


Climatological Report (Monthly)
Issued by NWS Seattle/Tacoma, WA
Issued by NWS Seattle/Tacoma, WA
126 CXUS56 KSEW 011729 CCA CLMSEW CLIMATE REPORT...CORRECTED MEAN TEMP NATIONAL WEATHER SERVICE SEATTLE 1029 AM PDT WED OCT 01 2025 ................................... ...THE SEATTLE WA WFO CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1894 TO 2025 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 93 09/03/1988 LOW 40 09/30/2019 HIGHEST 92 09/16 MM MM 89 09/05 LOWEST 49 09/19 MM MM 46 09/30 AVG. MAXIMUM 75.1 71.3 3.8 72.7 AVG. MINIMUM 55.6 53.2 2.4 54.9 MEAN 65.4 62.3 3.1 63.8 DAYS MAX >= 90 1 0.1 0.9 0 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 5.01 2013 MINIMUM 0.02 1991 TOTALS 0.97 1.74 -0.77 1.02 DAILY AVG. 0.03 0.06 -0.03 0.03 DAYS >= .01 5 8.8 -3.8 8 DAYS >= .10 3 4.6 -1.6 4 DAYS >= .50 1 1.0 0.0 1 DAYS >= 1.00 0 0.1 -0.1 0 DEGREE DAYS HEATING TOTAL 32 106 -74 79 SINCE 7/1 41 162 -121 MM COOLING TOTAL 50 24 26 53 SINCE 1/1 374 210 164 MM ................................................................ WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 0 RAIN 2 LIGHT RAIN 5 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 1 FOG W/VIS <= 1/4 MILE 0 HAZE 0 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$