759  
CDUS45 KRIW 280045  
CLIRIW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
645 PM MDT WED AUG 27 2025  
   
...............................
 
 
   
..THE RIVERTON WY CLIMATE SUMMARY FOR AUGUST 27 2025
 
 
VALID TODAY AS OF 0600 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 70 1:21 PM 95 2011 83 -13 82  
MINIMUM 58 8:13 AM 44 2024 51 7 44  
AVERAGE 64 67 -3 63  
 
PRECIPITATION (IN)  
TODAY 0.40R 0.07 2014 0.01 0.39 0.00  
MONTH TO DATE 0.41 0.36 0.05 0.32  
SINCE JUN 1 1.62 1.84 -0.22 0.79  
SINCE JAN 1 6.14 6.30 -0.16 5.43  
 
SNOWFALL (IN)  
TODAY MM 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 MM  
 
DEGREE DAYS  
HEATING  
TODAY 1 2 -1 2  
MONTH TO DATE 3 16 -13 7  
SINCE JUN 1 81 141 -60 47  
SINCE JUL 1 3 26 -23 14  
 
COOLING  
TODAY 0 3 -3 0  
MONTH TO DATE 182 158 24 178  
SINCE JUN 1 567 449 118 533  
SINCE JAN 1 573 457 116 533    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (340)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION SE (130)  
AVERAGE WIND SPEED 5.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96  
LOWEST 61  
AVERAGE 79  
   
......................................................
 
 
THE RIVERTON WY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 94 2012  
MINIMUM TEMPERATURE (F) 51 43 2004  
2019  
 
SUNRISE AND SUNSET  
AUGUST 27 2025........SUNRISE 6:33 AM MDT SUNSET 7:56 PM MDT  
AUGUST 28 2025........SUNRISE 6:34 AM MDT SUNSET 7:55 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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