162  
CDUS45 KRIW 110730  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
130 AM MDT WED SEP 11 2024  
   
...............................  
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 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 74 3:16 PM 75 2021 63 11 63  
MINIMUM 33 6:01 AM 22 2007 32 1 35  
AVERAGE 54 47 7 49  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.24 2014 0.05 -0.05 0.01  
MONTH TO DATE 0.14 0.50 -0.36 1.20  
SINCE SEP 1 0.14 0.50 -0.36 1.20  
SINCE JAN 1 15.33 15.76 -0.43 19.23  
 
DEGREE DAYS  
HEATING  
YESTERDAY 11 18 -7 16  
MONTH TO DATE 107 163 -56 142  
SINCE SEP 1 107 163 -56 142  
SINCE JUL 1 684 805 -121 675  
 
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 13 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 2.6  
 
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 82 7:00 AM  
LOWEST 14 5:00 PM  
AVERAGE 48  
   
......................................................  
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 63 73 2017  
2022  
MINIMUM TEMPERATURE (F) 31 22 2014  
 
SUNRISE AND SUNSET  
SEPTEMBER 11 2024.....SUNRISE 6:57 AM MDT SUNSET 7:39 PM MDT  
SEPTEMBER 12 2024.....SUNRISE 6:58 AM MDT SUNSET 7:37 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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