515 CDUS46 KMTR 200842 CLISFO CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 141 AM PDT THU AUG 20 2015 ................................... ...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR AUGUST 19 2015... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1927 TO 2015 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL .................................................................. TEMPERATURE (F) YESTERDAY MAXIMUM 74 238 PM 89 1964 73 1 75 MINIMUM 59 349 AM 49 1955 56 3 60 1894 AVERAGE 67 65 2 68 PRECIPITATION (IN) YESTERDAY 0.00 0.56 1997 0.00 0.00 0.00 MONTH TO DATE T 0.02 -0.02 T SINCE OCT 1 16.59 20.46 -3.87 8.57 SINCE JAN 1 3.63 13.10 -9.47 7.31 SNOWFALL (IN) YESTERDAY 0.0 0.0 MONTH TO DATE 0.0 SINCE JUN 1 0.0 SINCE JUL 1 0.0 DEGREE DAYS HEATING YESTERDAY 0 1 -1 0 MONTH TO DATE 0 30 -30 1 SINCE JUN 1 80 200 -120 69 SINCE JUL 1 5 95 -90 20 COOLING YESTERDAY 2 1 1 3 MONTH TO DATE 60 19 41 39 SINCE JUN 1 140 64 76 157 SINCE JAN 1 153 83 70 220 .................................................................. WIND (MPH) RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION W (260) HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION W (250) HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION W (280) AVERAGE WIND SPEED 10.1 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.4 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 84 200 AM LOWEST 53 1200 PM AVERAGE 69 .......................................................... THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 73 84 1964 MINIMUM TEMPERATURE (F) 56 47 1955 SUNRISE AND SUNSET AUGUST 20 2015........SUNRISE 629 AM PDT SUNSET 756 PM PDT AUGUST 21 2015........SUNRISE 630 AM PDT SUNSET 754 PM PDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$