Climatological Report (Monthly) Issued by NWS
000
CXUS56 KSEW 011031
CLMSEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
331 AM PDT MON APR 01 2024
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...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MARCH 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 79 03/20/2019
03/19/2019
LOW 11 03/04/1955
HIGHEST 74 03/16 MM MM 65 03/18
LOWEST 28 03/06 MM MM 28 03/01
AVG. MAXIMUM 54.1 54.2 -0.1 51.9
AVG. MINIMUM 40.3 39.9 0.4 37.1
MEAN 47.2 47.1 0.1 44.5
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 3 1.9 1.1 5
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 9.44 2014
MINIMUM 0.57 1965
TOTALS 2.22 4.17 -1.95 2.56
DAILY AVG. 0.07 0.13 -0.06 0.08
DAYS >= .01 16 17.1 -1.1 15
DAYS >= .10 9 10.9 -1.9 9
DAYS >= .50 1 2.1 -1.1 0
DAYS >= 1.00 0 0.4 -0.4 0
GREATEST
24 HR. TOTAL 0.54
SNOWFALL (INCHES)
RECORDS
TOTAL 18.2 1951
TOTALS 0.3 0.4 -0.1 T
SINCE 7/1 0.3 6.3 -6.0 MM
SNOWDEPTH AVG. 0 0
DAYS >= 1.0 0 0
GREATEST
SNOW DEPTH 0 0
24 HR TOTAL MM MM
DEGREE DAYS
HEATING TOTAL 547 557 -10 592
SINCE 7/1 3437 3604 -167 MM
COOLING TOTAL 0 0 0 0
SINCE 1/1 0 0 0 MM
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WIND (MPH)
AVERAGE WIND SPEED 8.0
HIGHEST WIND SPEED/DIRECTION 32/200 DATE 03/09
HIGHEST GUST SPEED/DIRECTION 44/200 DATE 03/09
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.68
NUMBER OF DAYS FAIR 5
NUMBER OF DAYS PC 9
NUMBER OF DAYS CLOUDY 17
AVERAGE RH (PERCENT) 69
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 MIXED PRECIP 1
HEAVY RAIN 0 RAIN 5
LIGHT RAIN 17 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 1
LIGHT SNOW 4 SLEET 0
FOG 14 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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