629 CDUS46 KMTR 010845 CLIAPC CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1245 AM PST TUE JAN 1 2019 ................................... ...THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 31 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 57 229 PM 62 2011 54 3 57 MINIMUM 34 116 AM 24 2015 36 -2 32 AVERAGE 46 45 1 45 PRECIPITATION (IN) YESTERDAY 0.00 0.00 MONTH TO DATE 1.94 0.06 SINCE OCT 1 3.20 3.03 SINCE JAN 1 15.97 31.21 DEGREE DAYS HEATING YESTERDAY 19 20 MONTH TO DATE 486 548 SINCE DEC 1 486 548 SINCE JUL 1 1053 1076 COOLING YESTERDAY 0 0 MONTH TO DATE 0 0 SINCE DEC 1 0 0 SINCE JAN 1 182 530 .................................................................. WIND (MPH) RESULTANT WIND SPEED 16 RESULTANT WIND DIRECTION N (0) HIGHEST WIND SPEED 35 HIGHEST WIND DIRECTION N (10) HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION N (20) AVERAGE WIND SPEED 16.3 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.1 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. FOG FOG W/VISIBILITY <= 1/4 MILE RELATIVE HUMIDITY (PERCENT) HIGHEST 100 100 AM LOWEST 23 200 PM AVERAGE 62 .......................................................... THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 54 64 2018 MINIMUM TEMPERATURE (F) 36 25 2016 2014 SUNRISE AND SUNSET JANUARY 1 2019.......SUNRISE 726 AM PST SUNSET 500 PM PST JANUARY 2 2019.......SUNRISE 726 AM PST SUNSET 501 PM PST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$