109  
CDUS45 KMSO 180738  
CLIBTM  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MISSOULA MT  
138 AM MDT THU SEP 18 2025  
   
...............................  
 
   
..THE BUTTE MT CLIMATE SUMMARY FOR SEPTEMBER 17 2025  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1895 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 69 523 PM 90 1981 69 0 60  
MINIMUM 38 649 AM 9 1965 36 2 43  
AVERAGE 54 52 2 52  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.45 1908 0.03 -0.03 0.07  
MONTH TO DATE 0.37 0.64 -0.27 0.80  
SINCE JAN 1 8.65 10.41 -1.76 6.89  
 
SNOWFALL (IN)  
YESTERDAY MM  
MONTH TO DATE MM  
SINCE SEP 1 MM  
SINCE JUL 1 MM  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 11 12 -1 13  
MONTH TO DATE 121 170 -49 97  
SINCE SEP 1 121 170 -49 97  
SINCE JUL 1 272 385 -113 285  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 3 0 3 2  
SINCE SEP 1 3 0 3 2  
SINCE JAN 1 60 81 -21 127    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SE (140)  
AVERAGE WIND SPEED 4.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 100 AM  
LOWEST 31 300 PM  
AVERAGE 66  
   
......................................................  
 
THE BUTTE MT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 68 91 1981  
MINIMUM TEMPERATURE (F) 36 6 1965  
 
SUNRISE AND SUNSET  
SEPTEMBER 18 2025.....SUNRISE 712 AM MDT SUNSET 735 PM MDT  
SEPTEMBER 19 2025.....SUNRISE 714 AM MDT SUNSET 733 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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