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CLIBTM


CLIMATE REPORT
NATIONAL WEATHER SERVICE MISSOULA, MT                                
138 AM MDT MON MAY 21 2012


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

...THE BUTTE MT CLIMATE SUMMARY FOR MAY 20 2012...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1895 TO 2012


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         69    518 PM  83    1919  62      7       49       
  MINIMUM         28    544 AM  23    2003  35     -7       43       
  AVERAGE         49                        49      0       46      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.20 1902   0.07  -0.07     0.01    
  MONTH TO DATE    0.29                      1.15  -0.86     0.79    
  SINCE OCT 1      4.25                      5.87  -1.62     4.79    
  SINCE JAN 1      2.99                      3.98  -0.99     2.99    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY       MM                                                 
  MONTH TO DATE   MM                                                 
  SINCE JAN 1     MM                                                 
  SINCE JUL 1     MM                                                 
  SNOW DEPTH      MM                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       16                        16      0       19       
  MONTH TO DATE  377                       380     -3      421       
  SINCE MAR 1   1948                      2202   -254     2381       
  SINCE JUL 1   8088                      8771   -683     9053       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE MAR 1      0                         0      0        0       
  SINCE JAN 1      0                         0      0        0       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION    SW (210)      
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION     W (270)      
  AVERAGE WIND SPEED     4.6                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.4                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    78           300 AM                                     
 LOWEST     22           200 PM                                     
 AVERAGE    50                                                       

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

                                                                     
THE BUTTE MT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   63        84      1919                    
 MINIMUM TEMPERATURE (F)   36        12      1938                    

                                                                     
SUNRISE AND SUNSET                                                   
MAY 21 2012...........SUNRISE   551 AM MDT   SUNSET   903 PM MDT   
MAY 22 2012...........SUNRISE   550 AM MDT   SUNSET   904 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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