AFOS product CLICPR
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146 
CDUS45 KRIW 250727
CLICPR

CLIMATE REPORT 
NATIONAL WEATHER SERVICE RIVERTON WY
127 AM MDT THU SEP 25 2025

...................................

...THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 24 2025...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2025


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 YESTERDAY                                                           
  MAXIMUM         73   3:16 PM  87    1966  71      2       79        
                                      2020                           
  MINIMUM         44   4:39 AM  22    1984  39      5       46        
  AVERAGE         59                        55      4              

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          0.62 1986   0.04  -0.04     0.00     
  MONTH TO DATE    2.49                      0.70   1.79     0.24     
  SINCE SEP 1      2.49                      0.70   1.79     0.24     
  SINCE JAN 1      9.80                      9.53   0.27     7.22     

SNOWFALL (IN)                                                              
  YESTERDAY        0.0           2.9  1984   0.1   -0.1      0.0      
  MONTH TO DATE    0.0                       0.9   -0.9      0.0      
  SINCE SEP 1      0.0                       0.9   -0.9      0.0      
  SINCE JUL 1      0.0                       0.9   -0.9      0.0      
  SNOW DEPTH      MM                                                  

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY        6                        10     -4        2        
  MONTH TO DATE   99                       143    -44       85        
  SINCE SEP 1     99                       143    -44       85        
  SINCE JUL 1    109                       188    -79      123        

 COOLING                                                              
  YESTERDAY        0                         0      0        0        
  MONTH TO DATE   17                        29    -12       51        
  SINCE SEP 1     17                        29    -12       51        
  SINCE JAN 1    467                       441     26      526        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION    SW (210)       
  HIGHEST GUST SPEED    29   HIGHEST GUST DIRECTION    SW (210)       
  AVERAGE WIND SPEED    11.6                                        


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    93           1:00 AM                                      
 LOWEST     32           2:00 PM                                      
 AVERAGE    63                                                        

..........................................................


THE CASPER WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   71        90      2014                      
 MINIMUM TEMPERATURE (F)   39        20      1984                      


SUNRISE AND SUNSET                                                    
SEPTEMBER 25 2025.....SUNRISE   6:57 AM MDT   SUNSET   6:57 PM MDT     
SEPTEMBER 26 2025.....SUNRISE   6:58 AM MDT   SUNSET   6:55 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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