Climatological Report (Monthly) Issued by NWS
000
CXUS56 KSEW 011039
CLMSEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
339 AM PDT SAT APR 01 2023
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...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MARCH 2023...
CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1945 TO 2023
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 65 03/18 MM MM 63 03/22
03/27
LOWEST 28 03/01 MM MM 29 03/10
AVG. MAXIMUM 51.9 54.2 -2.3 53.1
AVG. MINIMUM 37.1 39.9 -2.8 40.8
MEAN 44.5 47.1 -2.6 46.9
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 5 1.9 3.1 2
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 9.44 2014
MINIMUM 0.57 1965
TOTALS 2.56 4.17 -1.61 3.32
DAILY AVG. 0.08 0.13 -0.05 0.11
DAYS >= .01 15 17.1 -2.1 18
DAYS >= .10 9 10.9 -1.9 11
DAYS >= .50 0 2.1 -2.1 1
DAYS >= 1.00 0 0.4 -0.4 0
GREATEST
24 HR. TOTAL 0.65 03/12 TO 03/13
SNOWFALL (INCHES)
RECORDS
TOTAL 18.2 1951
TOTALS T 0.4 -0.4 0.0
SINCE 7/1 8.1 6.3 1.8 MM
SNOWDEPTH AVG. 0 0
DAYS >= 1.0 0 0
GREATEST
SNOW DEPTH 0 0
24 HR TOTAL MM 0.0
DEGREE DAYS
HEATING TOTAL 592 557 35 552
SINCE 7/1 3679 3604 75 MM
COOLING TOTAL 0 0 0 0
SINCE 1/1 0 0 0 MM
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WIND (MPH)
AVERAGE WIND SPEED 8.9
HIGHEST WIND SPEED/DIRECTION 29/200 DATE 03/02
HIGHEST GUST SPEED/DIRECTION 43/120 DATE 03/09
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.75
NUMBER OF DAYS FAIR 0
NUMBER OF DAYS PC 14
NUMBER OF DAYS CLOUDY 17
AVERAGE RH (PERCENT) 66
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 1
HEAVY RAIN 0 RAIN 2
LIGHT RAIN 19 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 2 SLEET 0
FOG 15 FOG W/VIS <= 1/4 MILE 1
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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