352  
CDUS45 KRIW 200029  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
629 PM MDT TUE SEP 19 2023  
   
...............................
 
 
   
..THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 19 2023
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1939 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 79 3:06 PM 92 2010 74 5 85  
MINIMUM 49 3:46 AM 23 1965 41 8 47  
AVERAGE 64 58 6 66  
 
PRECIPITATION (IN)  
TODAY T 0.47 1948 0.03 -0.03 T  
MONTH TO DATE 0.54 0.51 0.03 0.62  
SINCE SEP 1 0.54 0.51 0.03 0.62  
SINCE JAN 1 13.02 9.34 3.68 11.01  
 
SNOWFALL (IN)  
TODAY 0.0 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.5 -0.5 0.0  
SINCE SEP 1 0.0 0.5 -0.5 0.0  
SINCE JUL 1 0.0 0.5 -0.5 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 1 8 -7 0  
MONTH TO DATE 57 97 -40 77  
SINCE SEP 1 57 97 -40 77  
SINCE JUL 1 110 142 -32 79  
 
COOLING  
TODAY 0 1 -1 1  
MONTH TO DATE 19 29 -10 68  
SINCE SEP 1 19 29 -10 68  
SINCE JAN 1 341 441 -100 544    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 10.2  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 63  
LOWEST 19  
AVERAGE 41  
   
......................................................
 
 
THE CASPER WY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 89 1956  
MINIMUM TEMPERATURE (F) 41 16 1983  
 
SUNRISE AND SUNSET  
SEPTEMBER 19 2023.....SUNRISE 6:50 AM MDT SUNSET 7:09 PM MDT  
SEPTEMBER 20 2023.....SUNRISE 6:51 AM MDT SUNSET 7:07 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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