071   
CDUS45 KRIW 310728  
CLIRIW  
  
CLIMATE REPORT   
NATIONAL WEATHER SERVICE RIVERTON WY  
128 AM MDT SUN AUG 31 2025  
   
...............................  
  
   
..THE RIVERTON WY CLIMATE SUMMARY FOR AUGUST 30 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         78   2:28 PM  92    1999  81     -3       83          
                                      2008                             
                                      2013                             
  MINIMUM         52   5:44 AM  42    2020  50      2       45          
  AVERAGE         65                        66     -1       64       
  
PRECIPITATION (IN)                                                      
  YESTERDAY        0.02          0.60        0.02   0.00     0.00       
  MONTH TO DATE    0.52                      0.41   0.11     0.32       
  SINCE JUN 1      1.73                      1.89  -0.16     0.79       
  SINCE JAN 1      6.25                      6.35  -0.10     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        1          
  MONTH TO DATE    3                        22    -19       11          
  SINCE JUN 1     81                       147    -66       51          
  SINCE JUL 1      3                        32    -29       18          
  
 COOLING                                                                
  YESTERDAY        0                         3     -3        0          
  MONTH TO DATE  182                       167     15      183          
  SINCE JUN 1    567                       458    109      538          
  SINCE JAN 1    573                       466    107      538           
...............................................................  
  
WIND (MPH)                                                              
  HIGHEST WIND SPEED    15   HIGHEST WIND DIRECTION    NE (60)          
  HIGHEST GUST SPEED    22   HIGHEST GUST DIRECTION    SE (120)         
  AVERAGE WIND SPEED     8.0                                          
  
SKY COVER                                                               
  POSSIBLE SUNSHINE  MM                                                   
  AVERAGE SKY COVER 0.2                                                   
  
WEATHER CONDITIONS                                                      
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                           
  NO SIGNIFICANT WEATHER WAS OBSERVED.                                    
  
RELATIVE HUMIDITY (PERCENT)  
 HIGHEST    96           5:00 AM                                        
 LOWEST     31           5:00 PM                                        
 AVERAGE    64                                                          
   
......................................................  
  
THE RIVERTON WY CLIMATE NORMALS FOR TODAY  
                         NORMAL    RECORD    YEAR                       
 MAXIMUM TEMPERATURE (F)   81        92      1996                        
                                             2011                       
                                             2022                       
 MINIMUM TEMPERATURE (F)   50        36      2020                        
  
SUNRISE AND SUNSET                                                      
AUGUST 31 2025........SUNRISE   6:38 AM MDT   SUNSET   7:50 PM MDT       
SEPTEMBER  1 2025.....SUNRISE   6:39 AM MDT   SUNSET   7:48 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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