101  
CDUS45 KBYZ 210430  
CLIBIL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BILLINGS MT  
930 PM MST SAT DEC 20 2025  
   
...............................
 
 
   
..THE BILLINGS MT CLIMATE SUMMARY FOR DECEMBER 20 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 41 245 PM 58 1941 35 6 58  
2024  
MINIMUM 26 937 AM -22 1990 18 8 22  
AVERAGE 34 27 7 40  
 
PRECIPITATION (IN)  
TODAY 0.00 0.34 1944 0.02 -0.02 0.00  
MONTH TO DATE 1.28 0.36 0.92 0.25  
SINCE OCT 1 3.77 2.33 1.44 1.05  
SINCE JAN 1 18.17 14.10 4.07 11.71  
 
SNOWFALL (IN)  
TODAY MM 4.8 1944 0.3 MM 0.0  
MONTH TO DATE 14.1 5.9 8.2 T  
SINCE DEC 1 14.1 5.9 8.2 T  
SINCE JUL 1 21.1 17.2 3.9 3.9  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 31 38 -7 25  
MONTH TO DATE 614 731 -117 568  
SINCE DEC 1 614 731 -117 568  
SINCE JUL 1 1843 2333 -490 1840  
 
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 W (280)  
HIGHEST GUST SPEED 52 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 15.1  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 61 700 PM  
LOWEST 24 200 PM  
AVERAGE 43  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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