AFOS product CLICPR
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CDUS45 KRIW 010735
CLICPR

CLIMATE REPORT 
NATIONAL WEATHER SERVICE RIVERTON WY
135 AM MDT WED OCT 01 2025

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

...THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 30 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         77   2:26 PM  88    1980  68      9       65        
  MINIMUM         50   3:28 AM  17    1985  37     13       32        
  AVERAGE         64                        52     12              

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          0.66 1982   0.04  -0.04     0.00     
  MONTH TO DATE    2.55                      0.95   1.60     0.24     
  SINCE SEP 1      2.55                      0.95   1.60     0.24     
  SINCE JAN 1      9.86                      9.78   0.08     7.22     

SNOWFALL (IN)                                                              
  YESTERDAY        0.0           6.6  1982   0.1   -0.1      0.0      
  MONTH TO DATE    0.0                       1.5   -1.5      0.0      
  SINCE SEP 1      0.0                       1.5   -1.5      0.0      
  SINCE JUL 1      0.0                       1.5   -1.5      0.0      
  SNOW DEPTH       0                                                 

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY        1                        13    -12       16        
  MONTH TO DATE  113                       213   -100      102        
  SINCE SEP 1    113                       213   -100      102        
  SINCE JUL 1    123                       258   -135      140        

 COOLING                                                              
  YESTERDAY        0                         0      0        0        
  MONTH TO DATE   17                        30    -13       63        
  SINCE SEP 1     17                        30    -13       63        
  SINCE JAN 1    467                       442     25      538        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    25   HIGHEST WIND DIRECTION    SW (230)       
  HIGHEST GUST SPEED    36   HIGHEST GUST DIRECTION    SW (220)       
  AVERAGE WIND SPEED    15.6                                        


SKY COVER                                                             
  POSSIBLE SUNSHINE  MM                                                 
  AVERAGE SKY COVER 0.1                                                 


WEATHER CONDITIONS                                                    
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                         
  NO SIGNIFICANT WEATHER WAS OBSERVED.                                  


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    69           3:00 AM                                      
 LOWEST     30           2:00 PM                                      
 AVERAGE    50                                                        

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


THE CASPER WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   67        87      1992                      
 MINIMUM TEMPERATURE (F)   36        20      1985                      


SUNRISE AND SUNSET                                                    
OCTOBER  1 2025.......SUNRISE   7:04 AM MDT   SUNSET   6:46 PM MDT     
OCTOBER  2 2025.......SUNRISE   7:05 AM MDT   SUNSET   6:45 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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