Climatological Report (Daily)
Issued by NWS
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CDUS46 KMTR 180833
CLISTS
CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
133 AM PDT FRI SEP 18 2026
...................................
...THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 17 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 76 2:13 PM 98 2000 83 -7 97
MINIMUM 49 3:33 AM 44 2008 50 -1 50
2018
AVERAGE 63 66 -3 74
PRECIPITATION (IN)
YESTERDAY 0.00 0.03 2022 0.01 -0.01 0.00
MONTH TO DATE 0.24 0.04 0.20 0.12
SINCE OCT 1 26.54 33.69 -7.15 41.24
SINCE JAN 1 13.65 21.70 -8.05 15.65
DEGREE DAYS
HEATING
YESTERDAY 2 0
MONTH TO DATE 11 0
SINCE SEP 1 11 0
SINCE JUL 1 24 17
COOLING
YESTERDAY 0 9
MONTH TO DATE 49 66
SINCE SEP 1 49 66
SINCE JAN 1 390 345
...................................................................
WIND (MPH)
RESULTANT WIND SPEED 2 RESULTANT WIND DIRECTION S (200)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 4.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 2:00 AM
LOWEST 45 2:00 PM
AVERAGE 73
..........................................................
THE SANTA ROSA AIRPORT CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 83 101 2000
MINIMUM TEMPERATURE (F) 49 41 2008
SUNRISE AND SUNSET
SEPTEMBER 18 2026.....SUNRISE 6:56 AM PDT SUNSET 7:14 PM PDT
SEPTEMBER 19 2026.....SUNRISE 6:56 AM PDT SUNSET 7:13 PM PDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$