771
CXUS56 KSEW 011032
CLMSEA

CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
332 AM PDT TUE APR 01 2025

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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MARCH 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             79   03/20/2019
                       03/19/2019
 LOW              11   03/04/1955
HIGHEST           73   03/25         MM      MM       74  03/16
LOWEST            34   03/14         MM      MM       28  03/06
                       03/18
AVG. MAXIMUM    53.6               54.2    -0.6     54.1
AVG. MINIMUM    40.5               39.9     0.6     40.2
MEAN            47.1               47.1    -0.0     47.1
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                1.9    -1.9        3
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        9.44   2014
 MINIMUM        0.57   1965
TOTALS          5.16               4.17    0.99     2.36
DAILY AVG.      0.17               0.13    0.04     0.08
DAYS >= .01       21               17.1     3.9       16
DAYS >= .10       12               10.9     1.1       10
DAYS >= .50        3                2.1     0.9        1
DAYS >= 1.00       0                0.4    -0.4        0
GREATEST
 24 HR. TOTAL   0.87   03/15 TO 03/16

SNOWFALL (INCHES)
RECORDS
 TOTAL          18.2   1951
TOTALS           0.0                0.4    -0.4      0.3
SINCE 7/1        2.3                6.3    -4.0       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        0                                   0
GREATEST
 SNOW DEPTH        0                                   0
 24 HR TOTAL      MM                                 0.3

DEGREE DAYS
HEATING TOTAL    546                557     -11      549
 SINCE 7/1      3703               3604      99       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1         0                  0       0       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.5
HIGHEST WIND SPEED/DIRECTION    29/210    DATE  03/19
                                29/120          03/30
HIGHEST GUST SPEED/DIRECTION    44/100    DATE  03/30

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.83
NUMBER OF DAYS FAIR            0
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY         24

AVERAGE RH (PERCENT)     76

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       6
LIGHT RAIN               25     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      1
FOG                      19     FOG W/VIS <= 1/4 MILE      3
HAZE                      1

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

$$