Climatological Report (Daily)
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381
CDUS46 KMTR 200831
CLISTS

CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
131 AM PDT THU AUG 20 2026

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

...THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR AUGUST 19 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         86   2:37 PM  97    2020  84      2       88
  MINIMUM         55  11:59 PM  46    2025  52      3       46
  AVERAGE         71                        68      3       67

PRECIPITATION (IN)
  YESTERDAY        0.00          T    2012   0.00   0.00     0.00
                                      2023
  MONTH TO DATE    T                         0.01  -0.01      T
  SINCE OCT 1     26.30                     33.61  -7.31    41.12
  SINCE JAN 1     13.41                     21.62  -8.21    15.53

DEGREE DAYS
 HEATING
  YESTERDAY        0                                         0
  MONTH TO DATE    0                                         0
  SINCE JUN 1     28                                        61
  SINCE JUL 1      8                                        17

 COOLING
  YESTERDAY        6                                         2
  MONTH TO DATE   78                                        93
  SINCE JUN 1    261                                       176
  SINCE JAN 1    300                                       213
...................................................................


WIND (MPH)
  RESULTANT WIND SPEED   5   RESULTANT WIND DIRECTION   S (160)
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION     S (180)
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION     S (180)
  AVERAGE WIND SPEED     6.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.5


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97           4:00 AM
 LOWEST     40           3:00 PM
 AVERAGE    69

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


THE SANTA ROSA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   85        97      2025
 MINIMUM TEMPERATURE (F)   52        47      2000


SUNRISE AND SUNSET
AUGUST 20 2026........SUNRISE   6:30 AM PDT   SUNSET   7:58 PM PDT
AUGUST 21 2026........SUNRISE   6:31 AM PDT   SUNSET   7:57 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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