186
CXUS51 KBOX 030106
CLMBOS

CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
906 PM EDT TUE JUN 02 2026

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

...THE BOSTON MA CLIMATE SUMMARY FOR THE MONTH OF MAY 2026...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1872 TO 2026

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH             97   05/26/1880
 LOW              31   05/03/1882
HIGHEST           96   05/19                          84
LOWEST            42   05/09                          44
AVG. MAXIMUM    69.5               66.5     3.0
AVG. MINIMUM    52.2               50.3     1.9
MEAN            60.8               58.4     2.4
DAYS MAX >= 90     3                0.6     2.4
DAYS MAX <= 32     0                0.0     0.0
DAYS MIN <= 32     0                0.0     0.0
DAYS MIN <= 0      0                0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       13.38   1954
 MINIMUM        0.25   1944
TOTALS          2.09               3.25   -1.16
DAILY AVG.      0.07               0.10   -0.03
DAYS >= .01       13               11.8     1.2
DAYS >= .10        8                6.8     1.2
DAYS >= .50        0                2.0    -2.0
DAYS >= 1.00       0                0.5    -0.5
GREATEST
 24 HR. TOTAL   0.43   05/24 TO 05/25

SNOWFALL (INCHES)
RECORDS
 TOTAL           0.9   1938
TOTALS           0.0                0.0     0.0
 LIQUID EQUIV   0.00
SINCE 7/1       62.8               49.2    13.6
DAYS >= TRACE      0                0.0     0.0
DAYS >= 1.0        0                0.0     0.0
GREATEST
 24 HR TOTAL      MM

DEGREE DAYS
HEATING TOTAL    178                234     -56
 SINCE 7/1      5520               5494      26
COOLING TOTAL     58                 29      29
 SINCE 1/1        61                 33      28
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              10.9
RESULTANT WIND SPEED/DIRECTION   3/250
HIGHEST WIND SPEED/DIRECTION    44/020    DATE  05/30
HIGHEST GUST SPEED/DIRECTION    56/020    DATE  05/30

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.66
NUMBER OF DAYS FAIR            2
NUMBER OF DAYS PC             16
NUMBER OF DAYS CLOUDY         13

AVERAGE RH (PERCENT)     62

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       7
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      1
HAZE                      2

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

$$