008  
CDUS45 KTFX 182240  
CLILWT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
440 PM MDT MON AUG 18 2025  
   
...............................
 
 
   
..THE LEWISTOWN MT CLIMATE SUMMARY FOR AUGUST 18 2025
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1896 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 84 255 PM 97 1964 81 3 93  
MINIMUM 50 535 AM 33 1902 49 1 53  
AVERAGE 67 65 2 73  
 
PRECIPITATION (IN)  
TODAY 0.00 0.90 2016 0.05 -0.05 0.00  
MONTH TO DATE 1.73 0.98 0.75 0.47  
SINCE OCT 1 14.24 15.07 -0.83 14.26  
SINCE JAN 1 12.87 12.62 0.25 11.80  
 
DEGREE DAYS  
HEATING  
TODAY 0 3 -3 0  
MONTH TO DATE 18 29 -11 27  
SINCE JUN 1 263 320 -57 318  
SINCE JUL 1 69 94 -25 75  
 
COOLING  
TODAY 2 3 -1 8  
MONTH TO DATE 43 66 -23 68  
SINCE JUN 1 122 184 -62 225  
SINCE JAN 1 125 185 -60 225    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (100)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION SE (120)  
AVERAGE WIND SPEED 5.6  
 
SKY COVER  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92  
LOWEST 34  
AVERAGE 63  
   
......................................................
 
 
THE LEWISTOWN MT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 81 97 2008  
MINIMUM TEMPERATURE (F) 49 31 1907  
 
SUNRISE AND SUNSET  
AUGUST 18 2025........SUNRISE 619 AM MDT SUNSET 823 PM MDT  
AUGUST 19 2025........SUNRISE 621 AM MDT SUNSET 821 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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