946
CDUS46 KMTR 180838
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1238 AM PST MON DEC 18 2023
...............................
..THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 17 2023
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2023
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 58 5:30 PM 66 2000 57 1 59
2017
MINIMUM 44 1:21 AM 24 2008 37 7 30
AVERAGE 51 47 4 45
PRECIPITATION (IN)
YESTERDAY 0.16 0.00
MONTH TO DATE 0.81 2.87
SINCE OCT 1 2.52 3.84
SINCE JAN 1 23.73 7.30
DEGREE DAYS
HEATING
YESTERDAY 14 20
MONTH TO DATE 247 313
SINCE DEC 1 247 313
SINCE JUL 1 653 913
COOLING
YESTERDAY 0 0
MONTH TO DATE 0 0
SINCE DEC 1 0 0
SINCE JAN 1 389 487
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 5 RESULTANT WIND DIRECTION E (80)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NE (60)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NE (40)
AVERAGE WIND SPEED 6.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 1:00 PM
LOWEST 46 2:00 AM
AVERAGE 63
......................................................
THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 57 63 2017
MINIMUM TEMPERATURE (F) 37 21 2006
SUNRISE AND SUNSET
DECEMBER 18 2023......SUNRISE 7:20 AM PST SUNSET 4:51 PM PST
DECEMBER 19 2023......SUNRISE 7:21 AM PST SUNSET 4:51 PM PST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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