255  
CDUS45 KTFX 182340  
CLIHLN  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE GREAT FALLS MT  
440 PM MST MON DEC 18 2023  
   
...............................
 
 
   
..THE HELENA MT CLIMATE SUMMARY FOR DECEMBER 18 2023
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1866 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 37 301 PM 59 1917 32 5 9  
MINIMUM 21 252 AM -30 1924 13 8 -8  
AVERAGE 29 22 7 1  
 
PRECIPITATION (IN)  
TODAY 0.00 0.50 1884 0.02 -0.02 0.00  
MONTH TO DATE 0.03 0.27 -0.24 0.40  
SINCE OCT 1 1.52 1.64 -0.12 3.12  
SINCE JAN 1 12.48 11.21 1.27 11.21  
 
DEGREE DAYS  
HEATING  
TODAY 36 42 -6 64  
MONTH TO DATE 545 727 -182 800  
SINCE DEC 1 545 727 -182 800  
SINCE JUL 1 2106 2569 -463 2670  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 588 433 155 751    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 5 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 6 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 0.2  
 
SKY COVER  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 78 600 AM  
LOWEST 54 200 PM  
AVERAGE 66  
   
......................................................
 
 
THE HELENA MT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 32 59 1941  
2004  
MINIMUM TEMPERATURE (F) 13 -30 1924  
 
SUNRISE AND SUNSET  
DECEMBER 18 2023......SUNRISE 807 AM MST SUNSET 442 PM MST  
DECEMBER 19 2023......SUNRISE 808 AM MST SUNSET 442 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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