030  
CDUS45 KBYZ 212231  
CLIBIL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BILLINGS MT  
431 PM MDT THU SEP 21 2023  
   
...............................
 
 
   
..THE BILLINGS MT CLIMATE SUMMARY FOR SEPTEMBER 21 2023
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1991 TO 2020  
CLIMATE RECORD PERIOD 1934 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 56 1232 AM 91 1938 72 -16 62  
MINIMUM 50 258 PM 28 1995 47 3 48  
AVERAGE 53 59 -6 55  
 
PRECIPITATION (IN)  
TODAY 0.02 0.67 1991 0.05 -0.03 0.00  
MONTH TO DATE 0.15 0.91 -0.76 0.55  
SINCE OCT 1 16.70 13.86 2.84 15.37  
SINCE JAN 1 14.65 11.32 3.33 12.61  
 
SNOWFALL (IN)  
TODAY 0.0 0.5 2000 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.1 -0.1 0.0  
SINCE SEP 1 0.0 0.1 -0.1 0.0  
SINCE JUL 1 T 0.1 -0.1 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 12 7 5 10  
MONTH TO DATE 27 89 -62 49  
SINCE SEP 1 27 89 -62 49  
SINCE JUL 1 43 125 -82 55  
 
COOLING  
TODAY 0 1 -1 0  
MONTH TO DATE 75 54 21 122  
SINCE SEP 1 75 54 21 122  
SINCE JAN 1 707 649 58 895    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION N (20)  
AVERAGE WIND SPEED 10.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 300 PM  
LOWEST 53 1200 AM  
AVERAGE 73  
   
......................................................
 
 
THE BILLINGS MT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 91 1938  
MINIMUM TEMPERATURE (F) 47 25 2000  
 
SUNRISE AND SUNSET  
SEPTEMBER 21 2023.....SUNRISE 700 AM MDT SUNSET 714 PM MDT  
SEPTEMBER 22 2023.....SUNRISE 701 AM MDT SUNSET 712 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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