Climatological Report (Daily)
Issued by NWS

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642
CDUS46 KMTR 120031
CLIAPC

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
531 PM PDT MON MAY 11 2026

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

...THE NAPA AIRPORT  CLIMATE SUMMARY FOR MAY 11 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         79   4:07 PM  84    2018  72      7       69
  MINIMUM         54   5:03 AM  32    2022  47      7       49
  AVERAGE         67                        60      7       59

PRECIPITATION (IN)
  TODAY            0.00                                      0.00
  MONTH TO DATE    0.37                                       T
  SINCE OCT 1     16.76                                     15.88
  SINCE JAN 1      9.33                                      7.90

DEGREE DAYS
 HEATING
  TODAY            0                                         6
  MONTH TO DATE   51                                        55
  SINCE MAR 1    458                                       721
  SINCE JUL 1   2256                                      2576

 COOLING
  TODAY            2                                         0
  MONTH TO DATE    2                                         6
  SINCE MAR 1     10                                         8
  SINCE JAN 1     10                                         8
...................................................................


WIND (MPH)
  RESULTANT WIND SPEED   4   RESULTANT WIND DIRECTION   S (200)
  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     S (200)
  HIGHEST GUST SPEED    16   HIGHEST GUST DIRECTION     S (190)
  AVERAGE WIND SPEED     4.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97          12:00 AM
 LOWEST     54           3:00 PM
 AVERAGE    76

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


THE NAPA AIRPORT  CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   72        84      2014
 MINIMUM TEMPERATURE (F)   47        37      2009


SUNRISE AND SUNSET
MAY 11 2026...........SUNRISE   6:02 AM PDT   SUNSET   8:10 PM PDT
MAY 12 2026...........SUNRISE   6:01 AM PDT   SUNSET   8:11 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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