149
CXUS51 KBOX 010557
CLMBOS

CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1257 AM EST WED JAN 01 2025

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

...THE BOSTON MA CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2024...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2024

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             76   12/07/1998
 LOW             -17   12/29/1933
HIGHEST           62   12/11                          64
LOWEST            10   12/23                          21
AVG. MAXIMUM    41.8               42.2    -0.4
AVG. MINIMUM    28.8               29.2    -0.4
MEAN            35.3               35.7    -0.4
DAYS MAX >= 90     0                0.0     0.0
DAYS MAX <= 32     3                4.2    -1.2
DAYS MIN <= 32    22               19.8     2.2
DAYS MIN <= 0      0                0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        9.74   1969
 MINIMUM        0.66   1935
TOTALS          5.65               4.30    1.35
DAILY AVG.      0.18               0.14    0.04
DAYS >= .01       14               11.9     2.1
DAYS >= .10        9                7.2     1.8
DAYS >= .50        4                3.1     0.9
DAYS >= 1.00       1                1.0     0.0
GREATEST
 24 HR. TOTAL   2.78   12/11 TO 12/12

SNOWFALL (INCHES)
RECORDS
 TOTAL          27.9   1970
TOTALS           5.7                9.0    -3.3
 LIQUID EQUIV   0.60
SINCE 7/1        5.7                9.9    -4.2
DAYS >= TRACE      4                4.2    -0.2
DAYS >= 1.0        1                1.9    -0.9
GREATEST
 24 HR TOTAL      MM

DEGREE DAYS
HEATING TOTAL    911                908       3
 SINCE 7/1      1694               1923    -229
COOLING TOTAL      0                  0       0
 SINCE 1/1       891                800      91
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              10.4
RESULTANT WIND SPEED/DIRECTION   5/270
HIGHEST WIND SPEED/DIRECTION    37/180    DATE  12/11
HIGHEST GUST SPEED/DIRECTION    50/190    DATE  12/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.59
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             18
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       6
LIGHT RAIN               14     FREEZING RAIN              1
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                4     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      2
HAZE                      1

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

$$