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000
CXUS56 KSEW 012005
CLMSEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE, WA
105 PM PDT SAT JUN 1 2013

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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MAY 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              93   05/21/1963
 LOW               28   05/01/1954
HIGHEST            87   05/06        MM      MM       80  05/14
LOWEST             38   05/01        MM      MM       39  05/10
AVG. MAXIMUM     67.3              64.7     2.6     63.8
AVG. MINIMUM     49.9              47.3     2.6     46.7
MEAN             58.6              56.0     2.6     55.3
DAYS MAX >= 90      0               0.1    -0.1        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         4.76   1948
 MINIMUM         0.12   1992
TOTALS           2.38              1.94    0.44     2.05
DAILY AVG.       0.08              0.06    0.02     0.07
DAYS >= .01        12              12.0     0.0       10
DAYS >= .10         7               6.0     1.0        5
DAYS >= .50         2               0.8     1.2        2
DAYS >= 1.00        0               0.0     0.0        0
GREATEST
 24 HR. TOTAL    0.57   05/21 TO 05/22

DEGREE_DAYS
HEATING TOTAL     203               285     -82      298
 SINCE 7/1       4283              4553    -270     4776
COOLING TOTAL      13                 6       7        3
 SINCE 1/1         13                 6       7        3
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.1
HIGHEST WIND SPEED/DIRECTION    28/250    DATE  05/13
HIGHEST GUST SPEED/DIRECTION    38/230    DATE  05/13

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY         14

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       6
LIGHT RAIN               17     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      1
HAZE                      3

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

$$