093  
CDUS45 KRIW 120732  
CLIRIW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
132 AM MDT TUE MAY 12 2026  
   
...............................
 
 
   
..THE RIVERTON WY CLIMATE SUMMARY FOR MAY 11 2026
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1995 TO 2026  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 86R 1:51 PM 83 2007 65 21 80  
MINIMUM 49 4:28 AM 24 1999 38 11 46  
AVERAGE 68 51 17 63  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.50 0.06 -0.06 T  
MONTH TO DATE 0.09 0.68 -0.59 0.53  
SINCE MAR 1 0.66 2.53 -1.87 3.41  
SINCE JAN 1 0.93 3.22 -2.29 3.91  
 
SNOWFALL (IN)  
YESTERDAY 0.0 11.1 2010 0.0  
MONTH TO DATE 0.5 0.9  
SINCE MAR 1 8.1 18.2  
SINCE JUL 1 16.1 30.7  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 14 -14 2  
MONTH TO DATE 141 172 -31 133  
SINCE MAR 1 1266 1731 -465 1623  
SINCE JUL 1 5559 7609 -2050 6970  
 
COOLING  
YESTERDAY 3 0 3 0  
MONTH TO DATE 3 0 3 0  
SINCE MAR 1 3 0 3 0  
SINCE JAN 1 3 0 3 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 47 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 11.6  
 
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 36 4:00 AM  
LOWEST 7 1:00 PM  
AVERAGE 22  
   
......................................................
 
 
THE RIVERTON WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 65 87 2007  
MINIMUM TEMPERATURE (F) 38 29 2004  
2014  
 
SUNRISE AND SUNSET  
MAY 12 2026...........SUNRISE 5:54 AM MDT SUNSET 8:27 PM MDT  
MAY 13 2026...........SUNRISE 5:52 AM MDT SUNSET 8:29 PM MDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab WY Page Main Text Page