079  
CDUS45 KTFX 202240  
CLILWT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
440 PM MDT MON JUL 20 2026  
   
...............................
 
 
   
..THE LEWISTOWN MT CLIMATE SUMMARY FOR JULY 20 2026
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1896 TO 2026  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM MM MM 96 1934 83 MM 76  
2003  
MINIMUM MM MM 36 1900 52 MM 53  
AVERAGE MM 68 MM 65  
 
PRECIPITATION (IN)  
TODAY 0.00 1.14 1961 0.06 -0.06 0.14  
MONTH TO DATE 1.73 1.24 0.49 1.20  
SINCE OCT 1 15.66 13.57 2.09 11.19  
SINCE JAN 1 13.07 11.12 1.95 9.82  
 
DEGREE DAYS  
HEATING  
TODAY MM 1 MM 0  
MONTH TO DATE 7 54 -47 41  
SINCE JUN 1 294 280 14 235  
SINCE JUL 1 7 54 -47 41  
 
COOLING  
TODAY MM 4 MM 0  
MONTH TO DATE 66 57 9 58  
SINCE JUN 1 69 74 -5 61  
SINCE JAN 1 82 75 7 64    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED MM HIGHEST WIND DIRECTION MM  
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM  
AVERAGE WIND SPEED MM  
 
SKY COVER  
AVERAGE SKY COVER MM  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST MM  
LOWEST MM  
AVERAGE MM  
   
......................................................
 
 
THE LEWISTOWN MT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 101 1931  
MINIMUM TEMPERATURE (F) 52 33 1926  
 
SUNRISE AND SUNSET  
JULY 20 2026..........SUNRISE 543 AM MDT SUNSET 905 PM MDT  
JULY 21 2026..........SUNRISE 544 AM MDT SUNSET 904 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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