100  
CDUS45 KTFX 170836  
CLILWT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
136 AM MST SUN DEC 17 2023  
   
...............................
 
 
   
..THE LEWISTOWN MT CLIMATE SUMMARY FOR DECEMBER 16 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 53 1106 AM 61 1980 35 18 27  
MINIMUM 23 1246 AM -31 1964 13 10 3  
AVERAGE 38 24 14 15  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.42 1929 0.02 -0.02 0.00  
MONTH TO DATE 0.18 0.25 -0.07 0.16  
SINCE OCT 1 2.30 2.19 0.11 2.66  
SINCE JAN 1 19.59 16.91 2.68 16.58  
 
SNOWFALL (IN)  
YESTERDAY MM  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 27 41 -14 50  
MONTH TO DATE 473 634 -161 766  
SINCE DEC 1 473 634 -161 766  
SINCE JUL 1 2293 2725 -432 2764  
 
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 23 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 13.3  
 
SKY COVER  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77 100 AM  
LOWEST 22 200 PM  
AVERAGE 50  
   
......................................................
 
 
THE LEWISTOWN MT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 34 65 1925  
MINIMUM TEMPERATURE (F) 13 -30 1924  
 
SUNRISE AND SUNSET  
DECEMBER 17 2023......SUNRISE 758 AM MST SUNSET 429 PM MST  
DECEMBER 18 2023......SUNRISE 759 AM MST SUNSET 430 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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