716
CDUS46 KMTR 180830
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
130 AM PDT SUN MAY 18 2025
...............................
..THE NAPA AIRPORT CLIMATE SUMMARY FOR MAY 17 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 71 1:37 PM 95 2009 73 -2 68
MINIMUM 49 11:59 PM 41 1999 48 1 51
2018
AVERAGE 60 61 -1 60
PRECIPITATION (IN)
YESTERDAY 0.00 0.00
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 5 5
MONTH TO DATE 88 101
SINCE MAR 1 754 732
SINCE JUL 1 2609 2380
COOLING
YESTERDAY 0 0
MONTH TO DATE 6 5
SINCE MAR 1 8 5
SINCE JAN 1 8 5
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 14 RESULTANT WIND DIRECTION W (250)
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION W (270)
AVERAGE WIND SPEED 14.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 86 12:00 AM
LOWEST 49 1:00 PM
AVERAGE 68
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THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 73 91 2022
MINIMUM TEMPERATURE (F) 48 39 2013
SUNRISE AND SUNSET
MAY 18 2025...........SUNRISE 5:55 AM PDT SUNSET 8:16 PM PDT
MAY 19 2025...........SUNRISE 5:55 AM PDT SUNSET 8:17 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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