Climatological Report (Monthly)
Issued by NWS
Issued by NWS
885
CXUS56 KSEW 030326 CCA
CLMSEA
CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE SEATTLE
825 PM PDT SUN SEP 02 2024
...................................
...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2024...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 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 99 08/09/1981
08/09/1960
LOW 44 08/14/1955
08/13/1955
08/27/1952
HIGHEST 87 08/01 MM MM 95 08/15
08/08
08/16
LOWEST 50 08/28 MM MM 52 08/19
AVG. MAXIMUM 75.9 77.6 -1.7 79.9
AVG. MINIMUM 57.2 57.2 0.0 59.9
MEAN 66.6 67.4 -0.8 69.9
DAYS MAX >= 90 0 1.2 -1.2 4
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 4.59 1975
MINIMUM T 2012
TOTALS 1.66 0.97 0.69 0.27
DAILY AVG. 0.05 0.03 0.02 0.01
DAYS >= .01 7 4.9 2.1 8
DAYS >= .10 5 2.3 2.7 1
DAYS >= .50 0 0.6 -0.6 0
DAYS >= 1.00 0 0.1 -0.1 0
GREATEST
24 HR. TOTAL 0.62 08/23 TO 08/24
DEGREE DAYS
HEATING TOTAL 29 24 5 10
SINCE 7/1 36 55 -19 MM
COOLING TOTAL 83 98 -15 169
SINCE 1/1 273 233 40 MM
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WIND (MPH)
AVERAGE WIND SPEED 7.1
HIGHEST WIND SPEED/DIRECTION 29/200 DATE 08/17
HIGHEST GUST SPEED/DIRECTION 44/250 DATE 08/18
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.54
NUMBER OF DAYS FAIR 8
NUMBER OF DAYS PC 16
NUMBER OF DAYS CLOUDY 7
AVERAGE RH (PERCENT) 68
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 3
LIGHT RAIN 9 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 13 FOG W/VIS <= 1/4 MILE 1
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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