625  
CDUS45 KRIW 200732  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
132 AM MDT FRI SEP 20 2024  
   
...............................
 
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR SEPTEMBER 19 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 55 4:07 PM 72 2009 59 -4 62  
2010  
MINIMUM 32 11:59 PM 22 2003 30 2 31  
AVERAGE 44 44 0 47  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.94 2021 0.05 -0.05 0.00  
MONTH TO DATE 1.43 0.96 0.47 1.88  
SINCE SEP 1 1.43 0.96 0.47 1.88  
SINCE JAN 1 16.62 16.22 0.40 19.91  
 
DEGREE DAYS  
HEATING  
YESTERDAY 21 21 0 18  
MONTH TO DATE 292 337 -45 264  
SINCE SEP 1 292 337 -45 264  
SINCE JUL 1 869 979 -110 797  
 
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 W (280)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 1.0  
 
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 7:00 AM  
LOWEST 47 4:00 PM  
AVERAGE 74  
   
......................................................
 
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 59 69 2012  
2016  
MINIMUM TEMPERATURE (F) 29 20 2000  
 
SUNRISE AND SUNSET  
SEPTEMBER 20 2024.....SUNRISE 7:07 AM MDT SUNSET 7:22 PM MDT  
SEPTEMBER 21 2024.....SUNRISE 7:08 AM MDT SUNSET 7:20 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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