Climatological Report (Monthly)
Issued by NWS
Issued by NWS
188
CXUS56 KSEW 011031
CLMOLM
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
331 AM PDT TUE OCT 01 2024
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...THE OLYMPIA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2024...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1941 TO 2024
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 98 09/02/1988
LOW 25 09/27/1972
HIGHEST 95 09/05 MM MM 91 09/02
LOWEST 35 09/30 MM MM 35 09/21
09/30
AVG. MAXIMUM 73.1 72.1 1.0 72.5
AVG. MINIMUM 49.3 46.2 3.1 46.6
MEAN 61.2 59.1 2.1 59.6
DAYS MAX >= 90 2 0.4 1.6 1
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.2 -0.2 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 9.36 2013
MINIMUM T 2012
TOTALS 1.91 2.04 -0.13 2.30
DAILY AVG. 0.06 0.07 -0.01 0.08
DAYS >= .01 10 8.1 1.9 6
DAYS >= .10 5 4.6 0.4 6
DAYS >= .50 1 1.3 -0.3 1
DAYS >= 1.00 0 0.3 -0.3 0
GREATEST
24 HR. TOTAL 1.03 09/10 TO 09/11
DEGREE DAYS
HEATING TOTAL 140 183 -43 167
SINCE 7/1 219 325 -106 MM
COOLING TOTAL 33 8 25 11
SINCE 1/1 214 113 101 MM
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WIND (MPH)
AVERAGE WIND SPEED 4.3
HIGHEST WIND SPEED/DIRECTION 18/200 DATE 09/26
HIGHEST GUST SPEED/DIRECTION 26/210 DATE 09/26
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.48
NUMBER OF DAYS FAIR 10
NUMBER OF DAYS PC 15
NUMBER OF DAYS CLOUDY 5
AVERAGE RH (PERCENT) 75
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 3 RAIN 2
LIGHT RAIN 12 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 26 FOG W/VIS <= 1/4 MILE 10
HAZE 6
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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