Climatological Report (Monthly)
Issued by NWS

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000
CXUS56 KSEW 011038
CLMSEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
337 AM PDT SUN MAY 1 2016

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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF APRIL 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              89   04/18/2016
 LOW               29   04/05/1975
                        04/01/1953
                        04/07/1952
HIGHEST            89R  04/18        MM      MM       77  04/27
LOWEST             43   04/26        MM      MM       37  04/14
                                                          04/05
AVG. MAXIMUM     65.9              58.5     7.4     59.9
AVG. MINIMUM     47.5              42.2     5.3     42.8
MEAN             56.7              50.3     6.4     51.4
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         6.53   1991
 MINIMUM         0.33   1956
TOTALS           1.19              2.71   -1.52     2.03
DAILY AVG.       0.04              0.09   -0.05     0.07
DAYS >= .01         9              14.3    -5.3       13
DAYS >= .10         6               7.5    -1.5        7
DAYS >= .50         0               1.3    -1.3        1
DAYS >= 1.00        0               0.2    -0.2        0
GREATEST
 24 HR. TOTAL    0.39   04/24 TO 04/25

SNOWFALL (INCHES)
RECORDS
 TOTAL            2.3   1972
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1           T               6.8    -6.8      0.8
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0                                  0
GREATEST
 SNOW DEPTH         0   MM                             0
 24 HR TOTAL      0.0   04/30 TO 04/30               0.0

DEGREE_DAYS
HEATING TOTAL     255               440    -185      401
 SINCE 7/1       3576              4268    -692     3345
COOLING TOTAL      14                 0      14        0
 SINCE 1/1         14                 0      14        0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.2
HIGHEST WIND SPEED/DIRECTION    30/220    DATE  04/13
HIGHEST GUST SPEED/DIRECTION    39/230    DATE  04/13

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY         11

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN               10     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       8     FOG W/VIS <= 1/4 MILE      0
HAZE                      0

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

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