CDUS46 KMTR 120827 CLIAPC CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1227 AM PST FRI DEC 12 2025 ................................... ...THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 11 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 48 3:09 PM 66 2017 58 -10 59 MINIMUM 43 11:59 PM 25 2013 38 5 35 AVERAGE 46 48 -2 47 PRECIPITATION (IN) YESTERDAY 0.00 0.06 MONTH TO DATE T 0.06 SINCE OCT 1 3.46 4.32 SINCE JAN 1 11.78 18.16 DEGREE DAYS HEATING YESTERDAY 19 18 MONTH TO DATE 211 152 SINCE DEC 1 211 152 SINCE JUL 1 686 692 COOLING YESTERDAY 0 0 MONTH TO DATE 0 0 SINCE DEC 1 0 0 SINCE JAN 1 211 444 ................................................................... WIND (MPH) RESULTANT WIND SPEED 13 RESULTANT WIND DIRECTION E (90) HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION E (90) HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION E (90) AVERAGE WIND SPEED 13.5 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.6 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 100 11:00 PM LOWEST 86 2:00 PM AVERAGE 93 .......................................................... THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 58 64 2018 MINIMUM TEMPERATURE (F) 38 26 2013 SUNRISE AND SUNSET DECEMBER 12 2025......SUNRISE 7:17 AM PST SUNSET 4:49 PM PST DECEMBER 13 2025......SUNRISE 7:17 AM PST SUNSET 4:50 PM PST - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SETOR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$