353  
CDUS45 KBYZ 160931  
CLIBIL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BILLINGS MT  
331 AM MDT TUE SEP 16 2025  
   
...............................
 
 
   
..THE BILLINGS MT CLIMATE SUMMARY FOR SEPTEMBER 15 2025
 
 
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)  
YESTERDAY  
MAXIMUM 67 1223 AM 95 2000 75 -8 86  
2019  
MINIMUM 53 1124 PM 31 1965 49 4 51  
AVERAGE 60 62 -2 69  
 
PRECIPITATION (IN)  
YESTERDAY 0.11 1.22 2017 0.04 0.07 0.00  
MONTH TO DATE 0.56 0.63 -0.07 0.42  
SINCE OCT 1 15.32 13.58 1.74 11.75  
SINCE JAN 1 14.02 11.04 2.98 9.36  
 
SNOWFALL (IN)  
YESTERDAY 0.0 3.0 1965 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE SEP 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 T 0.0 0.0 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 5 5 0 0  
MONTH TO DATE 19 52 -33 11  
SINCE SEP 1 19 52 -33 11  
SINCE JUL 1 35 88 -53 25  
 
COOLING  
YESTERDAY 0 2 -2 4  
MONTH TO DATE 51 44 7 80  
SINCE SEP 1 51 44 7 80  
SINCE JAN 1 636 639 -3 747    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION N (340)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION N (340)  
AVERAGE WIND SPEED 9.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 700 PM  
LOWEST 42 1200 AM  
AVERAGE 66  
   
......................................................
 
 
THE BILLINGS MT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 94 1979  
2019  
MINIMUM TEMPERATURE (F) 49 29 1965  
 
SUNRISE AND SUNSET  
SEPTEMBER 16 2025.....SUNRISE 654 AM MDT SUNSET 723 PM MDT  
SEPTEMBER 17 2025.....SUNRISE 655 AM MDT SUNSET 721 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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