AFOS product CLICPR
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CDUS45 KRIW 090730
CLICPR

CLIMATE REPORT 
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT TUE SEP 09 2025

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

...THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 8 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         85  12:54 PM  92    1994  80      5       90        
                                      1998                           
                                      2005                           
  MINIMUM         50  11:59 PM  29    1962  45      5       43        
                                      2020                           
  AVERAGE         68                        62      6              

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          0.84 1989   0.03  -0.03     0.00     
  MONTH TO DATE    0.01                      0.19  -0.18     0.15     
  SINCE SEP 1      0.01                      0.19  -0.18     0.15     
  SINCE JAN 1      7.32                      9.02  -1.70     7.13     

SNOWFALL (IN)                                                              
  YESTERDAY        0.0           5.2  2020   0.0    0.0      0.0      
  MONTH TO DATE    0.0                       0.1   -0.1      0.0      
  SINCE SEP 1      0.0                       0.1   -0.1      0.0      
  SINCE JUL 1      0.0                       0.1   -0.1      0.0      
  SNOW DEPTH       0                                                 

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY        0                         4     -4        0        
  MONTH TO DATE   30                        28      2        7        
  SINCE SEP 1     30                        28      2        7        
  SINCE JUL 1     40                        73    -33       45        

 COOLING                                                              
  YESTERDAY        3                         2      1        2        
  MONTH TO DATE    7                        17    -10       31        
  SINCE SEP 1      7                        17    -10       31        
  SINCE JAN 1    457                       429     28      506        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    25   HIGHEST WIND DIRECTION    NW (310)       
  HIGHEST GUST SPEED    34   HIGHEST GUST DIRECTION    NW (310)       
  AVERAGE WIND SPEED     9.5                                        


SKY COVER                                                             
  POSSIBLE SUNSHINE  MM                                                 
  AVERAGE SKY COVER 0.0                                                 


WEATHER CONDITIONS                                                    
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                         
  HAZE                                                                


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    62           1:00 AM                                      
 LOWEST     12           1:00 PM                                      
 AVERAGE    37                                                        

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


THE CASPER WY CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   79        95      2021                      
 MINIMUM TEMPERATURE (F)   45        24      2020                      


SUNRISE AND SUNSET                                                    
SEPTEMBER  9 2025.....SUNRISE   6:39 AM MDT   SUNSET   7:26 PM MDT     
SEPTEMBER 10 2025.....SUNRISE   6:41 AM MDT   SUNSET   7:24 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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