163
CDUS46 KSEW 120831
CLISEA
CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
131 AM PDT SAT MAY 12 2012
...............................
..THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR MAY 11 2012
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2012
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
..............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 65 420 PM 87 1971 64 1 51
MINIMUM 40 518 AM 35 1953 46 -6 42
AVERAGE 53 55 -2 47
PRECIPITATION (IN)
YESTERDAY 0.00 0.47 1954 0.06 -0.06 0.42
MONTH TO DATE 0.84 0.71 0.13 0.82
SINCE OCT 1 32.03 31.61 0.42 38.60
SINCE JAN 1 21.18 16.21 4.97 19.62
DEGREE DAYS
HEATING
YESTERDAY 12 10 2 18
MONTH TO DATE 150 121 29 157
SINCE MAR 1 1241 1135 106 1344
SINCE JUL 1 4628 4389 239 4701
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE MAR 1 0 0 0 0
SINCE JAN 1 0 0 0 0
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WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION N (10)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 9.6
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 79 500 AM
LOWEST 26 500 PM
AVERAGE 53
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THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 64 81 1959
MINIMUM TEMPERATURE (F) 47 38 2011
1985
1964
SUNRISE AND SUNSET
MAY 12 2012...........SUNRISE 535 AM PDT SUNSET 836 PM PDT
MAY 13 2012...........SUNRISE 534 AM PDT SUNSET 838 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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