Climatological Report (Monthly)
Issued by NWS

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000
CXUS56 KSEW 011030
CLMSEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
230 AM PST SUN FEB 1 2015

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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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              64   01/20/1981
 LOW                0   01/31/1950
HIGHEST            63   01/25        MM      MM       58  01/11
LOWEST             26   01/01        MM      MM       31  01/06
                                                          01/05
AVG. MAXIMUM     50.3              47.2     3.1     49.3
AVG. MINIMUM     39.8              36.9     2.9     39.4
MEAN             45.1              42.0     3.1     44.3
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.4    -0.4        0
DAYS MIN <= 32      3               6.4    -3.4        2
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        12.92   1953
 MINIMUM         0.58   1985
TOTALS           3.66              5.57   -1.91     3.70
DAILY AVG.       0.12              0.18   -0.06     0.12
DAYS >= .01        14              18.2    -4.2       13
DAYS >= .10         7              12.1    -5.1        8
DAYS >= .50         2               3.7    -1.7        2
DAYS >= 1.00        1               0.8     0.2        0
GREATEST
 24 HR. TOTAL    1.62   01/17 TO 01/18

SNOWFALL (INCHES)
RECORDS
 TOTAL           57.2   1950
TOTALS            0.0               1.4    -1.4      0.0
SINCE 7/1         0.8               4.3    -3.5      1.1
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0                                  0
GREATEST
 SNOW DEPTH         0   MM                             0
 24 HR TOTAL      0.0   01/31 TO 01/31               0.0

DEGREE_DAYS
HEATING TOTAL     612               711     -99      632
 SINCE 7/1       2055              2649    -594     2432
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.4
HIGHEST WIND SPEED/DIRECTION    40/220    DATE  01/18
HIGHEST GUST SPEED/DIRECTION    59/220    DATE  01/18

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            2
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY         16

AVERAGE RH (PERCENT)     84

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       4
LIGHT RAIN               18     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      28     FOG W/VIS <= 1/4 MILE     15
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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