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000
CXUS56 KSEW 011032
CLMSEA

CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
332 AM PDT WED NOV 01 2023

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

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 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             89   10/01/1987
 LOW              28   10/19/1949
HIGHEST           79   10/07         MM      MM       88  10/16
LOWEST            32   10/29         MM      MM       41  10/23
                                                          10/26
AVG. MAXIMUM    61.7               60.5     1.2     66.2
AVG. MINIMUM    47.3               47.0     0.3     49.1
MEAN            54.5               53.8     0.7     57.6
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     1                0.2     0.8        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       10.05   2016
 MINIMUM        0.31   1987
TOTALS          2.89               3.91   -1.02     2.51
DAILY AVG.      0.10               0.13   -0.03     0.08
DAYS >= .01       12               14.3    -2.3        8
DAYS >= .10        7                8.4    -1.4        7
DAYS >= .50        2                2.6    -0.6        1
DAYS >= 1.00       0                0.7    -0.7        0
GREATEST
 24 HR. TOTAL   0.77   10/24 TO 10/25

SNOWFALL (INCHES)
RECORDS
 TOTAL            MM   MM
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1        0.0                0.0     0.0       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    285                349     -64      233
 SINCE 7/1       405                506    -101       MM
COOLING TOTAL      0                  0       0       13
 SINCE 1/1       378                263     115       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              6.8
HIGHEST WIND SPEED/DIRECTION    22/180    DATE  10/10
                                22/220          10/23
HIGHEST GUST SPEED/DIRECTION    35/180    DATE  10/10

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.61
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY         13

AVERAGE RH (PERCENT)     75

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       5
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      19     FOG W/VIS <= 1/4 MILE      4
HAZE                      7

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

$$