755  
CDUS45 KRIW 180731  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
131 AM MDT WED JUN 18 2025  
   
...............................
 
 
   
..THE CASPER WY CLIMATE SUMMARY FOR JUNE 17 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 76 1:13 PM 97 1940 80 -4 86  
2022  
MINIMUM 46 11:38 PM 34 2000 46 0 49  
AVERAGE 61 63 -2  
 
PRECIPITATION (IN)  
YESTERDAY T 1.25 1998 0.04 -0.04 0.06  
MONTH TO DATE 0.52 0.83 -0.31 0.55  
SINCE JUN 1 0.52 0.83 -0.31 0.55  
SINCE JAN 1 5.44 6.34 -0.90 5.81  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 2000 0.0 0.0 0.0  
2001  
2002  
MONTH TO DATE 0.0 0.1 -0.1 0.0  
SINCE JUN 1 0.0 0.1 -0.1 0.0  
SINCE JUL 1 26.5 71.8 -45.3 42.5  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 4 4 0 0  
MONTH TO DATE 73 96 -23 24  
SINCE JUN 1 73 96 -23 24  
SINCE JUL 1 7004 7456 -452 6971  
 
COOLING  
YESTERDAY 0 2 -2 3  
MONTH TO DATE 29 18 11 40  
SINCE JUN 1 29 18 11 40  
SINCE JAN 1 29 22 7 43    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION N (10)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION N (20)  
AVERAGE WIND SPEED 6.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
HAZE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 3:00 AM  
LOWEST 44 12:00 PM  
AVERAGE 71  
   
......................................................
 
 
THE CASPER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 81 97 1994  
MINIMUM TEMPERATURE (F) 46 31 2020  
 
SUNRISE AND SUNSET  
JUNE 18 2025..........SUNRISE 5:27 AM MDT SUNSET 8:48 PM MDT  
JUNE 19 2025..........SUNRISE 5:27 AM MDT SUNSET 8:48 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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