Climatological Report (Monthly)
Issued by NWS
Issued by NWS
781 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. $$