593  
CDUS45 KBYZ 132333  
CLIBIL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BILLINGS MT  
433 PM MST SAT DEC 13 2025  
   
...............................
 
 
   
..THE BILLINGS MT CLIMATE SUMMARY FOR DECEMBER 13 2025
 
 
VALID TODAY AS OF 0400 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 12 253 PM 60 2014 36 -24 47  
MINIMUM 5 806 AM -16 1963 19 -14 22  
AVERAGE 9 28 -19 35  
 
PRECIPITATION (IN)  
TODAY T 0.32 1975 0.01 -0.01 0.00  
MONTH TO DATE 1.28 0.23 1.05 T  
SINCE OCT 1 3.77 2.20 1.57 0.80  
SINCE JAN 1 18.17 13.97 4.20 11.46  
 
SNOWFALL (IN)  
TODAY MM 4.8 2008 0.3 MM 0.0  
MONTH TO DATE 14.1 3.7 10.4 T  
SINCE DEC 1 14.1 3.7 10.4 T  
SINCE JUL 1 21.1 15.0 6.1 3.9  
SNOW DEPTH 12  
 
DEGREE DAYS  
HEATING  
TODAY 56 37 19 30  
MONTH TO DATE 444 465 -21 359  
SINCE DEC 1 444 465 -21 359  
SINCE JUL 1 1673 2067 -394 1631  
 
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 15 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION NE (30)  
AVERAGE WIND SPEED 6.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT SNOW  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 91 500 AM  
LOWEST 80 100 PM  
AVERAGE 86  
   
......................................................
 
 
THE BILLINGS MT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 36 56 1962  
2021  
MINIMUM TEMPERATURE (F) 19 -18 2008  
 
SUNRISE AND SUNSET  
DECEMBER 13 2025......SUNRISE 747 AM MST SUNSET 430 PM MST  
DECEMBER 14 2025......SUNRISE 748 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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