381 CDUS46 KMTR 180836 CLISFO CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 135 AM PDT MON MAY 18 2015 ................................... ...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR MAY 17 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 62 1225 PM 93 2009 68 -6 67 1997 MINIMUM 55 1146 PM 45 1996 52 3 57 AVERAGE 59 60 -1 62 PRECIPITATION (IN) YESTERDAY 0.00 0.24 1994 0.01 -0.01 0.00 MONTH TO DATE 0.00 0.31 -0.31 T SINCE OCT 1 16.31 20.17 -3.86 8.57 SINCE JAN 1 3.35 12.81 -9.46 7.31 SNOWFALL (IN) YESTERDAY 0.0 0.0 MONTH TO DATE 0.0 SINCE MAR 1 0.0 SINCE JUL 1 0.0 DEGREE DAYS HEATING YESTERDAY 6 6 0 3 MONTH TO DATE 106 108 -2 44 SINCE MAR 1 437 670 -233 379 SINCE JUL 1 1384 2476 -1092 1924 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 41 SINCE MAR 1 13 6 7 62 SINCE JAN 1 13 6 7 62 .................................................................. WIND (MPH) RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION W (260) HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION W (260) HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION NW (300) AVERAGE WIND SPEED 12.1 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.9 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 77 1200 AM LOWEST 60 1200 PM AVERAGE 69 .......................................................... THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 68 85 1978 MINIMUM TEMPERATURE (F) 52 42 1974 1950 SUNRISE AND SUNSET MAY 18 2015...........SUNRISE 558 AM PDT SUNSET 815 PM PDT MAY 19 2015...........SUNRISE 557 AM PDT SUNSET 815 PM PDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$