286  
CDUS46 KMTR 150826  
CLISTS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
1226 AM PST FRI DEC 15 2017  
 
   
...............................
 
 
   
..THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR DECEMBER 14 2017
 
 
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)  
YESTERDAY  
MAXIMUM 66R 258 PM 64 2013 56 10 58  
MINIMUM 30 805 AM 25 2008 36 -6 50  
AVERAGE 48 46 2 54  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.24 2002 0.23 -0.23 0.86  
MONTH TO DATE 0.04 2.54 -2.50 3.33  
SINCE OCT 1 6.27 9.26 -2.99 15.00  
SINCE JAN 1 48.25 31.79 16.46 38.56  
 
DEGREE DAYS  
HEATING  
YESTERDAY 17 11  
MONTH TO DATE 245 233  
SINCE DEC 1 245 233  
SINCE JUL 1 694 726  
 
COOLING  
YESTERDAY 0 0  
MONTH TO DATE 0 0  
SINCE DEC 1 0 0  
SINCE JAN 1 635 356    
..............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 1 RESULTANT WIND DIRECTION SW (210)  
HIGHEST WIND SPEED 7 HIGHEST WIND DIRECTION N (350)  
HIGHEST GUST SPEED 10 HIGHEST GUST DIRECTION SE (150)  
AVERAGE WIND SPEED 1.8  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1200 AM  
LOWEST 42 300 PM  
AVERAGE 71  
   
......................................................
 
 
 
THE SANTA ROSA AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 56 78 2013  
MINIMUM TEMPERATURE (F) 36 28 1999  
 
 
SUNRISE AND SUNSET  
DECEMBER 15 2017......SUNRISE 722 AM PST SUNSET 451 PM PST  
DECEMBER 16 2017......SUNRISE 722 AM PST SUNSET 452 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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