723  
CDUS45 KRIW 260727  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
127 AM MDT THU SEP 26 2024  
   
...............................
 
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 25 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 73 2:20 PM 74 2015 56 17 65  
MINIMUM 33 6:28 AM 20 2000 28 5 29  
2018  
AVERAGE 53 42 11 47  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.39 2013 0.05 -0.05 0.00  
MONTH TO DATE 1.43 1.29 0.14 3.62  
SINCE SEP 1 1.43 1.29 0.14 3.62  
SINCE JAN 1 16.62 16.55 0.07 21.65  
 
DEGREE DAYS  
HEATING  
YESTERDAY 12 23 -11 18  
MONTH TO DATE 399 468 -69 398  
SINCE SEP 1 399 468 -69 398  
SINCE JUL 1 976 1110 -134 931  
 
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 9 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 1.5  
 
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 1:00 AM  
LOWEST 27 3:00 PM  
AVERAGE 60  
   
......................................................
 
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 56 73 2010  
2015  
MINIMUM TEMPERATURE (F) 28 20 2018  
 
SUNRISE AND SUNSET  
SEPTEMBER 26 2024.....SUNRISE 7:14 AM MDT SUNSET 7:10 PM MDT  
SEPTEMBER 27 2024.....SUNRISE 7:15 AM MDT SUNSET 7:09 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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