237 CDUS46 KMTR 210845 CLIAPC CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1245 AM PST WED DEC 21 2016 ................................... ...THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 20 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 59 220 PM 67 1999 55 4 52 MINIMUM 32 719 AM 25 2008 36 -4 30 AVERAGE 46 45 1 41 PRECIPITATION (IN) YESTERDAY 0.00 0.78 MONTH TO DATE 3.54 1.86 SINCE OCT 1 8.29 3.27 SINCE JAN 1 22.96 7.37 DEGREE DAYS HEATING YESTERDAY 19 24 MONTH TO DATE 328 335 SINCE DEC 1 328 335 SINCE JUL 1 832 876 COOLING YESTERDAY 0 0 MONTH TO DATE 0 0 SINCE DEC 1 0 0 SINCE JAN 1 186 378 .................................................................. WIND (MPH) RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION NE (60) HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (110) HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION SE (120) AVERAGE WIND SPEED 4.9 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 89 500 AM LOWEST 43 100 PM AVERAGE 66 .......................................................... THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 55 71 1999 MINIMUM TEMPERATURE (F) 36 21 1998 SUNRISE AND SUNSET DECEMBER 21 2016......SUNRISE 722 AM PST SUNSET 453 PM PST DECEMBER 22 2016......SUNRISE 723 AM PST SUNSET 453 PM PST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$