447 CDUS46 KMTR 180827 CLIAPC CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1227 AM PST THU DEC 18 2014 ................................... ...THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 17 2014... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1998 TO 2014 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL .................................................................. TEMPERATURE (F) YESTERDAY MAXIMUM 57 223 PM 66 2000 55 2 64 MINIMUM 43 1218 AM 24 2008 36 7 35 AVERAGE 50 45 5 50 PRECIPITATION (IN) YESTERDAY 0.23 0.00 MONTH TO DATE 9.29 0.47 SINCE JUL 1 11.92 2.20 SINCE JAN 1 20.19 4.17 DEGREE DAYS HEATING YESTERDAY 15 15 MONTH TO DATE 182 405 SINCE DEC 1 182 405 SINCE JUL 1 655 1084 COOLING YESTERDAY 0 0 MONTH TO DATE 0 0 SINCE DEC 1 0 0 SINCE JAN 1 267 303 .................................................................. WIND (MPH) RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION S (160) HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION E (90) HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION E (80) AVERAGE WIND SPEED 5.5 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.9 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 100 1200 AM LOWEST 83 300 PM AVERAGE 92 .......................................................... THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 55 62 2003 MINIMUM TEMPERATURE (F) 36 21 2006 SUNRISE AND SUNSET DECEMBER 18 2014......SUNRISE 720 AM PST SUNSET 451 PM PST DECEMBER 19 2014......SUNRISE 721 AM PST SUNSET 452 PM PST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$