Climatological Report (Daily)
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852
CDUS46 KMTR 180026
CLISTS


CLIMATE REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
426 PM PST SUN DEC 17 2017


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

...THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR DECEMBER 17 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1998 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         69R   241 PM  67    1998  56     13       52
  MINIMUM         38    739 AM  24    2008  36      2       29
  AVERAGE         54                        46      8       41

PRECIPITATION (IN)
  TODAY            0.00          0.96 2010   0.25  -0.25     0.00
  MONTH TO DATE    0.04                      3.27  -3.23     5.90
  SINCE OCT 1      6.27                      9.99  -3.72    17.57
  SINCE JAN 1     48.25                     32.52  15.73    41.13

DEGREE DAYS
 HEATING
  TODAY           11                                        24
  MONTH TO DATE  288                                       287
  SINCE DEC 1    288                                       287
  SINCE JUL 1    737                                       780

 COOLING
  TODAY            0                                         0
  MONTH TO DATE    0                                         0
  SINCE DEC 1      0                                         0
  SINCE JAN 1    635                                       356
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED   0   RESULTANT WIND DIRECTION   W (250)
  HIGHEST WIND SPEED    16   HIGHEST WIND DIRECTION    NW (330)
  HIGHEST GUST SPEED    20   HIGHEST GUST DIRECTION     N (350)
  AVERAGE WIND SPEED     4.5


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.1


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED TODAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    79           800 AM
 LOWEST     27           300 PM
 AVERAGE    53

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


THE SANTA ROSA AIRPORT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   56        64      1998
 MINIMUM TEMPERATURE (F)   36        24      2008


SUNRISE AND SUNSET
DECEMBER 17 2017......SUNRISE   723 AM PST   SUNSET   452 PM PST
DECEMBER 18 2017......SUNRISE   724 AM PST   SUNSET   453 PM PST


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




$$




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