475  
CDUS45 KBYZ 190431  
CLIBIL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BILLINGS MT  
931 PM MST THU DEC 18 2025  
   
...............................  
 
   
..THE BILLINGS MT CLIMATE SUMMARY FOR DECEMBER 18 2025  
 
VALID AS OF 0900 PM 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 39 343 PM 62 1979 35 4 53  
MINIMUM 26 500 AM -19 1983 19 7 25  
AVERAGE 33 27 6 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 0.0 5.1 1973 0.3 -0.3 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 0  
 
DEGREE DAYS  
HEATING  
TODAY 32 38 -6 26  
MONTH TO DATE 562 655 -93 513  
SINCE DEC 1 562 655 -93 513  
SINCE JUL 1 1791 2257 -466 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 8.9  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
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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