Climatological Report (Monthly)
Issued by NWS Seattle/Tacoma, WA
Issued by NWS Seattle/Tacoma, WA
000 CXUS56 KSEW 011050 CLMSEW CLIMATE REPORT NATIONAL WEATHER SERVICE SEATTLE 350 AM PDT SUN OCT 01 2023 ................................... ...THE SEATTLE WA WFO CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1894 TO 2023 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 86 09/02 MM MM 88 09/10 LOWEST 44 09/30 MM MM 48 09/19 AVG. MAXIMUM 71.1 71.3 -0.2 75.2 AVG. MINIMUM 53.1 53.2 -0.1 55.6 MEAN 62.1 62.3 -0.2 65.4 DAYS MAX >= 90 0 0.1 -0.1 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 3.69 1.74 1.95 0.13 DAILY AVG. 0.12 0.06 0.06 0.00 DAYS >= .01 11 8.8 2.2 3 DAYS >= .10 7 4.6 2.4 0 DAYS >= .50 3 1.0 2.0 0 DAYS >= 1.00 1 0.1 0.9 0 DEGREE DAYS HEATING TOTAL 101 106 -5 24 SINCE 7/1 106 162 -56 MM COOLING TOTAL 23 24 -1 45 SINCE 1/1 341 210 131 MM ................................................................ WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 1 MIXED PRECIP 0 HEAVY RAIN 1 RAIN 3 LIGHT RAIN 11 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 3 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. $$