023
CDUS46 KMTR 190835
CLIAPC
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1235 AM PST TUE DEC 19 2023
...............................
..THE NAPA AIRPORT CLIMATE SUMMARY FOR DECEMBER 18 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 61 11:45 PM 63 2017 57 4 53
MINIMUM 50 4:02 AM 21 2006 37 13 28
AVERAGE 56 47 9 41
PRECIPITATION (IN)
YESTERDAY 1.31 0.00
MONTH TO DATE 2.12 2.87
SINCE OCT 1 3.83 3.84
SINCE JAN 1 25.04 7.30
DEGREE DAYS
HEATING
YESTERDAY 9 24
MONTH TO DATE 256 337
SINCE DEC 1 256 337
SINCE JUL 1 662 937
COOLING
YESTERDAY 0 0
MONTH TO DATE 0 0
SINCE DEC 1 0 0
SINCE JAN 1 389 487
...............................................................
WIND (MPH)
RESULTANT WIND SPEED 12 RESULTANT WIND DIRECTION E (100)
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 13.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 5:00 PM
LOWEST 80 8:00 AM
AVERAGE 87
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THE NAPA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 57 78 1999
MINIMUM TEMPERATURE (F) 37 21 2006
SUNRISE AND SUNSET
DECEMBER 19 2023......SUNRISE 7:21 AM PST SUNSET 4:51 PM PST
DECEMBER 20 2023......SUNRISE 7:21 AM PST SUNSET 4:52 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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