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000
CXUS51 KBOX 080557
CLSBOS

CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1251 AM EST TUE DEC 08 2020

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

...THE BOSTON MA CLIMATE SUMMARY FOR THE SEASON, FROM
9/1/2020 TO 11/30/2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2020

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH            102   09/07/1881
 LOW              -2   11/30/1875
HIGHEST           85   09/04                          92
LOWEST            22   11/19                          21
AVG. MAXIMUM    64.1               61.8     2.3
AVG. MINIMUM    48.0               47.3     0.7
MEAN            56.1               54.5     1.6
DAYS MAX >= 90     0                0.5    -0.5
DAYS MAX <= 32     0                0.3    -0.3
DAYS MIN <= 32     7                5.7     1.3
DAYS MIN <= 0      0                0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       19.17   1878
 MINIMUM        3.36   1946
TOTALS         10.15              11.37   -1.22
DAILY AVG.      0.11               0.12   -0.01
DAYS >= .01       24               28.6    -4.6
DAYS >= .10       15               18.1    -3.1
DAYS >= .50        7                7.7    -0.7
DAYS >= 1.00       3                2.9     0.1
GREATEST
 24 HR. TOTAL   1.81   11/23 TO 11/23

SNOWFALL (INCHES)
RECORDS
 TOTAL          17.8   1898
TOTALS           4.3                1.3     3.0
 LIQUID EQUIV   0.40
SINCE 7/1        4.3                1.3     3.0
DAYS >= TRACE      3                0.9     2.1
DAYS >= 1.0        1                0.4     0.6
GREATEST
 24 HR TOTAL     4.3   10/30 TO 10/30

DEGREE DAYS
HEATING TOTAL    885               1041    -156
 SINCE 7/1       887               1057    -170
COOLING TOTAL     97                 88       9
 SINCE 1/1       924                747     177

FREEZE DATES
RECORD
 EARLIEST     10/05/1881
 LATEST       05/03/1882
EARLIEST                        10/30
LATEST                          04/18
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              10.2
RESULTANT WIND SPEED/DIRECTION   3/250
HIGHEST WIND SPEED/DIRECTION    44/160    DATE  09/30
HIGHEST GUST SPEED/DIRECTION    65/270    DATE  10/07

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.59
NUMBER OF DAYS FAIR           24
NUMBER OF DAYS PC             38
NUMBER OF DAYS CLOUDY         29

AVERAGE RH (PERCENT)     69

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN               12     RAIN                      14
LIGHT RAIN               33     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                3     SLEET                      0
FOG                      35     FOG W/VIS <= 1/4 MILE      6
HAZE                      5

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

$$