959 CDUS46 KMTR 180845 CLIAPC CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1245 AM PST SUN DEC 18 2016 ................................... ...THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 17 2016... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1998 TO 2016 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL .................................................................. TEMPERATURE (F) YESTERDAY MAXIMUM 51 334 PM 66 2000 55 -4 55 MINIMUM 30 735 AM 24 2008 36 -6 34 AVERAGE 41 45 -4 45 PRECIPITATION (IN) YESTERDAY 0.00 0.00 MONTH TO DATE 3.54 0.64 SINCE OCT 1 8.29 2.05 SINCE JAN 1 22.96 6.15 DEGREE DAYS HEATING YESTERDAY 24 20 MONTH TO DATE 261 278 SINCE DEC 1 261 278 SINCE JUL 1 765 819 COOLING YESTERDAY 0 0 MONTH TO DATE 0 0 SINCE DEC 1 0 0 SINCE JAN 1 186 378 .................................................................. WIND (MPH) RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION NW (330) HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION W (280) HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION W (290) AVERAGE WIND SPEED 3.6 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.0 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 85 100 AM LOWEST 41 200 PM AVERAGE 63 .......................................................... 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 2016......SUNRISE 721 AM PST SUNSET 451 PM PST DECEMBER 19 2016......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. $$