Climatological Report (Daily)
Issued by NWS
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CDUS46 KMTR 270842
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
142 AM PDT MON JUL 27 2026
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR JULY 26 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 82 4:51 PM 93 2008 78 4 74
MINIMUM 51 6:08 AM 48 2016 55 -4 57
AVERAGE 67 67 0 66
PRECIPITATION (IN)
YESTERDAY 0.00 T
MONTH TO DATE T T
SINCE OCT 1 17.03 16.08
SINCE JAN 1 9.60 8.10
DEGREE DAYS
HEATING
YESTERDAY 0 0
MONTH TO DATE 23 34
SINCE JUN 1 44 98
SINCE JUL 1 23 34
COOLING
YESTERDAY 2 1
MONTH TO DATE 66 10
SINCE JUN 1 105 18
SINCE JAN 1 122 35
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION SW (220)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 9.8
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 97 6:00 AM
LOWEST 40 3:00 PM
AVERAGE 69
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 89 2015
2021
MINIMUM TEMPERATURE (F) 55 49 2000
2015
SUNRISE AND SUNSET
JULY 27 2026..........SUNRISE 6:08 AM PDT SUNSET 8:23 PM PDT
JULY 28 2026..........SUNRISE 6:08 AM PDT SUNSET 8:22 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$