533  
CDUS45 KRIW 310727  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
127 AM MDT THU JUL 31 2025  
   
...............................  
 
   
..THE CASPER WY CLIMATE SUMMARY FOR JULY 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 84 3:20 PM 101 2006 90 -6 95  
MINIMUM 53 5:49 AM 38 1971 55 -2 52  
AVERAGE 69 72 -3  
 
PRECIPITATION (IN)  
YESTERDAY 0.18 0.84 1985 0.04 0.14 0.00  
MONTH TO DATE 1.13 1.16 -0.03 0.53  
SINCE JUN 1 1.66 2.50 -0.84 1.33  
SINCE JAN 1 6.58 8.01 -1.43 6.59  
 
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 MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 5 9 -4 16  
SINCE JUN 1 96 135 -39 70  
SINCE JUL 1 5 9 -4 16  
 
COOLING  
YESTERDAY 4 8 -4 9  
MONTH TO DATE 223 195 28 182  
SINCE JUN 1 298 246 52 285  
SINCE JAN 1 298 250 48 288    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 29 HIGHEST WIND DIRECTION N (360)  
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION N (350)  
AVERAGE WIND SPEED 9.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 6:00 AM  
LOWEST 31 3:00 PM  
AVERAGE 64  
   
......................................................  
 
THE CASPER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 90 99 1988  
MINIMUM TEMPERATURE (F) 55 42 1968  
 
SUNRISE AND SUNSET  
JULY 31 2025..........SUNRISE 5:56 AM MDT SUNSET 8:27 PM MDT  
AUGUST 1 2025........SUNRISE 5:57 AM MDT SUNSET 8:26 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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