Climatological Report (Monthly) Issued by NWS
000
CXUS56 KSEW 011150
CLMSEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
350 AM PST FRI DEC 01 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 44.9 46.5 -1.6 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 MM 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.
$$