Weather Service Report


647 
CDUS45 KTFX 210734
CLIHLN

CLIMATE REPORT 
NATIONAL WEATHER SERVICE GREAT FALLS MT
134 AM MDT MON SEP 21 2020

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

...THE HELENA MT CLIMATE SUMMARY FOR SEPTEMBER 20 2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1866 TO 2020


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 YESTERDAY                                                           
  MAXIMUM         72    219 PM  90    1922  71      1       61       
  MINIMUM         50   1159 PM  20    1983  42      8       48       
  AVERAGE         61                        56      5       55     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          1.00 1941   0.03  -0.03      T       
  MONTH TO DATE    0.25                      0.77  -0.52     2.29     
  SINCE OCT 1      9.12                     10.89  -1.77    14.82     
  SINCE JAN 1      7.27                      9.32  -2.05    13.91     

SNOWFALL (IN)                                                              
  YESTERDAY        0.0           1.4  1968   0.0    0.0      0.0      
  MONTH TO DATE    0.0                       0.7   -0.7      0.0      
  SINCE SEP 1      0.0                       0.7   -0.7      0.0      
  SINCE JUL 1      0.0                       1.0   -1.0      0.0      
  SNOW DEPTH       0                                                 

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY        4                         9     -5       10        
  MONTH TO DATE   73                       125    -52       81        
  SINCE SEP 1     73                       125    -52       81        
  SINCE JUL 1     92                       194   -102      109        

 COOLING                                                              
  YESTERDAY        0                         0      0        0        
  MONTH TO DATE   48                        22     26       57        
  SINCE SEP 1     48                        22     26       57        
  SINCE JAN 1    506                       405    101      407        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    24   HIGHEST WIND DIRECTION     W (260)       
  HIGHEST GUST SPEED    34   HIGHEST GUST DIRECTION     W (280)       
  AVERAGE WIND SPEED    11.0                                        


SKY COVER                                                             
  AVERAGE SKY COVER 0.5                                                 


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    68          1100 PM                                      
 LOWEST     32           400 PM                                      
 AVERAGE    50                                                        

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


THE HELENA MT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   70        90      1966                      
                                             1967                     
 MINIMUM TEMPERATURE (F)   41        20      1995                      


SUNRISE AND SUNSET                                                    
SEPTEMBER 21 2020.....SUNRISE   714 AM MDT   SUNSET   726 PM MDT     
SEPTEMBER 22 2020.....SUNRISE   716 AM MDT   SUNSET   724 PM MDT     


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




$$

Return to Home page


Western Regional Climate Center, wrcc@dri.edu