294  
CDUS45 KBYZ 010331  
CLIBIL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BILLINGS MT  
931 PM MDT TUE SEP 30 2025  
   
...............................
 
 
   
..THE BILLINGS MT CLIMATE SUMMARY FOR SEPTEMBER 30 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 83 305 PM 90 1963 67 16 63  
MINIMUM 56 604 AM 23 1985 44 12 43  
AVERAGE 70 55 15 53  
 
PRECIPITATION (IN)  
TODAY 0.00 0.54 2022 0.05 -0.05 0.00  
MONTH TO DATE 0.90 1.36 -0.46 1.72  
SINCE OCT 1 15.66 14.31 1.35 13.05  
SINCE JAN 1 14.36 11.77 2.59 10.66  
 
SNOWFALL (IN)  
TODAY MM 2.4 1950 0.0 MM 0.0  
MONTH TO DATE 0.0 0.3 -0.3 0.0  
SINCE SEP 1 0.0 0.3 -0.3 0.0  
SINCE JUL 1 T 0.3 -0.3 T  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 0 10 -10 12  
MONTH TO DATE 47 168 -121 55  
SINCE SEP 1 47 168 -121 55  
SINCE JUL 1 63 204 -141 69  
 
COOLING  
TODAY 5 1 4 0  
MONTH TO DATE 73 62 11 118  
SINCE SEP 1 73 62 11 118  
SINCE JAN 1 658 657 1 785    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 13.3  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 64 500 AM  
LOWEST 24 200 PM  
AVERAGE 44  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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