Climatological Report (Daily)
Issued by NWS

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993
CDUS46 KMTR 220030
CLIAPC

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
530 PM PDT TUE JUL 21 2026

...................................

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR JULY 21 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         89   4:17 PM  94    2012  78     11       75
  MINIMUM         62   6:03 AM  48    2001  55      7       56
  AVERAGE         76                        67      9       66

PRECIPITATION (IN)
  TODAY            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
  TODAY            0                                         0
  MONTH TO DATE   23                                        31
  SINCE JUN 1     44                                        95
  SINCE JUL 1     23                                        31

 COOLING
  TODAY           11                                         1
  MONTH TO DATE   50                                         9
  SINCE JUN 1     89                                        17
  SINCE JAN 1    106                                        34
...................................................................


WIND (MPH)
  RESULTANT WIND SPEED   7   RESULTANT WIND DIRECTION   S (190)
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION     S (180)
  AVERAGE WIND SPEED     7.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.0


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    87           2:00 AM
 LOWEST     21           3:00 PM
 AVERAGE    54

..........................................................


THE NAPA AIRPORT  CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   78       106      2006
 MINIMUM TEMPERATURE (F)   55        44      2016


SUNRISE AND SUNSET
JULY 21 2026..........SUNRISE   6:03 AM PDT   SUNSET   8:28 PM PDT
JULY 22 2026..........SUNRISE   6:04 AM PDT   SUNSET   8:27 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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