915  
CDUS45 KMSO 200737  
CLIMSO  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE MISSOULA MT  
137 AM MDT WED SEP 20 2023  
   
...............................
 
 
   
..THE MISSOULA MT CLIMATE SUMMARY FOR SEPTEMBER 19 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 68 354 PM 89 1938 71 -3 79  
MINIMUM 42 1159 PM 23 1964 42 0 44  
AVERAGE 55 56 -1 62  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.96 1925 0.04 -0.04 0.00  
MONTH TO DATE 0.59 0.62 -0.03 0.24  
SINCE OCT 1 13.39 13.77 -0.38 10.17  
SINCE JAN 1 10.53 10.33 0.20 6.92  
 
SNOWFALL (IN)  
YESTERDAY 0.0  
MONTH TO DATE 0.0  
SINCE SEP 1 0.0  
SINCE JUL 1 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 10 9 1 3  
MONTH TO DATE 24 116 -92 58  
SINCE SEP 1 24 116 -92 58  
SINCE JUL 1 30 202 -172 61  
 
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 16 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 6.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 73 600 AM  
LOWEST 28 400 PM  
AVERAGE 51  
   
......................................................
 
 
THE MISSOULA MT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 91 1938  
MINIMUM TEMPERATURE (F) 41 24 1983  
 
SUNRISE AND SUNSET  
SEPTEMBER 20 2023.....SUNRISE 720 AM MDT SUNSET 738 PM MDT  
SEPTEMBER 21 2023.....SUNRISE 722 AM MDT SUNSET 736 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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