Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS46 KMTR 180833
CLISTS
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
133 AM PDT MON AUG 18 2025
...................................
...THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR AUGUST 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 80 3:47 PM 98 2015 84 -4 76
MINIMUM 53 11:53 PM 44 2009 52 1 54
AVERAGE 67 68 -1 65
PRECIPITATION (IN)
YESTERDAY 0.00 0.03 2020 0.00 0.00 0.00
MONTH TO DATE T 0.01 -0.01 0.00
SINCE OCT 1 41.12 33.61 7.51 36.97
SINCE JAN 1 15.53 21.62 -6.09 25.41
DEGREE DAYS
HEATING
YESTERDAY 0 0
MONTH TO DATE 0 0
SINCE JUN 1 61 13
SINCE JUL 1 17 5
COOLING
YESTERDAY 2 0
MONTH TO DATE 90 96
SINCE JUN 1 173 426
SINCE JAN 1 210 455
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 6 RESULTANT WIND DIRECTION SE (150)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SE (140)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION SE (150)
AVERAGE WIND SPEED 6.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 7:00 AM
LOWEST 36 4:00 PM
AVERAGE 65
..........................................................
THE SANTA ROSA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 84 102 2020
MINIMUM TEMPERATURE (F) 52 45 2000
SUNRISE AND SUNSET
AUGUST 18 2025........SUNRISE 6:29 AM PDT SUNSET 8:01 PM PDT
AUGUST 19 2025........SUNRISE 6:30 AM PDT SUNSET 7:59 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$