Climatological Report (Monthly) Issued by NWS
000
CXUS56 KSEW 011131
CLMSEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE
331 AM PST THU FEB 01 2024
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...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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 64 01/15/2018
01/20/1981
LOW 0 01/31/1950
HIGHEST 61 01/28 MM MM 59 01/05
01/29
01/30
01/14
LOWEST 15 01/12 MM MM 24 01/30
01/13
AVG. MAXIMUM 46.5 48.0 -1.5 48.4
AVG. MINIMUM 36.7 37.7 -1.0 38.6
MEAN 41.6 42.8 -1.2 43.5
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 3 0.4 2.6 0
DAYS MIN <= 32 7 7.0 0.0 5
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 12.92 1953
MINIMUM 0.58 1985
TOTALS 6.31 5.78 0.53 3.09
DAILY AVG. 0.22 0.19 0.03 0.10
DAYS >= .01 22 18.7 3.3 18
DAYS >= .10 18 12.7 5.3 10
DAYS >= .50 3 3.9 -0.9 0
DAYS >= 1.00 0 0.9 -0.9 0
GREATEST
24 HR. TOTAL 1.13 01/27 TO 01/28
SNOWFALL (INCHES)
RECORDS
TOTAL 57.2 1950
TOTALS T 1.8 -1.8 0.1
SINCE 7/1 T 3.7 -3.7 MM
SNOWDEPTH AVG. 0 0
DAYS >= 1.0 0 0
GREATEST
SNOW DEPTH 0 0
24 HR TOTAL MM MM
DEGREE DAYS
HEATING TOTAL 698 687 11 658
SINCE 7/1 2297 2462 -165 MM
COOLING TOTAL 0 0 0 0
SINCE 1/1 0 0 0 MM
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WIND (MPH)
AVERAGE WIND SPEED 8.1
HIGHEST WIND SPEED/DIRECTION 35/230 DATE 01/09
HIGHEST GUST SPEED/DIRECTION 52/220 DATE 01/09
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.87
NUMBER OF DAYS FAIR 0
NUMBER OF DAYS PC 5
NUMBER OF DAYS CLOUDY 26
AVERAGE RH (PERCENT) 75
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 5
LIGHT RAIN 25 FREEZING RAIN 0
LT FREEZING RAIN 2 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 2 SLEET 0
FOG 23 FOG W/VIS <= 1/4 MILE 2
HAZE 6
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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