Climatological Report (Monthly)
Issued by NWS
Issued by NWS
905
CXUS56 KSEW 011031
CLMOLM
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
331 AM PDT THU MAY 01 2025
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...THE OLYMPIA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF APRIL 2025...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1941 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 88 04/18/2016
LOW 23 04/13/2020
04/02/2008
04/08/1975
HIGHEST 77 04/18 MM MM 74 04/23
LOWEST 28 04/13 MM MM 25 04/17
AVG. MAXIMUM 62.7 58.9 3.8 59.9
AVG. MINIMUM 35.6 37.5 -1.9 37.4
MEAN 49.2 48.2 1.0 48.6
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 10 6.4 3.6 7
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 7.80 1991
MINIMUM 0.37 1956
TOTALS 2.43 3.67 -1.24 2.46
DAILY AVG. 0.08 0.12 -0.04 0.08
DAYS >= .01 10 16.3 -6.3 14
DAYS >= .10 5 9.6 -4.6 7
DAYS >= .50 3 1.6 1.4 1
DAYS >= 1.00 0 0.4 -0.4 0
GREATEST
24 HR. TOTAL 1.00 04/07 TO 04/08
DEGREE DAYS
HEATING TOTAL 468 504 -36 483
SINCE 7/1 4515 4861 -346 MM
COOLING TOTAL 0 0 0 0
SINCE 1/1 0 0 0 MM
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WIND (MPH)
AVERAGE WIND SPEED 5.3
HIGHEST WIND SPEED/DIRECTION 25/180 DATE 04/08
25/200 04/10
HIGHEST GUST SPEED/DIRECTION 42/170 DATE 04/10
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.37
NUMBER OF DAYS FAIR 14
NUMBER OF DAYS PC 10
NUMBER OF DAYS CLOUDY 6
AVERAGE RH (PERCENT) 69
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 2
LIGHT RAIN 11 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 15 FOG W/VIS <= 1/4 MILE 4
HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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