424  
CDUS45 KTFX 192230  
CLIGTF  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
430 PM MDT TUE SEP 19 2017  
 
   
...............................
 
 
   
..THE GREAT FALLS MT CLIMATE SUMMARY FOR SEPTEMBER 19 2017
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1886 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 58 237 PM 92 2009 69 -11 71  
MINIMUM 41 614 AM 26 1957 41 0 40  
AVERAGE 50 55 -5 56  
 
PRECIPITATION (IN)  
TODAY 0.00 1.51 1925 0.05 -0.05 0.00  
MONTH TO DATE 2.16 0.95 1.21 1.33  
SINCE OCT 1 14.75 14.28 0.47 15.73  
SINCE JAN 1 11.82 12.28 -0.46 10.63  
 
SNOWFALL (IN)  
TODAY 0.0 0.3 1983 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.5 -0.5 0.0  
SINCE SEP 1 0.0 0.5 -0.5 0.0  
SINCE JUL 1 0.0 0.8 -0.8 T  
 
DEGREE DAYS  
HEATING  
TODAY 15 11 4 9  
MONTH TO DATE 121 147 -26 180  
SINCE SEP 1 121 147 -26 180  
SINCE JUL 1 150 268 -118 281  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 47 20 27 10  
SINCE SEP 1 47 20 27 10  
SINCE JAN 1 456 296 160 252    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 13.3  
 
 
SKY COVER  
AVERAGE SKY COVER 0.1  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 73 600 AM  
LOWEST 32 1200 PM  
AVERAGE 53  
   
......................................................
 
 
 
THE GREAT FALLS MT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 68 93 1917  
MINIMUM TEMPERATURE (F) 41 24 1995  
 
 
SUNRISE AND SUNSET  
SEPTEMBER 19 2017.....SUNRISE 709 AM MDT SUNSET 729 PM MDT  
SEPTEMBER 20 2017.....SUNRISE 710 AM MDT SUNSET 727 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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