


Climatological Report (Daily)
Issued by NWS
Issued by NWS
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950 CDUS46 KMTR 060827 CLIAPC CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 127 AM PDT WED AUG 06 2025 ................................... ...THE NAPA AIRPORT CLIMATE SUMMARY FOR AUGUST 5 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 76 3:31 PM 86 2005 79 -3 74 MINIMUM 50 6:52 AM 46 2002 55 -5 57 AVERAGE 63 67 -4 66 PRECIPITATION (IN) YESTERDAY 0.00 0.00 MONTH TO DATE 0.00 0.00 SINCE OCT 1 16.08 19.88 SINCE JAN 1 8.10 13.84 DEGREE DAYS HEATING YESTERDAY 2 0 MONTH TO DATE 5 0 SINCE JUN 1 107 42 SINCE JUL 1 43 5 COOLING YESTERDAY 0 1 MONTH TO DATE 2 16 SINCE JUN 1 22 230 SINCE JAN 1 39 240 ................................................................... WIND (MPH) RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION SW (210) HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION S (200) HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION S (200) AVERAGE WIND SPEED 9.1 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.1 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 89 5:00 AM LOWEST 53 2:00 PM AVERAGE 71 .......................................................... THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 79 91 2023 MINIMUM TEMPERATURE (F) 55 44 2002 SUNRISE AND SUNSET AUGUST 6 2025........SUNRISE 6:16 AM PDT SUNSET 8:13 PM PDT AUGUST 7 2025........SUNRISE 6:17 AM PDT SUNSET 8:12 PM PDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$