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CDUS45 KMSO 200741
CLIBTM


CLIMATE REPORT
NATIONAL WEATHER SERVICE MISSOULA, MT                                
1241 AM MST WED DEC 20 2017


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

...THE BUTTE MT CLIMATE SUMMARY FOR DECEMBER 19 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1895 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         41    329 AM  52    2004  29     12       31       
  MINIMUM         31    652 AM -27    1945   4     27        5       
  AVERAGE         36                        17     19       18      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        T             0.60 1925   0.01  -0.01     0.00    
  MONTH TO DATE    0.13                      0.31  -0.18     0.34    
  SINCE OCT 1      1.04                      1.69  -0.65     3.12    
  SINCE JAN 1     11.57                     12.57  -1.00    10.50    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY       MM                                                 
  MONTH TO DATE   MM                                                 
  SINCE JAN 1     MM                                                 
  SINCE JUL 1     MM                                                 
  SNOW DEPTH      MM                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       29                        48    -19       47       
  MONTH TO DATE  798                       897    -99     1027       
  SINCE DEC 1    798                       897    -99     1027       
  SINCE JUL 1   3193                      3387   -194     3321       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1    129                        81     48       57       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    20   HIGHEST WIND DIRECTION     S (170)      
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION     W (260)      
  AVERAGE WIND SPEED     7.0                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.9                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  LIGHT SNOW                                                         

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    75           700 AM                                     
 LOWEST     52           700 PM                                     
 AVERAGE    64                                                       

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

                                                                     
THE BUTTE MT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   29        49      1958                    
 MINIMUM TEMPERATURE (F)    5       -36      1998                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 20 2017......SUNRISE   808 AM MST   SUNSET   447 PM MST   
DECEMBER 21 2017......SUNRISE   809 AM MST   SUNSET   448 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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