401  
CDUS45 KTFX 172240  
CLILWT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
440 PM MDT THU JUL 17 2025  
   
...............................
 
 
   
..THE LEWISTOWN MT CLIMATE SUMMARY FOR JULY 17 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 78 227 PM 101 2022 83 -5 90  
MINIMUM 43 442 AM 38 1982 51 -8 56  
AVERAGE 61 67 -6 73  
 
PRECIPITATION (IN)  
TODAY 0.00 1.27 1987 0.06 -0.06 0.00  
MONTH TO DATE 1.06 1.08 -0.02 0.51  
SINCE OCT 1 11.05 13.41 -2.36 13.78  
SINCE JAN 1 9.68 10.96 -1.28 11.32  
 
DEGREE DAYS  
HEATING  
TODAY 4 2 2 0  
MONTH TO DATE 41 49 -8 48  
SINCE JUN 1 235 275 -40 291  
SINCE JUL 1 41 49 -8 48  
 
COOLING  
TODAY 0 4 -4 8  
MONTH TO DATE 52 45 7 69  
SINCE JUN 1 55 62 -7 79  
SINCE JAN 1 58 63 -5 79    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION N (340)  
AVERAGE WIND SPEED 4.7  
 
SKY COVER  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96  
LOWEST 37  
AVERAGE 67  
   
......................................................
 
 
THE LEWISTOWN MT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 100 1955  
MINIMUM TEMPERATURE (F) 51 36 1919  
 
SUNRISE AND SUNSET  
JULY 17 2025..........SUNRISE 540 AM MDT SUNSET 907 PM MDT  
JULY 18 2025..........SUNRISE 541 AM MDT SUNSET 906 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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