Climatological Report (Monthly)
Issued by NWS
Issued by NWS
000 CXUS56 KSEW 011031 CLMSEA CLIMATE REPORT NATIONAL WEATHER SERVICE SEATTLE 331 AM PDT FRI SEP 01 2023 ................................... ...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF AUGUST 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 99 08/09/1981 08/09/1960 LOW 44 08/14/1955 08/13/1955 08/27/1952 HIGHEST 95 08/15 MM MM 91 08/08 08/16 LOWEST 52 08/19 MM MM 53 08/03 08/28 AVG. MAXIMUM 79.9 77.6 2.3 80.9 AVG. MINIMUM 59.9 57.2 2.7 59.1 MEAN 69.9 67.4 2.5 70.0 DAYS MAX >= 90 4 1.2 2.8 4 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 0 0.0 0.0 0 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 4.59 1975 MINIMUM T 2012 TOTALS 0.27 0.97 -0.70 0.05 DAILY AVG. 0.01 0.03 -0.02 0.00 DAYS >= .01 8 4.9 3.1 2 DAYS >= .10 1 2.3 -1.3 0 DAYS >= .50 0 0.6 -0.6 0 DAYS >= 1.00 0 0.1 -0.1 0 GREATEST 24 HR. TOTAL 0.12 08/29 TO 08/29 DEGREE DAYS HEATING TOTAL 10 24 -14 3 SINCE 7/1 12 55 -43 MM COOLING TOTAL 169 98 71 167 SINCE 1/1 352 233 119 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 7.1 HIGHEST WIND SPEED/DIRECTION 22/210 DATE 08/09 HIGHEST GUST SPEED/DIRECTION 28/200 DATE 08/09 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.49 NUMBER OF DAYS FAIR 11 NUMBER OF DAYS PC 13 NUMBER OF DAYS CLOUDY 7 AVERAGE RH (PERCENT) 60 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 2 MIXED PRECIP 0 HEAVY RAIN 0 RAIN 2 LIGHT RAIN 9 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 8 FOG W/VIS <= 1/4 MILE 1 HAZE 8 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$