323  
CDUS45 KRIW 300745  
CLIP60  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
145 AM MDT WED JUL 30 2025  
   
...............................
 
 
   
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR JULY 29 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 77 11:58 AM 82 2006 74 3 74  
MINIMUM 43 5:41 AM 28 2015 40 3 31  
AVERAGE 60 57 3 53  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.60 2017 0.04 -0.04 0.00  
MONTH TO DATE 0.49 1.42 -0.93 0.43  
SINCE JUN 1 1.14 3.80 -2.66 1.67  
SINCE JAN 1 10.37 13.83 -3.46 13.87  
 
DEGREE DAYS  
HEATING  
YESTERDAY 5 8 -3 12  
MONTH TO DATE 216 278 -62 239  
SINCE JUN 1 658 816 -158 668  
SINCE JUL 1 216 278 -62 239  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 1 0 1 0  
SINCE JUN 1 1 0 1 0  
SINCE JAN 1 1 0 1 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 2.2  
 
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 89 5:00 AM  
LOWEST 16 2:00 PM  
AVERAGE 53  
   
......................................................
 
 
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 82 2000  
2012  
MINIMUM TEMPERATURE (F) 40 29 2009  
 
SUNRISE AND SUNSET  
JULY 30 2025..........SUNRISE 6:07 AM MDT SUNSET 8:49 PM MDT  
JULY 31 2025..........SUNRISE 6:08 AM MDT SUNSET 8:48 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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