747
CXUS56 KSEW 011134
CLMSEA

CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
334 AM PST SAT FEB 01 2025

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...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2025...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2025

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             64   01/15/2018
                       01/20/1981
 LOW               0   01/31/1950
HIGHEST           52   01/09         MM      MM       61  01/28
                                                          01/29
                                                          01/30
LOWEST            26   01/23         MM      MM       15  01/12
                       01/26
                       01/28
                                                          01/13
AVG. MAXIMUM    44.9               48.0    -3.1     46.5
AVG. MINIMUM    33.4               37.7    -4.3     36.7
MEAN            39.1               42.8    -3.7     41.6
DAYS MAX >= 90     0                0.0     0.0       MM
DAYS MAX <= 32     0                0.4    -0.4       MM
DAYS MIN <= 32    15                7.0     8.0        7
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       12.92   1953
 MINIMUM        0.58   1985
TOTALS          1.92               5.78   -3.86     6.52
DAILY AVG.      0.06               0.19   -0.13     0.21
DAYS >= .01       11               18.7    -7.7       MM
DAYS >= .10        5               12.7    -7.7       MM
DAYS >= .50        1                3.9    -2.9       MM
DAYS >= 1.00       0                0.9    -0.9       MM
GREATEST
 24 HR. TOTAL   0.87   01/30 TO 01/31

SNOWFALL (INCHES)
RECORDS
 TOTAL          57.2   1950
TOTALS           0.0                1.8    -1.8        T
SINCE 7/1        0.0                3.7    -3.7       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        0                                   0
GREATEST
 SNOW DEPTH        0                                   0
 24 HR TOTAL      MM                                  MM

DEGREE DAYS
HEATING TOTAL    792                687     105      719
 SINCE 7/1      2479               2462      17       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1         0                  0       0       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.0
HIGHEST WIND SPEED/DIRECTION    29/210    DATE  01/31
HIGHEST GUST SPEED/DIRECTION    41/220    DATE  01/31

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.64
NUMBER OF DAYS FAIR            7
NUMBER OF DAYS PC              8
NUMBER OF DAYS CLOUDY         16

AVERAGE RH (PERCENT)     80

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN               13     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      21     FOG W/VIS <= 1/4 MILE      8
HAZE                      1

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

$$