Climatological Report (Monthly)
Issued by NWS
Issued by NWS
350
CXUS56 KSEW 011137
CLMOLM
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
337 AM PST WED JAN 01 2025
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...THE OLYMPIA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 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 64 12/10/2014
12/01/1958
LOW -7 12/23/1983
HIGHEST 55 12/17 MM MM 62 12/04
12/18
12/05
LOWEST 26 12/05 MM MM 30 12/23
AVG. MAXIMUM 48.1 44.9 3.2 51.6
AVG. MINIMUM 36.2 32.8 3.4 39.3
MEAN 42.2 38.9 3.3 45.5
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.6 -0.6 0
DAYS MIN <= 32 9 14.3 -5.3 2
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 14.50 2015
MINIMUM 2.02 2013
TOTALS 10.16 7.85 2.31 10.72
DAILY AVG. 0.34 0.25 0.09 0.35
DAYS >= .01 21 20.2 0.8 20
DAYS >= .10 18 13.6 4.4 17
DAYS >= .50 9 5.2 3.8 6
DAYS >= 1.00 1 1.9 -0.9 3
GREATEST
24 HR. TOTAL 2.87 12/17 TO 12/18
DEGREE DAYS
HEATING TOTAL 676 811 -135 597
SINCE 7/1 1863 2240 -377 MM
COOLING TOTAL 0 0 0 0
SINCE 1/1 214 113 101 MM
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WIND (MPH)
AVERAGE WIND SPEED 4.9
HIGHEST WIND SPEED/DIRECTION 31/180 DATE 12/14
HIGHEST GUST SPEED/DIRECTION 56/180 DATE 12/14
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.78
NUMBER OF DAYS FAIR 3
NUMBER OF DAYS PC 4
NUMBER OF DAYS CLOUDY 23
AVERAGE RH (PERCENT) 90
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 4 RAIN 11
LIGHT RAIN 22 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 28 FOG W/VIS <= 1/4 MILE 15
HAZE 1
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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