AFOS product CLICPR
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CDUS45 KRIW 310731
CLICPR


CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY                                 
1228 AM MST THU DEC 31 2009


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

...THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 30 2009...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1939 TO 2009


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         27    257 PM  56    1980  32     -5       42       
  MINIMUM          4   1031 PM -29    1978  12     -8        9       
  AVERAGE         16                        22     -6       26      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          0.21 1977   0.02  -0.02     0.00    
  MONTH TO DATE    0.97                      0.60   0.37     0.38    
  SINCE DEC 1      0.97                      0.60   0.37     0.38    
  SINCE JAN 1     15.77                     13.01   2.76    11.90    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                       0.3   -0.3      0.0     
  MONTH TO DATE   19.5                      11.6    7.9     11.2     
  SINCE DEC 1     19.5                      11.6    7.9     11.2     
  SINCE JUL 1     35.2                      32.7    2.5     21.4     
  SNOW DEPTH       7                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       49                        42      7       39       
  MONTH TO DATE 1469                      1219    250     1019       
  SINCE DEC 1   1469                      1219    250     1019       
  SINCE JUL 1   3410                      3050    360     2731       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1    221                       428   -207      375       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    24   HIGHEST WIND DIRECTION    SW (210)      
  HIGHEST GUST SPEED    28   HIGHEST GUST DIRECTION    SW (220)      
  AVERAGE WIND SPEED     9.9                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.3                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    88          1100 PM                                     
 LOWEST     62           900 AM                                     
 AVERAGE    75                                                       

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

                                                                     
THE CASPER WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   32        54      1980                    
 MINIMUM TEMPERATURE (F)   12       -34      1978                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 31 2009......SUNRISE   737 AM MST   SUNSET   441 PM MST   
JANUARY  1 2010.......SUNRISE   737 AM MST   SUNSET   442 PM MST   

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




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