873
CDUS46 KMTR 180027
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
527 PM PDT SUN MAY 17 2026
...............................
..THE NAPA AIRPORT CLIMATE SUMMARY FOR MAY 17 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 76 4:56 PM 95 2009 73 3 71
MINIMUM 45 6:37 AM 41 1999 48 -3 49
2018
AVERAGE 61 61 0 60
PRECIPITATION (IN)
TODAY 0.00 0.00
MONTH TO DATE 0.37 0.20
SINCE OCT 1 16.76 16.08
SINCE JAN 1 9.33 8.10
DEGREE DAYS
HEATING
TODAY 4 5
MONTH TO DATE 72 88
SINCE MAR 1 479 754
SINCE JUL 1 2277 2609
COOLING
TODAY 0 0
MONTH TO DATE 2 6
SINCE MAR 1 10 8
SINCE JAN 1 10 8
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 3 RESULTANT WIND DIRECTION NW (320)
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 42 HIGHEST GUST DIRECTION N (360)
AVERAGE WIND SPEED 8.5
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 86 6:00 AM
LOWEST 15 1:00 PM
AVERAGE 51
......................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 91 2022
MINIMUM TEMPERATURE (F) 48 39 2013
SUNRISE AND SUNSET
MAY 17 2026...........SUNRISE 5:56 AM PDT SUNSET 8:15 PM PDT
MAY 18 2026...........SUNRISE 5:56 AM PDT SUNSET 8:16 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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