


Climatological Report (Daily)
Issued by NWS
Issued by NWS
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223 CDUS46 KMTR 090826 CLIAPC CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 126 AM PDT THU OCT 09 2025 ................................... ...THE NAPA AIRPORT CLIMATE SUMMARY FOR OCTOBER 8 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 70 3:29 PM 91 2016 78 -8 83 MINIMUM 53 11:59 PM 40 2010 47 6 56 AVERAGE 62 62 0 70 PRECIPITATION (IN) YESTERDAY 0.00 0.00 MONTH TO DATE 0.08 0.00 SINCE OCT 1 0.08 0.00 SINCE JAN 1 8.40 13.84 DEGREE DAYS HEATING YESTERDAY 3 0 MONTH TO DATE 8 0 SINCE SEP 1 10 26 SINCE JUL 1 55 39 COOLING YESTERDAY 0 5 MONTH TO DATE 9 77 SINCE SEP 1 99 135 SINCE JAN 1 210 436 ................................................................... WIND (MPH) RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION W (260) HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (210) HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SW (210) AVERAGE WIND SPEED 6.8 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.5 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 100 1:00 AM LOWEST 68 4:00 PM AVERAGE 84 .......................................................... THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 77 89 2015 MINIMUM TEMPERATURE (F) 47 37 2008 SUNRISE AND SUNSET OCTOBER 9 2025.......SUNRISE 7:13 AM PDT SUNSET 6:39 PM PDT OCTOBER 10 2025.......SUNRISE 7:14 AM PDT SUNSET 6:38 PM PDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$