Climatological Report (Monthly)
Issued by NWS Boston, MA

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CLMBOS

CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1122 AM EDT FRI JUN 1 2018

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

...THE BOSTON MA CLIMATE SUMMARY FOR THE MONTH OF MAY 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              97   05/26/1880
 LOW               31   05/03/1882
HIGHEST            90   05/03
LOWEST             44   05/01
AVG. MAXIMUM     71.7              66.0     5.7
AVG. MINIMUM     52.5              49.9     2.6
MEAN             62.1              57.9     4.2
DAYS MAX >= 90      1               0.2     0.8
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           1.90              3.49   -1.59
DAILY AVG.       0.06              0.11   -0.05
DAYS >= .01        10              12.0    -2.0
DAYS >= .10         4               6.9    -2.9
DAYS >= .50         1               2.1    -1.1
DAYS >= 1.00        1               0.6     0.4
GREATEST
 24 HR. TOTAL    1.00   05/15 TO 05/15

SNOWFALL (INCHES)
RECORDS
 TOTAL            0.9   1938
 SNOW DEPTH        MM   MM
TOTALS            0.0               0.0     0.0
SINCE 7/1        59.9              43.8    16.1
SNOWDEPTH AVG.     MM
DAYS >= 1.0         0               0.0     0.0
GREATEST
 SNOW DEPTH        MM
 24 HR TOTAL      0.0   05/31 TO 05/31

DEGREE_DAYS
HEATING TOTAL     153               245     -92
 SINCE 7/1       5341              5626    -285
COOLING TOTAL      73                27      46
 SINCE 1/1         73                30      43
.................................................

WIND (MPH)
AVERAGE WIND SPEED              10.0
RESULTANT WIND SPEED/DIRECTION   1/174
HIGHEST WIND SPEED/DIRECTION    33/270    DATE  05/05
HIGHEST GUST SPEED/DIRECTION    50/260    DATE  05/05

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY         14

AVERAGE RH (PERCENT)     70

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

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

$$

SIPPRELL



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