Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 170829
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
129 AM PDT SAT MAY 17 2025
...................................
...THE NAPA AIRPORT CLIMATE SUMMARY FOR MAY 16 2025...
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)
YESTERDAY
MAXIMUM 77 1:44 PM 95 2009 73 4 69
MINIMUM 46 5:16 AM 37 1999 48 -2 53
AVERAGE 62 60 2 61
PRECIPITATION (IN)
YESTERDAY 0.00 T
MONTH TO DATE 0.20 0.69
SINCE OCT 1 16.08 19.88
SINCE JAN 1 8.10 13.84
DEGREE DAYS
HEATING
YESTERDAY 3 4
MONTH TO DATE 83 96
SINCE MAR 1 749 727
SINCE JUL 1 2604 2375
COOLING
YESTERDAY 0 0
MONTH TO DATE 6 5
SINCE MAR 1 8 5
SINCE JAN 1 8 5
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 8 RESULTANT WIND DIRECTION SW (210)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 8.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 5:00 AM
LOWEST 49 5:00 PM
AVERAGE 70
..........................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 95 2009
MINIMUM TEMPERATURE (F) 48 41 1999
2018
SUNRISE AND SUNSET
MAY 17 2025...........SUNRISE 5:56 AM PDT SUNSET 8:15 PM PDT
MAY 18 2025...........SUNRISE 5:55 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.
$$