Montana Department of Transportation

Main Content

Accidents and Incidents Report

Helena Climatic Report

CDUS45 KTFX 222230
CLIHLN


CLIMATE REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT                              
430 PM MDT FRI SEP 22 2017


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

...THE HELENA MT CLIMATE SUMMARY FOR SEPTEMBER 22 2017...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1866 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 TODAY                                                               
  MAXIMUM         42   1212 AM  89    1966  70    -28       56       
  MINIMUM         35    149 PM  21    1934  41     -6       47       
  AVERAGE         39                        55    -16       52      
                                                                     
PRECIPITATION (IN)                                                   
  TODAY            0.13          0.48 1930   0.03   0.10     0.20    
  MONTH TO DATE    1.91                      0.84   1.07     0.94    
  SINCE OCT 1     10.16                     10.96  -0.80     8.84    
  SINCE JAN 1      7.18                      9.39  -2.21     7.14    
                                                                     
SNOWFALL (IN)                                                        
  TODAY           MM             5.1  1934   0.0   MM        0.0     
  MONTH TO DATE    0.0                       0.8   -0.8      0.0     
  SINCE SEP 1      0.0                       0.8   -0.8      0.0     
  SINCE JUL 1      0.0                       1.1   -1.1      0.0     
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  TODAY           26                        10     16       13       
  MONTH TO DATE  165                       145     20      176       
  SINCE SEP 1    165                       145     20      176       
  SINCE JUL 1    167                       214    -47      220       
                                                                     
 COOLING                                                             
  TODAY            0                         0      0        0       
  MONTH TO DATE   66                        22     44       12       
  SINCE SEP 1     66                        22     44       12       
  SINCE JAN 1    702                       405    297      454       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION     N (350)      
  HIGHEST GUST SPEED    26   HIGHEST GUST DIRECTION     N (350)      
  AVERAGE WIND SPEED    12.6                                         

                                                                     
SKY COVER                                                            
  AVERAGE SKY COVER 1.0                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED TODAY.                            
  LIGHT RAIN                                                         
  LIGHT SNOW                                                         
  FOG                                                                
  HAZE                                                               

                                                                     
RELATIVEHUMIDITY (PERCENT)                                          
 HIGHEST   100           200 PM                                     
 LOWEST     73           100 AM                                     
 AVERAGE    87                                                       

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

                                                                     
THE HELENA MT CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   69        90      1966                    
 MINIMUM TEMPERATURE (F)   41        16      1926                    

                                                                     
SUNRISE AND SUNSET                                                   
SEPTEMBER 22 2017.....SUNRISE   715 AM MDT   SUNSET   725 PM MDT   
SEPTEMBER 23 2017.....SUNRISE   717 AM MDT   SUNSET   723 PM MDT   

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




--------------------------------