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104 
CDUS45 KMSO 190837
CLIBTM

CLIMATE REPORT 
NATIONAL WEATHER SERVICE MISSOULA MT
137 AM MST SAT DEC 19 2020

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

...THE BUTTE MT CLIMATE SUMMARY FOR DECEMBER 18 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         35   1053 PM  55    1979  29      6       29       
  MINIMUM         25    232 AM -32    1924   4     21        6       
  AVERAGE         30                        17     13       18     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          0.24 1925   0.02  -0.02     0.00     
  MONTH TO DATE    0.06                      0.30  -0.24      T       
  SINCE JAN 1     10.16                     12.56  -2.40    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       35                        48    -13       47        
  MONTH TO DATE  735                       849   -114      776        
  SINCE DEC 1    735                       849   -114      776        
  SINCE JUL 1   3082                      3339   -257     3367        

 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    16   HIGHEST WIND DIRECTION    SW (240)       
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION    SW (230)       
  AVERAGE WIND SPEED     4.6                                        


SKY COVER                                                             
  POSSIBLE SUNSHINE  MM                                                 
  AVERAGE SKY COVER 0.9                                                 


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    77           400 AM                                      
 LOWEST     52          1200 PM                                      
 AVERAGE    65                                                        

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


THE BUTTE MT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   29        52      2004                      
 MINIMUM TEMPERATURE (F)    4       -27      1945                      


SUNRISE AND SUNSET                                                    
DECEMBER 19 2020......SUNRISE   808 AM MST   SUNSET   447 PM MST     
DECEMBER 20 2020......SUNRISE   809 AM MST   SUNSET   447 PM MST     


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




$$