569  
CDUS45 KRIW 190727  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1227 AM MST THU DEC 19 2024  
   
...............................
 
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR DECEMBER 18 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 31 2:02 PM 34 2013 23 8 30  
MINIMUM 18 11:59 PM -23 2016 2 16 2  
AVERAGE 25 12 13 16  
 
PRECIPITATION (IN)  
YESTERDAY 0.05 0.35 2015 0.08 -0.03 0.00  
MONTH TO DATE 0.58 1.32 -0.74 1.03  
SINCE DEC 1 0.58 1.32 -0.74 1.03  
SINCE JAN 1 18.96 22.06 -3.10 27.13  
 
DEGREE DAYS  
HEATING  
YESTERDAY 40 53 -13 49  
MONTH TO DATE 825 923 -98 836  
SINCE DEC 1 825 923 -98 836  
SINCE JUL 1 3932 4430 -498 3910  
 
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 15 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 5.2  
 
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 92 7:00 AM  
LOWEST 71 11:00 PM  
AVERAGE 82  
   
......................................................
 
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 23 39 2023  
MINIMUM TEMPERATURE (F) 2 -20 2012  
 
SUNRISE AND SUNSET  
DECEMBER 19 2024......SUNRISE 7:54 AM MST SUNSET 4:44 PM MST  
DECEMBER 20 2024......SUNRISE 7:55 AM MST SUNSET 4:44 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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