Montana Department of Transportation

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Accidents and Incidents Report

Helena Climatic Report

CDUS45 KTFX 180820

CLIHLN





CLIMATE REPORT

NATIONAL WEATHER SERVICE GREAT FALLS MT                              

220 AM MDT TUE SEP 18 2018





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



...THE HELENA MT CLIMATE SUMMARY FOR SEPTEMBER 17 2018...



CLIMATE NORMAL PERIOD 1981 TO 2010

CLIMATE RECORD PERIOD 1866 TO 2018





WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     

                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     

                                                  NORMAL             

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

TEMPERATURE (F)                                                     

 YESTERDAY                                                           

  MAXIMUM         73    436 PM  90    1998  72      1       67       

  MINIMUM         42    654 AM  20    1965  43     -1       36       

  AVERAGE         58                        57      1       52      

                                                                     

PRECIPITATION (IN)                                                   

  YESTERDAY        0.00          0.98 1908   0.04  -0.04     0.00    

  MONTH TO DATE    0.32                      0.67  -0.35     1.73    

  SINCE OCT 1     14.90                     10.79   4.11     9.98    

  SINCE JAN 1     11.57                      9.22   2.35     7.00    

                                                                     

SNOWFALL (IN)                                                        

  YESTERDAY        0.0           3.4  1988   0.0    0.0      0.0     

  MONTH TO DATE    0.0                       0.6   -0.6      0.0     

  SINCE SEP 1      0.0                       0.6   -0.6      0.0     

  SINCE JUL 1      0.0                       0.9   -0.9      0.0     

  SNOW DEPTH       0                                                 

                                                                     

DEGREE DAYS                                                          

 HEATING                                                             

  YESTERDAY        7                         8     -1       13       

  MONTH TO DATE   66                        98    -32       77       

  SINCE SEP 1     66                        98    -32       77       

  SINCE JUL 1    137                       167    -30       79       

                                                                     

 COOLING                                                             

  YESTERDAY        0                         1     -1        0       

  MONTH TO DATE   18                        22     -4       66       

  SINCE SEP 1     18                        22     -4       66       

  SINCE JAN 1    410                       405      5      702       

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





WIND (MPH)                                                           

  HIGHEST WIND SPEED    13   HIGHEST WIND DIRECTION     N (360)      

  HIGHEST GUST SPEED    16   HIGHEST GUST DIRECTION     N (20)       

  AVERAGE WIND SPEED     4.5                                         



                                                                     

SKY COVER                                                            

  AVERAGE SKY COVER 0.0                                              



                                                                     

WEATHER CONDITIONS                                                  

 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        

  NO SIGNIFICANT WEATHER WAS OBSERVED.                               



                                                                     

RELATIVE HUMIDITY (PERCENT)                                          

 HIGHEST    89           700 AM                                     

 LOWEST     25           400 PMAVERAGE    57                                                       



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



                                                                     

THE HELENA MT CLIMATE NORMALS FOR TODAY

                         NORMAL    RECORD    YEAR                    

 MAXIMUM TEMPERATURE (F)   72        91      1966                    

 MINIMUM TEMPERATURE (F)   42        19      1965                    



                                                                     

SUNRISE AND SUNSET                                                   

SEPTEMBER 18 2018.....SUNRISE   710 AM MDT   SUNSET   733 PM MDT   

SEPTEMBER 19 2018.....SUNRISE   711 AM MDT   SUNSET   731 PM MDT   



                                                                    

-  INDICATES NEGATIVE NUMBERS.                                      

R  INDICATES RECORD WAS SET OR TIED.                                

MM INDICATES DATA IS MISSING.                                       

T  INDICATES TRACE AMOUNT.                                          









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