057  
CDUS45 KRIW 300732  
CLIRIW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
132 AM MDT SAT AUG 30 2025  
   
...............................
 
 
   
..THE RIVERTON WY CLIMATE SUMMARY FOR AUGUST 29 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1995 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 77 4:39 PM 96 2012 82 -5 76  
MINIMUM 53 5:54 AM 43 2021 50 3 47  
AVERAGE 65 66 -1 62  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.01 0.01 -0.01 0.00  
MONTH TO DATE 0.50 0.39 0.11 0.32  
SINCE JUN 1 1.71 1.87 -0.16 0.79  
SINCE JAN 1 6.23 6.33 -0.10 5.43  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 2020 0.0  
MONTH TO DATE 0.0 0.0  
SINCE JUN 1 0.0 0.0  
SINCE JUL 1 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 2 -2 3  
MONTH TO DATE 3 20 -17 10  
SINCE JUN 1 81 145 -64 50  
SINCE JUL 1 3 30 -27 17  
 
COOLING  
YESTERDAY 0 3 -3 0  
MONTH TO DATE 182 164 18 183  
SINCE JUN 1 567 455 112 538  
SINCE JAN 1 573 463 110 538    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION NE (30)  
AVERAGE WIND SPEED 7.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 6:00 AM  
LOWEST 28 4:00 PM  
AVERAGE 56  
   
......................................................
 
 
THE RIVERTON WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 81 92 1999  
2008  
2013  
MINIMUM TEMPERATURE (F) 50 42 2020  
 
SUNRISE AND SUNSET  
AUGUST 30 2025........SUNRISE 6:36 AM MDT SUNSET 7:51 PM MDT  
AUGUST 31 2025........SUNRISE 6:38 AM MDT SUNSET 7:50 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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