CDUS46 KMTR 160835 CLIAPC CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1235 AM PST TUE DEC 16 2025 ................................... ...THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 15 2025... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1998 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 49 2:13 PM 66 2023 57 -8 MM MINIMUM 40 7:07 AM 26 2005 38 2 MM AVERAGE 45 47 -2 MM PRECIPITATION (IN) YESTERDAY 0.00 MM MONTH TO DATE T 1.13 SINCE OCT 1 3.46 5.39 SINCE JAN 1 11.78 19.23 DEGREE DAYS HEATING YESTERDAY 20 MM MONTH TO DATE 296 177 SINCE DEC 1 296 177 SINCE JUL 1 771 717 COOLING YESTERDAY 0 MM MONTH TO DATE 0 0 SINCE DEC 1 0 0 SINCE JAN 1 211 444 ................................................................... WIND (MPH) RESULTANT WIND SPEED 7 RESULTANT WIND DIRECTION E (100) HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION E (100) HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION E (90) AVERAGE WIND SPEED 7.4 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.7 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 100 1:00 AM LOWEST 83 12:00 PM AVERAGE 92 .......................................................... THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 57 70 2023 MINIMUM TEMPERATURE (F) 37 28 2006 2015 SUNRISE AND SUNSET DECEMBER 16 2025......SUNRISE 7:19 AM PST SUNSET 4:51 PM PST DECEMBER 17 2025......SUNRISE 7:20 AM PST SUNSET 4:51 PM PST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$