AFOS product CLICPR
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CDUS45 KRIW 210742
CLICPR


CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY                                 
137 AM MDT THU MAY 21 2009


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

...THE CASPER WY CLIMATE SUMMARY FOR MAY 20 2009...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1937 TO 2009


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         78    333 PM  89    1964  68     10       82       
                                      1954                          
  MINIMUM         48   1142 PM  24    2003  39      9       35       
  AVERAGE         63                        53     10       59      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        T             0.81 1975   0.08  -0.08     0.00    
  MONTH TO DATE    0.13                      1.56  -1.43     1.38    
  SINCE MAR 1      3.18                      3.98  -0.80     3.34    
  SINCE JAN 1      4.54                      5.20  -0.66     4.01    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0                       0.1   -0.1      0.0     
  MONTH TO DATE    T                         4.1   -4.1      5.3     
  SINCE MAR 1     34.0                      30.2    3.8     27.8     
  SINCE JUL 1     75.9                      85.0   -9.1     63.3     
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY        2                        11     -9        6       
  MONTH TO DATE  300                       290     10      327       
  SINCE MAR 1   2024                      1872    152     2089       
  SINCE JUL 1   6933                      7350   -417     7538       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    4                         0      4        0       
  SINCE MAR 1      4                         0      4        0       
  SINCE JAN 1      4                         0      4        0       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    29   HIGHEST WIND DIRECTION     N (360)      
  HIGHEST GUST SPEED    39   HIGHEST GUST DIRECTION    NW (320)      
  AVERAGE WIND SPEED    13.0                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.2                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT RAIN                                                         

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    66          1000 PM                                     
 LOWEST     17           500 PM                                     
 AVERAGE    42                                                       

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

                                                                     
THE CASPER WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   68        87      2006                    
                                             1964                    
 MINIMUM TEMPERATURE (F)   39        26      2001                    

                                                                     
SUNRISE AND SUNSET                                                   
MAY 21 2009...........SUNRISE   537 AM MDT   SUNSET   829 PM MDT   
MAY 22 2009...........SUNRISE   536 AM MDT   SUNSET   829 PM MDT   

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




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