306  
CDUS45 KRIW 110727  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1227 AM MST WED DEC 11 2024  
   
...............................
 
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR DECEMBER 10 2024
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 19 MM 36 2004 24 -5 20  
2014  
MINIMUM 3 MM -24 2009 3 0 12  
AVERAGE 11 13 -2 16  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.32 2015 0.07 -0.07 0.15  
MONTH TO DATE 0.07 0.72 -0.65 1.03  
SINCE DEC 1 0.07 0.72 -0.65 1.03  
SINCE JAN 1 18.45 21.46 -3.01 27.13  
 
DEGREE DAYS  
HEATING  
YESTERDAY 54 52 2 49  
MONTH TO DATE 463 505 -42 448  
SINCE DEC 1 463 505 -42 448  
SINCE JUL 1 3570 4012 -442 3522  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 6 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM  
AVERAGE WIND SPEED 2.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 11:00 PM  
LOWEST 70 4:00 PM  
AVERAGE 77  
   
......................................................
 
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 23 41 2014  
MINIMUM TEMPERATURE (F) 3 -17 2007  
 
SUNRISE AND SUNSET  
DECEMBER 11 2024......SUNRISE 7:49 AM MST SUNSET 4:42 PM MST  
DECEMBER 12 2024......SUNRISE 7:50 AM MST SUNSET 4:42 PM MST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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