126
CXUS56 KSEW 011729 CCA
CLMSEW
CLIMATE REPORT...CORRECTED MEAN TEMP
NATIONAL WEATHER SERVICE SEATTLE
1029 AM PDT WED OCT 01 2025
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...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
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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
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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.
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