Montana Department of Transportation

Malcolm “Mack” Long, Director

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Accidents and Incidents Report

Great Falls Climatic Report

CDUS45 KTFX 100739

CLIGTF



CLIMATE REPORT 

NATIONAL WEATHER SERVICE GREAT FALLS MT

139 AM MDT MON MAY 10 2021



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...THE GREAT FALLS MT CLIMATE SUMMARY FOR MAY 9 2021...



CLIMATE NORMAL PERIOD 1991 TO 2020

CLIMATE RECORD PERIOD 1886 TO 2021





WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      

                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     

                                                  NORMAL           

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

TEMPERATURE (F)                                                          

 YESTERDAY                                                           

  MAXIMUM         46    607 PM  85    1987  63    -17       58       

  MINIMUM         32    804 AM  24    1990  36     -4       32       

  AVERAGE         39                        49    -10       45     



PRECIPITATION (IN)                                                    

  YESTERDAY        0.28          0.96 1983   0.06   0.22      T       

  MONTH TO DATE    1.61                      0.50   1.11     1.59     

  SINCE OCT 1      7.07                      6.33   0.74     6.39     

  SINCE JAN 1      4.00                      4.05  -0.05     3.69     



SNOWFALL (IN)                                                              

  YESTERDAY        T             7.0  1983   0.1   -0.1      0.0      

  MONTH TO DATE    T                         1.0   -1.0      0.0      

  SINCE MAR 1     12.5                      20.5   -8.0     29.8      

  SINCE JUL 1     65.5                      64.9    0.6     99.6      

  SNOW DEPTH       0                                                 



DEGREE DAYS                                                           

 HEATING                                                              

  YESTERDAY       26                        16     10       20        

  MONTH TO DATE  155                       154      1      165        

  SINCE MAR 1   1646                      1790   -144     1959        

  SINCE JUL 1   6949                      7260   -311     7426        



 COOLING                                                              

  YESTERDAY        0                         0      0        0        

  MONTH TO DATE    0                         0      0        0        

  SINCE MAR 1      0                         0      0        0        

  SINCE JAN 1      0                         0      0        0        

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





WIND (MPH)                                                            

  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     W (270)       

  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION    NW (300)       

  AVERAGE WIND SPEED     6.9                                        





SKY COVER                                                             

  AVERAGE SKY COVER 1.0                                                 





WEATHER CONDITIONS                                                    

THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                         

  LIGHT RAIN                                                          

  LIGHT SNOW                                                          

  FOG                                                                 





RELATIVE HUMIDITY (PERCENT)

 HIGHEST   100           800 AM                                      

 LOWEST     60           600 PM                                      

 AVERAGE    80                                                        



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THE GREAT FALLS MT CLIMATE NORMALS FOR TODAY

                         NORMAL    RECORD    YEAR                     

 MAXIMUM TEMPERATURE (F)   63        88      1936                      

 MINIMUM TEMPERATURE (F)   36        21      2004                      





SUNRISE AND SUNSET                                                    

MAY 10 2021...........SUNRISE   555 AM MDT   SUNSET   850 PM MDT     

MAY 11 2021...........SUNRISE   553 AM MDT   SUNSET   851 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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