Climatological Report (Monthly) Issued by NWS
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.
$$