998  
CDUS45 KBYZ 232230  
CLIBIL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BILLINGS MT  
430 PM MDT TUE SEP 23 2025  
   
...............................
 
 
   
..THE BILLINGS MT CLIMATE SUMMARY FOR SEPTEMBER 23 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 70 259 PM 91 1966 71 -1 76  
1992  
2011  
MINIMUM 44 635 AM 23 1984 46 -2 55  
AVERAGE 57 58 -1 66  
 
PRECIPITATION (IN)  
TODAY 0.00 0.84 2007 0.05 -0.05 0.00  
MONTH TO DATE 0.90 1.01 -0.11 1.72  
SINCE OCT 1 15.66 13.96 1.70 13.05  
SINCE JAN 1 14.36 11.42 2.94 10.66  
 
SNOWFALL (IN)  
TODAY MM 6.2 1984 0.0 MM 0.0  
MONTH TO DATE 0.0 0.1 -0.1 0.0  
SINCE SEP 1 0.0 0.1 -0.1 0.0  
SINCE JUL 1 T 0.1 -0.1 T  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 8 8 0 0  
MONTH TO DATE 46 104 -58 43  
SINCE SEP 1 46 104 -58 43  
SINCE JUL 1 62 140 -78 57  
 
COOLING  
TODAY 0 1 -1 1  
MONTH TO DATE 60 56 4 83  
SINCE SEP 1 60 56 4 83  
SINCE JAN 1 645 651 -6 750    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 10.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 600 AM  
LOWEST 38 200 PM  
AVERAGE 66  
   
......................................................
 
 
THE BILLINGS MT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 70 92 2020  
MINIMUM TEMPERATURE (F) 46 22 1984  
 
SUNRISE AND SUNSET  
SEPTEMBER 23 2025.....SUNRISE 703 AM MDT SUNSET 709 PM MDT  
SEPTEMBER 24 2025.....SUNRISE 704 AM MDT SUNSET 707 PM MDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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