563  
CDUS45 KRIW 090045  
CLIRIW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
545 PM MST MON DEC 08 2025  
   
...............................  
 
   
..THE RIVERTON WY CLIMATE SUMMARY FOR DECEMBER 8 2025  
 
VALID TODAY AS OF 0500 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 48 1:41 PM 51 2021 32 16 49  
MINIMUM 25 7:21 AM -18 2005 10 15 23  
AVERAGE 37 21 16 36  
 
PRECIPITATION (IN)  
TODAY 0.00 0.08 2007 0.01 -0.01 0.00  
MONTH TO DATE 0.14 0.08 0.06 0.00  
SINCE DEC 1 0.14 0.08 0.06 0.00  
SINCE JAN 1 9.10 8.38 0.72 6.22  
 
SNOWFALL (IN)  
TODAY MM 0.0  
MONTH TO DATE 1.5 0.0  
SINCE DEC 1 1.5 0.0  
SINCE JUL 1 3.5 3.8  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 28 44 -16 29  
MONTH TO DATE 293 344 -51 272  
SINCE DEC 1 293 344 -51 272  
SINCE JUL 1 1736 2241 -505 1789  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 611 499 112 610    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 45 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 12.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 74  
LOWEST 33  
AVERAGE 54  
   
......................................................  
 
THE RIVERTON WY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 32 56 2015  
MINIMUM TEMPERATURE (F) 9 -21 2009  
 
SUNRISE AND SUNSET  
DECEMBER 8 2025......SUNRISE 7:33 AM MST SUNSET 4:39 PM MST  
DECEMBER 9 2025......SUNRISE 7:34 AM MST SUNSET 4:39 PM MST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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