AFOS product CLICPR
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CLICPR


CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY                                 
1249 AM MST WED DEC 21 2011


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

...THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 20 2011...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1939 TO 2011


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         35        MM  56    1941  34      1       40        
  MINIMUM         15        MM -36    1990  13      2       29        
  AVERAGE         25                        23      2       35      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          0.15 1968   0.02  -0.02     0.01    
  MONTH TO DATE    0.13                      0.32  -0.19     0.64    
  SINCE DEC 1      0.13                      0.32  -0.19     0.64    
  SINCE JAN 1     12.71                     12.35   0.36    11.89    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                       0.4   -0.4      0.0     
  MONTH TO DATE    3.8                       7.2   -3.4      8.3     
  SINCE DEC 1      3.8                       7.2   -3.4      8.3     
  SINCE JUL 1     19.1                      26.7   -7.6     17.1     
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       40                        42     -2       30       
  MONTH TO DATE  850                       821     29      739       
  SINCE DEC 1    850                       821     29      739       
  SINCE JUL 1   2487                      2675   -188     2408       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1    519                       422     97      423       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    30   HIGHEST WIND DIRECTION    SW (220)      
  HIGHEST GUST SPEED    43   HIGHEST GUST DIRECTION    SW (210)      
  AVERAGE WIND SPEED    19.4                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.0                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    84          1200 AM                                     
 LOWEST     47           300 PM                                     
 AVERAGE    66                                                       

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

                                                                     
THE CASPER WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   34        53      1969                    
 MINIMUM TEMPERATURE (F)   13       -41      1990                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 21 2011......SUNRISE   733 AM MST   SUNSET   434 PM MST   
DECEMBER 22 2011......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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