372  
CDUS45 KTFX 212240  
CLILWT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
440 PM MDT THU AUG 21 2025  
   
...............................  
 
   
..THE LEWISTOWN MT CLIMATE SUMMARY FOR AUGUST 21 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 76 259 PM 97 1969 80 -4 78  
MINIMUM 53 553 AM 29 1904 49 4 50  
AVERAGE 65 64 1 64  
 
PRECIPITATION (IN)  
TODAY 0.00 1.80 1918 0.06 -0.06 0.00  
MONTH TO DATE 1.73 1.15 0.58 0.96  
SINCE OCT 1 14.24 15.24 -1.00 14.75  
SINCE JAN 1 12.87 12.79 0.08 12.29  
 
DEGREE DAYS  
HEATING  
TODAY 0 3 -3 1  
MONTH TO DATE 18 38 -20 28  
SINCE JUN 1 263 329 -66 319  
SINCE JUL 1 69 103 -34 76  
 
COOLING  
TODAY 0 2 -2 0  
MONTH TO DATE 61 73 -12 81  
SINCE JUN 1 140 191 -51 238  
SINCE JAN 1 143 192 -49 238    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SW (240)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION W (270)  
AVERAGE WIND SPEED 5.5  
 
SKY COVER  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83  
LOWEST 34  
AVERAGE 59  
   
......................................................  
 
THE LEWISTOWN MT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 80 98 1976  
MINIMUM TEMPERATURE (F) 48 34 1992  
 
SUNRISE AND SUNSET  
AUGUST 21 2025........SUNRISE 623 AM MDT SUNSET 817 PM MDT  
AUGUST 22 2025........SUNRISE 625 AM MDT SUNSET 816 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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