373  
CDUS45 KTFX 130837  
CLILWT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
137 AM MST WED DEC 13 2023  
   
...............................
 
 
   
..THE LEWISTOWN MT CLIMATE SUMMARY FOR DECEMBER 12 2023
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1896 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 40 337 PM 60 1924 35 5 15  
MINIMUM 17 806 AM -23 1922 14 3 7  
AVERAGE 29 24 5 11  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.96 1937 0.01 -0.01 T  
MONTH TO DATE 0.18 0.18 0.00 0.13  
SINCE OCT 1 2.30 2.12 0.18 2.63  
SINCE JAN 1 19.59 16.84 2.75 16.55  
 
SNOWFALL (IN)  
YESTERDAY MM  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 36 40 -4 54  
MONTH TO DATE 352 470 -118 563  
SINCE DEC 1 352 470 -118 563  
SINCE JUL 1 2172 2561 -389 2561  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 229 229 0 402    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 13 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 5.1  
 
SKY COVER  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 400 AM  
LOWEST 55 200 PM  
AVERAGE 74  
   
......................................................
 
 
THE LEWISTOWN MT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 35 65 1960  
MINIMUM TEMPERATURE (F) 14 -22 1963  
 
SUNRISE AND SUNSET  
DECEMBER 13 2023......SUNRISE 755 AM MST SUNSET 429 PM MST  
DECEMBER 14 2023......SUNRISE 756 AM MST SUNSET 429 PM MST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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