Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 190045
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
545 PM PDT SAT JUL 18 2026
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR JULY 18 2026...
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 74 3:59 PM 95 1998 79 -5 74
MINIMUM 55 12:09 AM 50 2009 55 0 54
2012
AVERAGE 65 67 -2 64
PRECIPITATION (IN)
TODAY 0.00 0.00
MONTH TO DATE T 0.00
SINCE OCT 1 17.03 16.08
SINCE JAN 1 9.60 8.10
DEGREE DAYS
HEATING
TODAY 0 1
MONTH TO DATE 20 27
SINCE JUN 1 41 91
SINCE JUL 1 20 27
COOLING
TODAY 0 0
MONTH TO DATE 35 8
SINCE JUN 1 74 16
SINCE JAN 1 91 33
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION SW (240)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 9.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 6:00 AM
LOWEST 59 3:00 PM
AVERAGE 75
..........................................................
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 2026..........SUNRISE 6:00 AM PDT SUNSET 8:30 PM PDT
JULY 19 2026..........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.
$$