351  
CDUS45 KRIW 120726  
CLIRIW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
126 AM MDT TUE AUG 12 2025  
   
...............................
 
 
   
..THE RIVERTON WY CLIMATE SUMMARY FOR AUGUST 11 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 85 2:43 PM 98 2018 87 -2 81  
MINIMUM 51 3:04 AM 47 2004 55 -4 50  
AVERAGE 68 71 -3 66  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.30 0.01 -0.01 0.00  
MONTH TO DATE T 0.16 -0.16 0.04  
SINCE JUN 1 1.21 1.64 -0.43 0.51  
SINCE JAN 1 5.73 6.10 -0.37 5.15  
 
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 0 0 0  
MONTH TO DATE 2 0 2 1  
SINCE JUN 1 80 125 -45 41  
SINCE JUL 1 2 10 -8 8  
 
COOLING  
YESTERDAY 3 6 -3 1  
MONTH TO DATE 71 81 -10 85  
SINCE JUN 1 456 372 84 440  
SINCE JAN 1 462 380 82 440    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION E (90)  
AVERAGE WIND SPEED 7.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 59 5:00 AM  
LOWEST 19 5:00 PM  
AVERAGE 39  
   
......................................................
 
 
THE RIVERTON WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 97 1996  
2007  
2018  
MINIMUM TEMPERATURE (F) 55 47 2016  
 
SUNRISE AND SUNSET  
AUGUST 12 2025........SUNRISE 6:17 AM MDT SUNSET 8:20 PM MDT  
AUGUST 13 2025........SUNRISE 6:18 AM MDT SUNSET 8:19 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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