802   
CDUS45 KRIW 010728  
CLIRIW  
  
CLIMATE REPORT   
NATIONAL WEATHER SERVICE RIVERTON WY  
128 AM MDT MON SEP 01 2025  
   
...............................  
  
   
..THE RIVERTON WY CLIMATE SUMMARY FOR AUGUST 31 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         82        MM  92    1996  81      1       87          
                                      2011                             
                                      2022                             
  MINIMUM         49        MM  36    2020  50     -1       51          
  AVERAGE         66                        65      1       69       
  
PRECIPITATION (IN)                                                      
  YESTERDAY        0.00          0.05        0.01  -0.01     0.00       
  MONTH TO DATE    0.52                      0.42   0.10     0.32       
  SINCE JUN 1      1.73                      1.90  -0.17     0.79       
  SINCE JAN 1      6.25                      6.36  -0.11     5.43       
  
SNOWFALL (IN)                                                                
  YESTERDAY        0.0           0.0  2020                   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       0                                                   
  
DEGREE DAYS                                                             
 HEATING                                                                
  YESTERDAY        0                         2     -2        0          
  MONTH TO DATE    3                        24    -21       11          
  SINCE JUN 1     81                       149    -68       51          
  SINCE JUL 1      3                        34    -31       18          
  
 COOLING                                                                
  YESTERDAY        1                         3     -2        4          
  MONTH TO DATE  183                       169     14      187          
  SINCE JUN 1    568                       460    108      542          
  SINCE JAN 1    574                       468    106      542           
...............................................................  
  
WIND (MPH)                                                              
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION     W (280)         
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION    NE (60)          
  AVERAGE WIND SPEED     7.2                                          
  
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    86           5:00 AM                                        
 LOWEST     16           2:00 PM                                        
 AVERAGE    51                                                          
   
......................................................  
  
THE RIVERTON WY CLIMATE NORMALS FOR TODAY  
                         NORMAL    RECORD    YEAR                       
 MAXIMUM TEMPERATURE (F)   81        97      2022                        
 MINIMUM TEMPERATURE (F)   50        38      2008                        
                                             2020                       
  
SUNRISE AND SUNSET                                                      
SEPTEMBER  1 2025.....SUNRISE   6:39 AM MDT   SUNSET   7:48 PM MDT       
SEPTEMBER  2 2025.....SUNRISE   6:40 AM MDT   SUNSET   7:46 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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