160  
CDUS45 KRIW 090735  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1235 AM MST MON DEC 09 2024  
   
...............................  
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR DECEMBER 8 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 30 1:21 AM 38 2014 24 6 23  
MINIMUM 5 11:59 PM -25 2013 4 1 4  
AVERAGE 18 14 4 14  
 
PRECIPITATION (IN)  
YESTERDAY 0.06 0.55 2019 0.08 -0.02 0.23  
MONTH TO DATE 0.06 0.58 -0.52 0.88  
SINCE DEC 1 0.06 0.58 -0.52 0.88  
SINCE JAN 1 18.44 21.32 -2.88 26.98  
 
DEGREE DAYS  
HEATING  
YESTERDAY 47 51 -4 51  
MONTH TO DATE 356 402 -46 341  
SINCE DEC 1 356 402 -46 341  
SINCE JUL 1 3463 3909 -446 3415  
 
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 16 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 5.8  
 
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 88 9:00 PM  
LOWEST 57 2:00 PM  
AVERAGE 73  
   
......................................................  
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 24 39 2014  
2020  
MINIMUM TEMPERATURE (F) 4 -28 2013  
 
SUNRISE AND SUNSET  
DECEMBER 9 2024......SUNRISE 7:47 AM MST SUNSET 4:42 PM MST  
DECEMBER 10 2024......SUNRISE 7:48 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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