003  
CDUS45 KRIW 170729  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
129 AM MDT TUE SEP 17 2024  
   
...............................
 
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 16 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 66 12:05 PM 77 2000 61 5 67  
MINIMUM 37 4:01 AM 27 2007 30 7 30  
2016  
2017  
AVERAGE 52 45 7 49  
 
PRECIPITATION (IN)  
YESTERDAY 0.06 0.38 2022 0.05 0.01 0.00  
MONTH TO DATE 0.60 0.80 -0.20 1.88  
SINCE SEP 1 0.60 0.80 -0.20 1.88  
SINCE JAN 1 15.79 16.06 -0.27 19.91  
 
DEGREE DAYS  
HEATING  
YESTERDAY 13 20 -7 16  
MONTH TO DATE 220 276 -56 246  
SINCE SEP 1 220 276 -56 246  
SINCE JUL 1 797 918 -121 779  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION S (160)  
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION S (160)  
AVERAGE WIND SPEED 1.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85 4:00 AM  
LOWEST 35 12:00 PM  
AVERAGE 60  
   
......................................................
 
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 60 73 2009  
2020  
MINIMUM TEMPERATURE (F) 30 24 2003  
2017  
 
SUNRISE AND SUNSET  
SEPTEMBER 17 2024.....SUNRISE 7:04 AM MDT SUNSET 7:27 PM MDT  
SEPTEMBER 18 2024.....SUNRISE 7:05 AM MDT SUNSET 7:25 PM MDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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