515 CDUS46 KMTR 200837 CLIAPC CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1237 AM PST SUN DEC 20 2015 ................................... ...THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 19 2015... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1998 TO 2015 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL .................................................................. TEMPERATURE (F) YESTERDAY MAXIMUM 57 146 PM 78 1999 55 2 56 MINIMUM 32 1134 PM 21 2006 36 -4 51 AVERAGE 45 45 0 54 PRECIPITATION (IN) YESTERDAY 0.05 0.85 MONTH TO DATE 1.08 10.14 SINCE OCT 1 2.49 12.39 SINCE JAN 1 6.59 21.04 DEGREE DAYS HEATING YESTERDAY 20 11 MONTH TO DATE 311 205 SINCE DEC 1 311 205 SINCE JUL 1 852 678 COOLING YESTERDAY 0 0 MONTH TO DATE 0 0 SINCE DEC 1 0 0 SINCE JAN 1 378 267 .................................................................. WIND (MPH) RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION W (270) HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION W (270) HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION W (270) AVERAGE WIND SPEED 3.4 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.5 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. HEAVY RAIN RAIN LIGHT RAIN FOG FOG W/VISIBILITY <= 1/4 MILE RELATIVE HUMIDITY (PERCENT) HIGHEST 100 100 AM LOWEST 59 200 PM AVERAGE 80 .......................................................... THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 55 67 1999 MINIMUM TEMPERATURE (F) 36 25 2008 SUNRISE AND SUNSET DECEMBER 20 2015......SUNRISE 721 AM PST SUNSET 452 PM PST DECEMBER 21 2015......SUNRISE 722 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. $$