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CDUS45 KMSO 210838
CLIBTM

CLIMATE REPORT 
NATIONAL WEATHER SERVICE MISSOULA MT
138 AM MST MON DEC 21 2020

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

...THE BUTTE MT CLIMATE SUMMARY FOR DECEMBER 20 2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1895 TO 2020


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 YESTERDAY                                                           
  MAXIMUM         44    212 PM  49    1958  29     15       44       
  MINIMUM         33   1106 PM -36    1998   5     28       24       
  AVERAGE         39                        17     22       34     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          0.25 1941   0.02  -0.02     0.00     
  MONTH TO DATE    0.06                      0.33  -0.27      T       
  SINCE JAN 1     10.16                     12.59  -2.43    12.57     

SNOWFALL (IN)                                                              
  YESTERDAY       MM                                                  
  MONTH TO DATE   MM                                                  
  SINCE DEC 1     MM                                                  
  SINCE JUL 1     MM                                                  
  SNOW DEPTH      MM                                                  

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY       26                        48    -22       31        
  MONTH TO DATE  790                       945   -155      846        
  SINCE DEC 1    790                       945   -155      846        
  SINCE JUL 1   3137                      3435   -298     3437        

 COOLING                                                              
  YESTERDAY        0                         0      0        0        
  MONTH TO DATE    0                         0      0        0        
  SINCE DEC 1      0                         0      0        0        
  SINCE JAN 1     87                        81      6       84        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION    SW (240)       
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION     W (250)       
  AVERAGE WIND SPEED     9.7                                        


SKY COVER                                                             
  POSSIBLE SUNSHINE  MM                                                 
  AVERAGE SKY COVER 0.7                                                 


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    72          1100 PM                                      
 LOWEST     44          1200 AM                                      
 AVERAGE    58                                                        

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


THE BUTTE MT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   29        50      1940                      
 MINIMUM TEMPERATURE (F)    5       -43      1983                      


SUNRISE AND SUNSET                                                    
DECEMBER 21 2020......SUNRISE   809 AM MST   SUNSET   448 PM MST     
DECEMBER 22 2020......SUNRISE   810 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.




$$