275  
CDUS45 KBYZ 311740  
CLIBIL  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BILLINGS MT  
1140 AM MDT WED MAY 31 2023  
   
...............................
 
 
   
..THE BILLINGS MT CLIMATE SUMMARY FOR MAY 31 2023
 
 
VALID AS OF 1100 AM 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 74 959 AM 92 1936 72 2 61  
1940  
2020  
MINIMUM 54 447 AM 32 1951 49 5 45  
1982  
AVERAGE 64 60 4 53  
 
PRECIPITATION (IN)  
TODAY 0.00 0.90 1951 0.09 -0.09 0.00  
MONTH TO DATE 2.84 2.36 0.48 2.08  
SINCE OCT 1 8.32 8.64 -0.32 9.29  
SINCE JAN 1 6.27 6.10 0.17 6.53  
 
SNOWFALL (IN)  
TODAY MM 4.0 1951 0.0 MM 0.0  
MONTH TO DATE T 0.9 -0.9 T  
SINCE MAR 1 18.6 16.6 2.0 21.5  
SINCE JUL 1 56.1 57.4 -1.3 62.8  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 1 6 -5 12  
MONTH TO DATE 158 314 -156 362  
SINCE MAR 1 1884 1730 154 1919  
SINCE JUL 1 6957 6665 292 6479  
 
COOLING  
TODAY 0 1 -1 0  
MONTH TO DATE 25 14 11 4  
SINCE MAR 1 25 15 10 4  
SINCE JAN 1 25 15 10 4    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 6.9  
 
SKY COVER  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 80 500 AM  
LOWEST 43 1000 AM  
AVERAGE 62  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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