715 CDUS46 KMTR 220858 CLISFO CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1258 AM PST THU DEC 22 2016 ................................... ...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR DECEMBER 21 2016... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1927 TO 2016 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL .................................................................. TEMPERATURE (F) YESTERDAY MAXIMUM 62 251 PM 68 1999 56 6 59 MINIMUM 45 419 AM 28 1990 44 1 51 AVERAGE 54 50 4 55 PRECIPITATION (IN) YESTERDAY 0.00 1.73 1945 0.15 -0.15 0.92 MONTH TO DATE 3.98 2.59 1.39 2.98 SINCE OCT 1 8.30 5.92 2.38 4.40 SINCE JAN 1 20.74 19.21 1.53 8.05 SNOWFALL (IN) YESTERDAY 0.0 0.0 MONTH TO DATE 0.0 SINCE DEC 1 0.0 SINCE JUL 1 0.0 DEGREE DAYS HEATING YESTERDAY 11 15 -4 10 MONTH TO DATE 273 295 -22 262 SINCE DEC 1 273 295 -22 262 SINCE JUL 1 687 859 -172 619 COOLING YESTERDAY 0 0 0 0 MONTH TO DATE 0 0 0 0 SINCE DEC 1 0 0 0 0 SINCE JAN 1 142 164 -22 327 .................................................................. WIND (MPH) RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION E (80) HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NE (30) HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION NE (30) AVERAGE WIND SPEED 3.0 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 83 1000 PM LOWEST 36 200 PM AVERAGE 60 .......................................................... THE SAN FRANCISCO AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 56 68 1999 MINIMUM TEMPERATURE (F) 44 27 1990 SUNRISE AND SUNSET DECEMBER 22 2016......SUNRISE 722 AM PST SUNSET 455 PM PST DECEMBER 23 2016......SUNRISE 722 AM PST SUNSET 456 PM PST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$