469
CDUS46 KSEW 210839
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
139 AM PDT SAT SEP 21 2019
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...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 20 2019...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2019
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
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TEMPERATURE (F)
YESTERDAY
MAXIMUM 69 217 PM 88 1974 69 0 66
MINIMUM 58 1152 PM 40 1949 51 7 53
AVERAGE 64 60 4 60
PRECIPITATION (IN)
YESTERDAY T 1.05 1972 0.06 -0.06 0.05
MONTH TO DATE 2.53 0.89 1.64 0.91
SINCE OCT 1 35.03 36.88 -1.85 39.18
SINCE JAN 1 19.75 21.48 -1.73 20.32
DEGREE DAYS
HEATING
YESTERDAY 1 5 -4 5
MONTH TO DATE 26 66 -40 56
SINCE SEP 1 26 66 -40 56
SINCE JUL 1 39 151 -112 80
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 32 19 13 15
SINCE SEP 1 32 19 13 15
SINCE JAN 1 323 187 136 400
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WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION S (180)
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION SE (120)
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 4.7
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 600 AM
LOWEST 58 300 PM
AVERAGE 76
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 88 1974
1952
MINIMUM TEMPERATURE (F) 51 39 1960
SUNRISE AND SUNSET
SEPTEMBER 21 2019.....SUNRISE 654 AM PDT SUNSET 709 PM PDT
SEPTEMBER 22 2019.....SUNRISE 656 AM PDT SUNSET 707 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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