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000
CXUS56 KSEW 040421
CLMSEA

CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
821 PM PST SUN DEC 03 2023

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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF NOVEMBER 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             74   11/03/2010
                       11/04/1949
 LOW               6   11/15/1955
HIGHEST           63   11/04         MM      MM       57  11/04
LOWEST            28   11/27         MM      MM       29  11/30
                       11/28
AVG. MAXIMUM    51.0               52.1    -1.1     48.1
AVG. MINIMUM    38.7               40.9    -2.2     35.7
MEAN            44.8               46.5    -1.7     41.9
DAYS MAX >= 90     0                0.0     0.0       MM
DAYS MAX <= 32     0                0.1    -0.1       MM
DAYS MIN <= 32     6                3.0     3.0       MM
DAYS MIN <= 0      0                0.0     0.0       MM

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       15.63   2006
 MINIMUM        0.74   1996
TOTALS          5.78               6.31   -0.53     4.83
DAILY AVG.      0.19               0.21   -0.02     0.17
DAYS >= .01       15               18.4    -3.4       MM
DAYS >= .10       14               12.9     1.1       MM
DAYS >= .50        3                3.9    -0.9       MM
DAYS >= 1.00       2                1.4     0.6       MM
GREATEST
 24 HR. TOTAL   1.47   11/03 TO 11/04

SNOWFALL (INCHES)
RECORDS
 TOTAL          17.5   1985
TOTALS           0.0                0.2    -0.2      1.1
SINCE 7/1        0.0                0.2    -0.2       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        0                                   0
GREATEST
 SNOW DEPTH        0                                   0
 24 HR TOTAL     0.0                                  MM

DEGREE DAYS
HEATING TOTAL    598                555      43      662
 SINCE 7/1      1003               1061     -58       MM
COOLING TOTAL      0                  0       0        0
 SINCE 1/1       378                263     115       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.7
HIGHEST WIND SPEED/DIRECTION    31/210    DATE  11/19
HIGHEST GUST SPEED/DIRECTION    43/210    DATE  11/19

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.67
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY         15

AVERAGE RH (PERCENT)     78

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       9
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      26     FOG W/VIS <= 1/4 MILE     10
HAZE                      4

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

$$