CXUS56 KSEW 011032
CLMSEA

CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
332 AM PDT WED APR 01 2026

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...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MARCH 2026...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2026

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           58   03/20         MM      MM       73  03/25
                       03/27
                       03/31
LOWEST            32   03/13         MM      MM       34  03/14
                       03/30
                                                          03/18
AVG. MAXIMUM    51.9               54.2    -2.3     53.6
AVG. MINIMUM    39.7               39.9    -0.2     40.5
MEAN            45.8               47.1    -1.3     47.1
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     2                1.9     0.1        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        9.44   2014
 MINIMUM        0.57   1965
TOTALS          6.71               4.17    2.54     5.16
DAILY AVG.      0.22               0.13    0.09     0.17
DAYS >= .01       20               17.1     2.9       21
DAYS >= .10       12               10.9     1.1       12
DAYS >= .50        4                2.1     1.9        3
DAYS >= 1.00       2                0.4     1.6        0
GREATEST
 24 HR. TOTAL   1.45   03/12 TO 03/13

SNOWFALL (INCHES)
RECORDS
 TOTAL          18.2   1951
TOTALS           3.0                0.4     2.6      0.0
SINCE 7/1        3.0                6.3    -3.3       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        1                                  MM
GREATEST
 SNOW DEPTH        3   03/14                           0
 24 HR TOTAL      MM                                  MM

DEGREE DAYS
HEATING TOTAL    585                557      28      546
 SINCE 7/1      3335               3604    -269       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1         0                  0       0       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.9
HIGHEST WIND SPEED/DIRECTION    35/210    DATE  03/11
HIGHEST GUST SPEED/DIRECTION    54/210    DATE  03/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.79
NUMBER OF DAYS FAIR            2
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY         22

AVERAGE RH (PERCENT)     77

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       3
LIGHT RAIN               23     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                2     SLEET                      0
FOG                      21     FOG W/VIS <= 1/4 MILE      4
HAZE                      1

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

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