048 CDUS46 KSEW 230827 CLISEA CLIMATE REPORT NATIONAL WEATHER SERVICE SEATTLE WA 127 AM PDT MON SEP 23 2013 ................................... ...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 22 2013... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1945 TO 2013 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL .................................................................. TEMPERATURE (F) YESTERDAY MAXIMUM 63 329 PM 92 1990 69 -6 67 MINIMUM 56 1159 PM 37 1955 51 5 53 AVERAGE 60 60 0 60 PRECIPITATION (IN) YESTERDAY 0.53 1.65 1978 0.06 0.47 0.01 MONTH TO DATE 2.84 1.00 1.84 0.03 SINCE OCT 1 44.08 36.99 7.09 37.27 SINCE JAN 1 22.24 21.59 0.65 26.42 DEGREE DAYS HEATING YESTERDAY 5 6 -1 5 MONTH TO DATE 20 77 -57 53 SINCE SEP 1 20 77 -57 53 SINCE JUL 1 35 162 -127 117 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 55 19 36 27 SINCE SEP 1 55 19 36 27 SINCE JAN 1 385 187 198 176 .................................................................. WIND (MPH) RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION S (180) HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION S (180) HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION S (190) AVERAGE WIND SPEED 12.4 SKY COVER AVERAGE SKY COVER 0.8 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. HEAVY RAIN RAIN LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 86 1200 PM LOWEST 64 1000 AM AVERAGE 75 .......................................................... THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 68 83 1957 MINIMUM TEMPERATURE (F) 51 40 1948 SUNRISE AND SUNSET SEPTEMBER 23 2013.....SUNRISE 658 AM PDT SUNSET 704 PM PDT SEPTEMBER 24 2013.....SUNRISE 659 AM PDT SUNSET 702 PM PDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$