802  
CDUS45 KRIW 010728  
CLIRIW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
128 AM MDT MON SEP 01 2025  
   
...............................  
 
   
..THE RIVERTON WY CLIMATE SUMMARY FOR AUGUST 31 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 82 MM 92 1996 81 1 87  
2011  
2022  
MINIMUM 49 MM 36 2020 50 -1 51  
AVERAGE 66 65 1 69  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.05 0.01 -0.01 0.00  
MONTH TO DATE 0.52 0.42 0.10 0.32  
SINCE JUN 1 1.73 1.90 -0.17 0.79  
SINCE JAN 1 6.25 6.36 -0.11 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 0  
MONTH TO DATE 3 24 -21 11  
SINCE JUN 1 81 149 -68 51  
SINCE JUL 1 3 34 -31 18  
 
COOLING  
YESTERDAY 1 3 -2 4  
MONTH TO DATE 183 169 14 187  
SINCE JUN 1 568 460 108 542  
SINCE JAN 1 574 468 106 542    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 7.2  
 
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 86 5:00 AM  
LOWEST 16 2:00 PM  
AVERAGE 51  
   
......................................................  
 
THE RIVERTON WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 81 97 2022  
MINIMUM TEMPERATURE (F) 50 38 2008  
2020  
 
SUNRISE AND SUNSET  
SEPTEMBER 1 2025.....SUNRISE 6:39 AM MDT SUNSET 7:48 PM MDT  
SEPTEMBER 2 2025.....SUNRISE 6:40 AM MDT SUNSET 7:46 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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