890  
CDUS45 KBYZ 181831  
CLIBIL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BILLINGS MT  
1131 AM MST THU DEC 18 2025  
   
...............................
 
 
   
..THE BILLINGS MT CLIMATE SUMMARY FOR DECEMBER 18 2025
 
 
VALID AS OF 1100 AM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1934 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 38 1203 AM 62 1979 35 3 53  
MINIMUM 12 856 AM -19 1983 19 -7 25  
AVERAGE 25 27 -2 39  
 
PRECIPITATION (IN)  
TODAY 0.00 0.46 1973 0.02 -0.02 0.00  
MONTH TO DATE 1.28 0.32 0.96 0.25  
SINCE OCT 1 3.77 2.29 1.48 1.05  
SINCE JAN 1 18.17 14.06 4.11 11.71  
 
SNOWFALL (IN)  
TODAY MM 5.1 1973 0.3 MM 0.0  
MONTH TO DATE 14.1 5.2 8.9 T  
SINCE DEC 1 14.1 5.2 8.9 T  
SINCE JUL 1 21.1 16.5 4.6 3.9  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 40 38 2 26  
MONTH TO DATE 570 655 -85 513  
SINCE DEC 1 570 655 -85 513  
SINCE JUL 1 1799 2257 -458 1785  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 659 662 -3 790    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 38 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 50 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 11.0  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 68 400 AM  
LOWEST 32 1200 AM  
AVERAGE 50  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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