306  
CDUS45 KRIW 270736  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
136 AM MDT FRI SEP 27 2024  
   
...............................
 
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 26 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 68 2:54 PM 73 2010 56 12 67  
2015  
MINIMUM 33 6:36 AM 20 2018 28 5 29  
AVERAGE 51 42 9 48  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.20 2020 0.06 -0.06 0.00  
MONTH TO DATE 1.43 1.35 0.08 3.62  
SINCE SEP 1 1.43 1.35 0.08 3.62  
SINCE JAN 1 16.62 16.61 0.01 21.65  
 
DEGREE DAYS  
HEATING  
YESTERDAY 14 23 -9 17  
MONTH TO DATE 413 491 -78 415  
SINCE SEP 1 413 491 -78 415  
SINCE JUL 1 990 1133 -143 948  
 
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 14 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 3.4  
 
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 85 6:00 AM  
LOWEST 22 3:00 PM  
AVERAGE 54  
   
......................................................
 
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 55 73 2001  
MINIMUM TEMPERATURE (F) 28 24 2000  
2020  
 
SUNRISE AND SUNSET  
SEPTEMBER 27 2024.....SUNRISE 7:15 AM MDT SUNSET 7:09 PM MDT  
SEPTEMBER 28 2024.....SUNRISE 7:17 AM MDT SUNSET 7:07 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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