998  
CDUS45 KRIW 170736  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1236 AM MST SUN DEC 17 2023  
   
...............................
 
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR DECEMBER 16 2023
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 30 3:01 PM 37 2018 23 7 15  
MINIMUM 5 5:25 AM -18 2016 2 3 -15  
AVERAGE 18 12 6 0  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.24 2017 0.08 -0.08 0.00  
MONTH TO DATE 1.03 1.17 -0.14 1.74  
SINCE DEC 1 1.03 1.17 -0.14 1.74  
SINCE JAN 1 27.13 21.91 5.22 26.52  
 
DEGREE DAYS  
HEATING  
YESTERDAY 47 52 -5 65  
MONTH TO DATE 740 817 -77 827  
SINCE DEC 1 740 817 -77 827  
SINCE JUL 1 3814 4324 -510 4047  
 
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 NW (310)  
HIGHEST GUST SPEED 9 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 0.9  
 
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 100 12:00 PM  
LOWEST 69 3:00 PM  
AVERAGE 85  
   
......................................................
 
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 23 38 2018  
MINIMUM TEMPERATURE (F) 2 -28 2016  
 
SUNRISE AND SUNSET  
DECEMBER 17 2023......SUNRISE 7:53 AM MST SUNSET 4:43 PM MST  
DECEMBER 18 2023......SUNRISE 7:53 AM MST SUNSET 4:43 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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