Climatological Report (Monthly)
Issued by NWS Boston, MA

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CXUS51 KBOX 021334
CLMBOS


CLIMATE REPORT
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
928 AM EDT THU MAY 2 2019

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

...THE BOSTON MA CLIMATE SUMMARY FOR THE MONTH OF APRIL 2019...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2019

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              94   04/18/1976
 LOW               11   04/05/1874
HIGHEST            77   04/19
LOWEST             30   04/02
AVG. MAXIMUM     59.5              55.6     3.9
AVG. MINIMUM     43.9              40.6     3.3
MEAN             51.7              48.1     3.6
DAYS MAX >= 90      0               0.1    -0.1
DAYS MAX <= 32      0               0.1    -0.1
DAYS MIN <= 32      1               2.1    -1.1
DAYS MIN <= 0       0               0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         9.57   2004
 MINIMUM         0.83   1999
TOTALS           6.52              3.74    2.78
DAILY AVG.       0.22              0.12    0.10
DAYS >= .01        21              11.2     9.8
DAYS >= .10        12               6.5     5.5
DAYS >= .50         4               2.2     1.8
DAYS >= 1.00        1               0.8     0.2
GREATEST
 24 HR. TOTAL    2.43   04/22 TO 04/23

SNOWFALL (INCHES)
RECORDS
 TOTAL           22.4   1997
 SNOW DEPTH        15   04/01/1997
TOTALS              T               1.9    -1.9
SINCE 7/1        27.4              43.8   -16.4
SNOWDEPTH AVG.     MM
DAYS >= 1.0         0               0.3    -0.3
GREATEST
 SNOW DEPTH        MM
 24 HR TOTAL        T   04/05 TO 04/05

DEGREE_DAYS
HEATING TOTAL     398               510    -112
 SINCE 7/1       5000              5381    -381
COOLING TOTAL       8                 3       5
 SINCE 1/1          8                 3       5
.................................................

WIND (MPH)
AVERAGE WIND SPEED              12.5
RESULTANT WIND SPEED/DIRECTION   4/262
HIGHEST WIND SPEED/DIRECTION    38/270    DATE  04/03
HIGHEST GUST SPEED/DIRECTION    56/280    DATE  04/03

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY         15

AVERAGE RH (PERCENT)     62

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                      13
LIGHT RAIN               22     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                1     SLEET                      0
FOG                      18     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.

$$

SIPPRELL



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