081 CDUS46 KMTR 170840 CLIAPC CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1239 AM PST MON DEC 17 2018 ................................... ...THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 16 2018... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1998 TO 2018 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL .................................................................. TEMPERATURE (F) YESTERDAY MAXIMUM 62 1233 PM 69 2011 55 7 65 MINIMUM 48 158 AM 28 2015 36 12 30 2006 AVERAGE 55 46 9 48 PRECIPITATION (IN) YESTERDAY 0.57 0.00 MONTH TO DATE 1.35 0.01 SINCE OCT 1 2.61 2.98 SINCE JAN 1 15.38 31.16 DEGREE DAYS HEATING YESTERDAY 10 17 MONTH TO DATE 241 265 SINCE DEC 1 241 265 SINCE JUL 1 808 793 COOLING YESTERDAY 0 0 MONTH TO DATE 0 0 SINCE DEC 1 0 0 SINCE JAN 1 182 530 .................................................................. WIND (MPH) RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION SE (130) HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION W (270) HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SW (240) AVERAGE WIND SPEED 4.8 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 1.0 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. HEAVY RAIN RAIN LIGHT RAIN FOG HAZE RELATIVE HUMIDITY (PERCENT) HIGHEST 100 300 AM LOWEST 69 1100 AM AVERAGE 85 .......................................................... THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 55 66 2017 2000 MINIMUM TEMPERATURE (F) 36 24 2008 SUNRISE AND SUNSET DECEMBER 17 2018......SUNRISE 720 AM PST SUNSET 451 PM PST DECEMBER 18 2018......SUNRISE 720 AM PST SUNSET 451 PM PST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$