Climatological Report (Monthly)
Issued by NWS

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CXUS56 KSEW 011035
CLMSEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
335 AM PDT WED APR 1 2015

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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MARCH 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              78   03/29/2004
 LOW               11   03/04/1955
HIGHEST            69   03/26        MM      MM       66  03/24
LOWEST             31   03/04        MM      MM       34  03/22
AVG. MAXIMUM     57.9              53.7     4.2     55.2
AVG. MINIMUM     43.2              39.3     3.9     41.8
MEAN             50.5              46.5     4.0     48.5
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      2               1.6     0.4        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         9.44   2014
 MINIMUM         0.57   1965
TOTALS           4.47              3.72    0.75     9.44
DAILY AVG.       0.14              0.12    0.02     0.30
DAYS >= .01        16              16.9    -0.9       20
DAYS >= .10         8              10.6    -2.6       15
DAYS >= .50         2               1.6     0.4        8
DAYS >= 1.00        1               0.3     0.7        3
GREATEST
 24 HR. TOTAL    2.20   03/15 TO 03/15

SNOWFALL (INCHES)
RECORDS
 TOTAL           18.2   1951
TOTALS            0.0               0.8    -0.8        T
SINCE 7/1         0.8               6.8    -6.0      4.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0                                  0
GREATEST
 SNOW DEPTH         0   MM                             0
 24 HR TOTAL      0.0   03/31 TO 03/31                 T

DEGREE_DAYS
HEATING TOTAL     441               574    -133      504
 SINCE 7/1       2944              3828    -884     3579
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.5
HIGHEST WIND SPEED/DIRECTION    31/200    DATE  03/15
HIGHEST GUST SPEED/DIRECTION    39/190    DATE  03/15

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY         14

AVERAGE RH (PERCENT)     71

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      2
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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