099
CDUS46 KMTR 170834
CLISTS
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1234 AM PST WED DEC 17 2025
...............................
..THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR DECEMBER 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 57 5:02 PM 70 2011 57 0 50
MINIMUM 39 12:41 AM 26 2022 37 2 41
AVERAGE 48 47 1 46
PRECIPITATION (IN)
YESTERDAY 0.04 1.28 2002 0.22 -0.18 1.24
MONTH TO DATE 0.04 3.36 -3.32 5.54
SINCE OCT 1 6.88 8.59 -1.71 21.45
SINCE JAN 1 22.78 30.38 -7.60 46.94
DEGREE DAYS
HEATING
YESTERDAY 17 19
MONTH TO DATE 302 235
SINCE DEC 1 302 235
SINCE JUL 1 747 743
COOLING
YESTERDAY 0 0
MONTH TO DATE 0 0
SINCE DEC 1 0 0
SINCE JAN 1 401 705
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WIND (MPH)
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION S (200)
HIGHEST WIND SPEED 7 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 10 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 2.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 12:00 AM
LOWEST 77 3:00 PM
AVERAGE 89
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THE SANTA ROSA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 57 69 2017
MINIMUM TEMPERATURE (F) 37 24 2008
SUNRISE AND SUNSET
DECEMBER 17 2025......SUNRISE 7:23 AM PST SUNSET 4:52 PM PST
DECEMBER 18 2025......SUNRISE 7:24 AM PST SUNSET 4:53 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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