Montana Department of Transportation

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Accidents and Incidents Report

Helena Climatic Report

CDUS45 KTFX 140837

CLIHLN





CLIMATE REPORT 

NATIONAL WEATHER SERVICE GREAT FALLS MT

137 AM MST SAT DEC 14 2019



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



...THE HELENA MT CLIMATE SUMMARY FOR DECEMBER 13 2019...



CLIMATE NORMAL PERIOD 1981 TO 2010

CLIMATE RECORD PERIOD 1866 TO 2019





WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      

                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     

                                                  NORMAL           

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

TEMPERATURE (F)                                                          

 YESTERDAY                                                           

  MAXIMUM         43    124 PM  58    1924  31     12       44       

  MINIMUM         29   1159 PM -22    1919  12     17       27       

  AVERAGE         36                        22     14       36     



PRECIPITATION (IN)                                                    

  YESTERDAY        0.00          0.48 1917   0.01  -0.01     0.00     

  MONTH TO DATE    0.04                      0.18  -0.14     0.03     

  SINCE OCT 1      1.85                      1.35   0.50     0.78     

  SINCE JAN 1     16.50                     11.00   5.50    12.79     



SNOWFALL (IN)                                                              

  YESTERDAY        0.0           9.8  1991   0.2   -0.2      0.0      

  MONTH TO DATE    0.5                       3.1   -2.6      0.4      

  SINCE DEC 1      0.5                       3.1   -2.6      0.4      

  SINCE JUL 1     19.8                      11.9    7.9      2.8      

  SNOW DEPTH       2                                                 



DEGREE DAYS                                                           

 HEATING                                                              

  YESTERDAY       29                        43    -14       29        

  MONTH TO DATE  451                       542    -91      505        

  SINCE DEC 1    451                       542    -91      505        

  SINCE JUL 1   2521                      2424     97     2388        



 COOLING                                                              

  YESTERDAY        0                         0      0        0        

  MONTH TO DATE    0                         0      0        0        

  SINCE DEC 1      0                         0      0        0        

  SINCE JAN 1    407                       406      1      410        

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





WIND (MPH)                                                            

  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION     W (260)       

  HIGHEST GUST SPEED    33   HIGHEST GUST DIRECTION     W (290)       

  AVERAGE WIND SPEED     7.1                                        





SKY COVER                                                             

  AVERAGE SKY COVER 0.8                                                 





WEATHER CONDITIONS                                                    

THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                         

  NO SIGNIFICANT WEATHER WAS OBSERVED.                                  





RELATIVE HUMIDITY (PERCENT)

 HIGHEST    69          1200 AM                                      

 LOWEST     41           100 PM                                      

 AVERAGE    55                                                        



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





THE HELENA MT CLIMATE NORMALS FOR TODAY

                         NORMAL    RECORD    YEAR                     

 MAXIMUM TEMPERATURE (F)   31        63      1924                      

 MINIMUM TEMPERATURE (F)   12       -20      1926                      





SUNRISE AND SUNSET                                                    

DECEMBER14 2019......SUNRISE   805 AM MST   SUNSET   441 PM MST     

DECEMBER 15 2019......SUNRISE   805 AM MST   SUNSET   441 PM MST     





-  INDICATES NEGATIVE NUMBERS.

R  INDICATES RECORD WAS SET OR TIED.

MM INDICATES DATA IS MISSING.

T  INDICATES TRACE AMOUNT.









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