841  
CDUS45 KTFX 210855  
CLILWT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
255 AM MDT SAT OCT 21 2017  
 
   
...............................
 
 
   
..THE LEWISTOWN MT CLIMATE SUMMARY FOR OCTOBER 20 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1896 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 71 1258 PM 84 1927 55 16 62  
MINIMUM 40 910 PM 10 1916 30 10 26  
AVERAGE 56 42 14 44  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 0.60 1958 0.03 -0.02 0.00  
MONTH TO DATE 0.45 0.80 -0.35 3.06  
SINCE OCT 1 0.45 0.80 -0.35 3.06  
SINCE JAN 1 11.06 15.15 -4.09 19.09  
 
SNOWFALL (IN)  
YESTERDAY MM  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 9 23 -14 21  
MONTH TO DATE 400 389 11 438  
SINCE SEP 1 712 708 4 752  
SINCE JUL 1 750 866 -116 863  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 33 14 19 14  
SINCE JAN 1 375 210 165 259    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 33 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 43 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 14.1  
 
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 70 700 PM  
LOWEST 14 1200 AM  
AVERAGE 42  
   
......................................................
 
 
 
THE LEWISTOWN MT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 55 81 1927  
MINIMUM TEMPERATURE (F) 29 5 1930  
 
 
SUNRISE AND SUNSET  
OCTOBER 21 2017.......SUNRISE 745 AM MDT SUNSET 619 PM MDT  
OCTOBER 22 2017.......SUNRISE 746 AM MDT SUNSET 617 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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