842  
CDUS45 KRIW 300727  
CLIRIW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
127 AM MDT FRI MAY 30 2025  
   
...............................
 
 
   
..THE RIVERTON WY CLIMATE SUMMARY FOR MAY 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 4:10 PM 93 2003 72 5 79  
MINIMUM 46 4:54 AM 33 2011 44 2 46  
AVERAGE 62 58 4 63  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.30 0.06 -0.06 0.22  
MONTH TO DATE 1.14 1.81 -0.67 2.29  
SINCE MAR 1 4.02 3.66 0.36 3.19  
SINCE JAN 1 4.52 4.35 0.17 4.64  
 
SNOWFALL (IN)  
YESTERDAY 0.0 5.4 2011 0.0  
MONTH TO DATE 0.9 0.9  
SINCE MAR 1 18.2 4.5  
SINCE JUL 1 30.7 36.7  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 3 8 -5 2  
MONTH TO DATE 319 360 -41 409  
SINCE MAR 1 1809 1919 -110 1846  
SINCE JUL 1 7156 7797 -641 7430  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 3 1 2 0  
SINCE MAR 1 3 1 2 0  
SINCE JAN 1 3 1 2 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION E (100)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 5.5  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 4:00 AM  
LOWEST 27 4:00 PM  
AVERAGE 62  
   
......................................................
 
 
THE RIVERTON WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 90 2002  
MINIMUM TEMPERATURE (F) 44 32 2011  
 
SUNRISE AND SUNSET  
MAY 30 2025...........SUNRISE 5:38 AM MDT SUNSET 8:45 PM MDT  
MAY 31 2025...........SUNRISE 5:38 AM MDT SUNSET 8:46 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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