Climatological Report (Daily)
Issued by NWS
Issued by NWS
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798
CDUS46 KMTR 310831
CLISTS
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
131 AM PDT FRI JUL 31 2026
...................................
...THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR JULY 30 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 91 2:51 PM 95 2012 83 8 82
MINIMUM 50 3:47 AM 46 1999 52 -2 52
AVERAGE 71 68 3 67
PRECIPITATION (IN)
YESTERDAY 0.00 T 2020 0.00 0.00 0.00
MONTH TO DATE T 0.01 -0.01 0.01
SINCE OCT 1 26.30 33.60 -7.30 41.12
SINCE JAN 1 13.41 21.61 -8.20 15.53
DEGREE DAYS
HEATING
YESTERDAY 0 0
MONTH TO DATE 8 17
SINCE JUN 1 28 61
SINCE JUL 1 8 17
COOLING
YESTERDAY 6 2
MONTH TO DATE 112 39
SINCE JUN 1 176 79
SINCE JAN 1 215 116
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION S (160)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SE (150)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION SE (140)
AVERAGE WIND SPEED 4.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 3:00 AM
LOWEST 26 3:00 PM
AVERAGE 62
..........................................................
THE SANTA ROSA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 83 100 2000
MINIMUM TEMPERATURE (F) 52 48 1999
SUNRISE AND SUNSET
JULY 31 2026..........SUNRISE 6:12 AM PDT SUNSET 8:22 PM PDT
AUGUST 1 2026........SUNRISE 6:13 AM PDT SUNSET 8:21 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$