755  
CDUS45 KRIW 160732  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
132 AM MDT FRI MAY 16 2025  
   
...............................
 
 
   
..THE CASPER WY CLIMATE SUMMARY FOR MAY 15 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 62 2:24 PM 87 1984 66 -4 63  
MINIMUM 38 11:49 PM 27 1983 37 1 40  
AVERAGE 50 52 -2  
 
PRECIPITATION (IN)  
YESTERDAY 0.05 1.52 1991 0.08 -0.03 0.54  
MONTH TO DATE 0.41 1.06 -0.65 1.85  
SINCE MAR 1 3.33 3.31 0.02 3.64  
SINCE JAN 1 4.05 4.36 -0.31 4.67  
 
SNOWFALL (IN)  
YESTERDAY 0.0 1.4 1976 0.1 -0.1 0.0  
MONTH TO DATE 0.3 2.0 -1.7 3.9  
SINCE MAR 1 16.0 22.8 -6.8 13.2  
SINCE JUL 1 26.5 71.1 -44.6 42.5  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 15 13 2 13  
MONTH TO DATE 185 245 -60 273  
SINCE MAR 1 1734 1834 -100 1799  
SINCE JUL 1 6749 7196 -447 6754  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 33 HIGHEST WIND DIRECTION SW (240)  
HIGHEST GUST SPEED 44 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 14.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 12:00 AM  
LOWEST 27 1:00 PM  
AVERAGE 58  
   
......................................................
 
 
THE CASPER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 67 88 2012  
MINIMUM TEMPERATURE (F) 37 25 2009  
 
SUNRISE AND SUNSET  
MAY 16 2025...........SUNRISE 5:41 AM MDT SUNSET 8:24 PM MDT  
MAY 17 2025...........SUNRISE 5:41 AM MDT SUNSET 8:25 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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