411  
CDUS45 KMSO 170737  
CLIMSO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MISSOULA MT  
137 AM MDT SUN SEP 17 2023  
   
...............................
 
 
   
..THE MISSOULA MT CLIMATE SUMMARY FOR SEPTEMBER 16 2023
 
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1893 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 86 429 PM 91 1937 73 13 72  
2009  
MINIMUM 41 616 AM 27 1970 42 -1 48  
AVERAGE 64 58 6 60  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.83 1947 0.03 -0.03 0.19  
MONTH TO DATE 0.59 0.52 0.07 0.24  
SINCE OCT 1 13.39 13.67 -0.28 10.17  
SINCE JAN 1 10.53 10.23 0.30 6.92  
 
SNOWFALL (IN)  
YESTERDAY 0.0  
MONTH TO DATE 0.0  
SINCE SEP 1 0.0  
SINCE JUL 1 0.0  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 1 8 -7 5  
MONTH TO DATE 13 91 -78 43  
SINCE SEP 1 13 91 -78 43  
SINCE JUL 1 19 177 -158 46  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 11 11 0 49  
SINCE SEP 1 11 11 0 49  
SINCE JAN 1 536 303 233 609    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 7 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 9 HIGHEST GUST DIRECTION N (340)  
AVERAGE WIND SPEED 1.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82 600 AM  
LOWEST 19 400 PM  
AVERAGE 51  
   
......................................................
 
 
THE MISSOULA MT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 91 1981  
MINIMUM TEMPERATURE (F) 42 24 1965  
 
SUNRISE AND SUNSET  
SEPTEMBER 17 2023.....SUNRISE 716 AM MDT SUNSET 744 PM MDT  
SEPTEMBER 18 2023.....SUNRISE 718 AM MDT SUNSET 742 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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