520  
CDUS45 KTFX 172340  
CLILWT  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
440 PM MST SUN DEC 17 2023  
   
...............................  
 
   
..THE LEWISTOWN MT CLIMATE SUMMARY FOR DECEMBER 17 2023  
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 44 358 AM 65 1925 34 10 25  
MINIMUM 33 825 AM -30 1924 13 20 1  
AVERAGE 39 24 15 13  
 
PRECIPITATION (IN)  
TODAY 0.00 0.28 1967 0.01 -0.01 T  
MONTH TO DATE 0.18 0.26 -0.08 0.16  
SINCE OCT 1 2.30 2.20 0.10 2.66  
SINCE JAN 1 19.59 16.92 2.67 16.58  
 
DEGREE DAYS  
HEATING  
TODAY 26 41 -15 52  
MONTH TO DATE 499 675 -176 818  
SINCE DEC 1 499 675 -176 818  
SINCE JUL 1 2319 2766 -447 2816  
 
COOLING  
TODAY 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 18 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 5.8  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 67  
LOWEST 30  
AVERAGE 49  
   
......................................................  
 
THE LEWISTOWN MT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 34 62 1979  
MINIMUM TEMPERATURE (F) 13 -37 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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