Weather Service Report


691 
CDUS45 KBYZ 211740
CLIBIL

CLIMATE REPORT 
NATIONAL WEATHER SERVICE BILLINGS MT
1140 AM MDT MON SEP 21 2020

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

...THE BILLINGS MT CLIMATE SUMMARY FOR SEPTEMBER 21 2020...
VALID AS OF 1100 AM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1934 TO 2020


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 TODAY                                                               
  MAXIMUM         61    959 AM  91    1938  70     -9       62       
  MINIMUM         45    634 AM  28    1995  46     -1       46       
  AVERAGE         53                        58     -5       54     

PRECIPITATION (IN)                                                    
  TODAY            0.00          0.67 1991   0.05  -0.05     0.51     
  MONTH TO DATE    0.54                      0.88  -0.34     2.47     
  SINCE OCT 1     12.22                     13.24  -1.02    18.24     
  SINCE JAN 1     10.28                     10.93  -0.65    16.39     

SNOWFALL (IN)                                                              
  TODAY           MM             0.5  2000   0.1   MM        0.0      
  MONTH TO DATE    0.0                       0.5   -0.5      0.0      
  SINCE SEP 1      0.0                       0.5   -0.5      0.0      
  SINCE JUL 1      0.0                       0.5   -0.5       T       
  SNOW DEPTH      MM                                                  

DEGREE DAYS                                                           
 HEATING                                                              
  TODAY           12                         8      4       11        
  MONTH TO DATE   91                       103    -12       70        
  SINCE SEP 1     91                       103    -12       70        
  SINCE JUL 1    104                       135    -31       85        

 COOLING                                                              
  TODAY            0                         1     -1        0        
  MONTH TO DATE   57                        45     12       92        
  SINCE SEP 1     57                        45     12       92        
  SINCE JAN 1    737                       627    110      682        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION    SW (220)       
  HIGHEST GUST SPEED    17   HIGHEST GUST DIRECTION    SW (210)       
  AVERAGE WIND SPEED    10.6                                        


SKY COVER                                                             
  AVERAGE SKY COVER 0.2                                                 


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    66           400 AM                                      
 LOWEST     40          1200 AM                                      
 AVERAGE    53                                                        



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




$$

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Western Regional Climate Center, wrcc@dri.edu