUM       108.6   2015
 MINIMUM         6.4   1973
TOTALS          21.6               43.8   -22.2
SINCE 7/1       17.3               10.3     7.0
DAYS >= TRACE     30               22.4     7.6
DAYS >= 1.0        3               10.9    -7.9
GREATEST
 24 HR TOTAL    12.3   12/17 TO 12/17

DEGREE DAYS
HEATING TOTAL   5029               5681    -652
 SINCE 7/1      1781               1992    -211
COOLING TOTAL    924                747     177
 SINCE 1/1       924                747     177
................................................

WIND (MPH)
AVERAGE WIND SPEED              10.9
RESULTANT WIND SPEED/DIRECTION   3/260
HIGHEST WIND SPEED/DIRECTION    47/190    DATE  04/13
HIGHEST GUST SPEED/DIRECTION    65/270    DATE  10/07

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR           64
NUMBER OF DAYS PC            173
NUMBER OF DAYS CLOUDY        129

AVERAGE RH (PERCENT)     64

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             21     MIXED PRECIP               0
HEAVY RAIN               35     RAIN                      61
LIGHT RAIN              139     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       3
HEAVY SNOW                1     SNOW                       6
LIGHT SNOW               28     SLEET                      4
FOG                     123     FOG W/VIS <= 1/4 MILE     14
HAZE                     29

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

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