295  
CDUS45 KRIW 211848 CCA  
CLIRIW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
127 AM MDT TUE OCT 21 2025  
   
...............................
 
 
   
..THE RIVERTON WY CLIMATE SUMMARY FOR OCTOBER 20 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 51 2:43 PM 76 2003 56 -5 62  
MINIMUM 37 2246 PM 21 1996 30 7 29  
AVERAGE 44 43 1 46  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.20 0.02 -0.02 0.00  
MONTH TO DATE 1.43 0.65 0.78 0.11  
SINCE SEP 1 2.42 1.42 1.00 0.18  
SINCE JAN 1 8.67 7.78 0.89 5.61  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.9 1996 0.0  
MONTH TO DATE T T  
SINCE SEP 1 T T  
SINCE JUL 1 T T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 21 22 -1 19  
MONTH TO DATE 301 356 -55 199  
SINCE SEP 1 377 561 -184 285  
SINCE JUL 1 401 597 -196 303  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 1  
SINCE SEP 1 37 31 6 68  
SINCE JAN 1 611 499 112 610    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 40 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 53 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 23.8  
 
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 44 10:00 PM  
LOWEST 23 2:00 PM  
AVERAGE 34  
   
......................................................
 
 
THE RIVERTON WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 55 78 2003  
MINIMUM TEMPERATURE (F) 29 15 1996  
 
SUNRISE AND SUNSET  
OCTOBER 21 2025.......SUNRISE 7:35 AM MDT SUNSET 6:21 PM MDT  
OCTOBER 22 2025.......SUNRISE 7:36 AM MDT SUNSET 6:19 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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