Climatological Report (Daily)
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494
CDUS46 KMTR 300829
CLISTS

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
129 AM PDT SAT AUG 30 2025

...................................

...THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR AUGUST 29 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         86   1:51 PM 101    2009  85      1       79
  MINIMUM         50   3:14 AM  45    2005  51     -1       54
  AVERAGE         68                        68      0       67

PRECIPITATION (IN)
  YESTERDAY        0.00          0.03 2015   0.00   0.00     0.00
  MONTH TO DATE    T                         0.04  -0.04     0.08
  SINCE OCT 1     41.12                     33.64   7.48    37.05
  SINCE JAN 1     15.53                     21.65  -6.12    25.49

DEGREE DAYS
 HEATING
  YESTERDAY        0                                         0
  MONTH TO DATE    0                                         4
  SINCE JUN 1     61                                        17
  SINCE JUL 1     17                                         9

 COOLING
  YESTERDAY        3                                         2
  MONTH TO DATE  141                                       141
  SINCE JUN 1    224                                       471
  SINCE JAN 1    261                                       500
...................................................................


WIND (MPH)
  RESULTANT WIND SPEED   4   RESULTANT WIND DIRECTION   S (160)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     S (180)
  HIGHEST GUST SPEED    18   HIGHEST GUST DIRECTION     S (180)
  AVERAGE WIND SPEED     4.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.3


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  FOG W/VISIBILITY <= 1/4 MILE
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           4:00 AM
 LOWEST     36           1:00 PM
 AVERAGE    68

..........................................................


THE SANTA ROSA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   85        98      2023
 MINIMUM TEMPERATURE (F)   51        42      2010


SUNRISE AND SUNSET
AUGUST 30 2025........SUNRISE   6:39 AM PDT   SUNSET   7:44 PM PDT
AUGUST 31 2025........SUNRISE   6:40 AM PDT   SUNSET   7:42 PM PDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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