AFOS product CLICPR
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CDUS45 KRIW 210746
CLICPR


CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY                                 
1246 AM MST TUE DEC 21 2010


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

...THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 20 2010...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1939 TO 2010


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         40    200 AM  56    1941  33      7       43       
  MINIMUM         29    951 PM -36    1990  13     16       29       
  AVERAGE         35                        23     12       36      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.01          0.15 1968   0.02  -0.01     0.00    
  MONTH TO DATE    0.64                      0.40   0.24     0.30    
  SINCE DEC 1      0.64                      0.40   0.24     0.30    
  SINCE JAN 1     11.89                     12.81  -0.92    15.10    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY       MM                         0.4   MM        0.0     
  MONTH TO DATE    8.3                       8.0    0.3      6.8     
  SINCE DEC 1      8.3                       8.0    0.3      6.8     
  SINCE JUL 1     17.1                      29.1  -12.0     22.5     
  SNOW DEPTH       3                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       30                        42    -12       29       
  MONTH TO DATE  739                       799    -60      975       
  SINCE DEC 1    739                       799    -60      975       
  SINCE JUL 1   2408                      2630   -222     2916       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1    423                       428     -5      221       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    30   HIGHEST WIND DIRECTION    SW (210)      
  HIGHEST GUST SPEED    38   HIGHEST GUST DIRECTION    SW (210)      
  AVERAGE WIND SPEED    14.2                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.6                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    85          1200 AM                                     
 LOWEST     56          1200 PM                                     
 AVERAGE    71                                                       

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

                                                                     
THE CASPER WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   33        53      1969                    
 MINIMUM TEMPERATURE (F)   13       -41      1990                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 21 2010......SUNRISE   734 AM MST   SUNSET   434 PM MST   
DECEMBER 22 2010......SUNRISE   734 AM MST   SUNSET   435 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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