217  
CDUS45 KBYZ 220942  
CLIBIL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BILLINGS MT  
342 AM MDT THU MAY 22 2025  
   
...............................
 
 
   
..THE BILLINGS MT CLIMATE SUMMARY FOR MAY 21 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 63 257 PM 91 1980 69 -6 63  
MINIMUM 45 222 AM 31 1963 46 -1 41  
2021  
AVERAGE 54 57 -3 52  
 
PRECIPITATION (IN)  
YESTERDAY T 2.83 1952 0.09 -0.09 T  
MONTH TO DATE 2.46 1.48 0.98 1.69  
SINCE OCT 1 10.96 7.76 3.20 7.42  
SINCE JAN 1 9.66 5.22 4.44 5.03  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 1999 0.0 0.0 0.0  
2016  
2021  
MONTH TO DATE T 0.8 -0.8 T  
SINCE MAR 1 16.2 16.5 -0.3 9.2  
SINCE JUL 1 64.2 57.3 6.9 35.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 11 8 3 13  
MONTH TO DATE 183 245 -62 261  
SINCE MAR 1 1402 1661 -259 1601  
SINCE JUL 1 6165 6596 -431 5976  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 10 2 8 1  
SINCE MAR 1 10 3 7 1  
SINCE JAN 1 10 3 7 1    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 10.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 73 300 AM  
LOWEST 23 400 PM  
AVERAGE 48  
   
......................................................
 
 
THE BILLINGS MT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 94 1980  
MINIMUM TEMPERATURE (F) 46 31 2021  
 
SUNRISE AND SUNSET  
MAY 22 2025...........SUNRISE 535 AM MDT SUNSET 847 PM MDT  
MAY 23 2025...........SUNRISE 534 AM MDT SUNSET 848 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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