073
CDUS46 KMTR 190029
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
529 PM PDT FRI JUL 18 2025
...............................
..THE NAPA AIRPORT CLIMATE SUMMARY FOR JULY 18 2025
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 74 4:17 PM 95 1998 79 -5 82
MINIMUM 54 8:06 AM 50 2009 55 -1 52
2012
AVERAGE 64 67 -3 67
PRECIPITATION (IN)
TODAY 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
TODAY 1 0
MONTH TO DATE 27 0
SINCE JUN 1 91 37
SINCE JUL 1 27 0
COOLING
TODAY 0 2
MONTH TO DATE 8 103
SINCE JUN 1 16 159
SINCE JAN 1 33 169
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION SW (240)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION S (200)
AVERAGE WIND SPEED 10.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 12:00 AM
LOWEST 55 3:00 PM
AVERAGE 74
......................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 97 2024
MINIMUM TEMPERATURE (F) 55 47 2000
SUNRISE AND SUNSET
JULY 18 2025..........SUNRISE 6:01 AM PDT SUNSET 8:30 PM PDT
JULY 19 2025..........SUNRISE 6:01 AM PDT SUNSET 8:29 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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