324  
CDUS45 KRIW 290730  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
130 AM MDT FRI AUG 29 2025  
   
...............................  
 
   
..THE CASPER WY CLIMATE SUMMARY FOR AUGUST 28 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 81 3:45 PM 95 1995 84 -3 92  
2012  
MINIMUM 54 5:56 AM 34 2004 48 6 44  
AVERAGE 68 66 2  
 
PRECIPITATION (IN)  
YESTERDAY 0.03 0.23 1964 0.02 0.01 0.00  
MONTH TO DATE 0.70 0.73 -0.03 0.39  
SINCE JUN 1 2.37 3.26 -0.89 1.72  
SINCE JAN 1 7.29 8.77 -1.48 6.98  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 2020 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE JUN 1 0.0 0.1 -0.1 0.0  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 2 -2 0  
MONTH TO DATE 4 21 -17 10  
SINCE JUN 1 100 161 -61 80  
SINCE JUL 1 9 35 -26 26  
 
COOLING  
YESTERDAY 3 3 0 3  
MONTH TO DATE 146 147 -1 182  
SINCE JUN 1 448 398 50 470  
SINCE JAN 1 448 402 46 473    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION SW (240)  
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 7.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 5:00 AM  
LOWEST 31 4:00 PM  
AVERAGE 66  
   
......................................................  
 
THE CASPER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 83 97 2012  
MINIMUM TEMPERATURE (F) 48 36 2024  
 
SUNRISE AND SUNSET  
AUGUST 29 2025........SUNRISE 6:28 AM MDT SUNSET 7:45 PM MDT  
AUGUST 30 2025........SUNRISE 6:29 AM MDT SUNSET 7:43 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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