Climatological Report (Monthly)
Issued by NWS

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000
CXUS56 KSEW 011039
CLMSEA

CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
339 AM PDT SAT APR 01 2023

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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MARCH 2023...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2023

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           65   03/18         MM      MM       63  03/22
                                                          03/27
LOWEST            28   03/01         MM      MM       29  03/10
AVG. MAXIMUM    51.9               54.2    -2.3     53.1
AVG. MINIMUM    37.1               39.9    -2.8     40.8
MEAN            44.5               47.1    -2.6     46.9
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     5                1.9     3.1        2
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        9.44   2014
 MINIMUM        0.57   1965
TOTALS          2.56               4.17   -1.61     3.32
DAILY AVG.      0.08               0.13   -0.05     0.11
DAYS >= .01       15               17.1    -2.1       18
DAYS >= .10        9               10.9    -1.9       11
DAYS >= .50        0                2.1    -2.1        1
DAYS >= 1.00       0                0.4    -0.4        0
GREATEST
 24 HR. TOTAL   0.65   03/12 TO 03/13

SNOWFALL (INCHES)
RECORDS
 TOTAL          18.2   1951
TOTALS             T                0.4    -0.4      0.0
SINCE 7/1        8.1                6.3     1.8       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        0                                   0
GREATEST
 SNOW DEPTH        0                                   0
 24 HR TOTAL      MM                                 0.0

DEGREE DAYS
HEATING TOTAL    592                557      35      552
 SINCE 7/1      3679               3604      75       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    29/200    DATE  03/02
HIGHEST GUST SPEED/DIRECTION    43/120    DATE  03/09

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.75
NUMBER OF DAYS FAIR            0
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY         17

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               1
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN               19     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                2     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      1
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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