868  
CDUS45 KRIW 230045  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
645 PM MDT THU MAY 22 2025  
   
...............................  
 
   
..THE CASPER WY CLIMATE SUMMARY FOR MAY 22 2025  
 
VALID TODAY AS OF 0600 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 72 3:08 PM 86 1980 69 3 63  
2006  
MINIMUM 28 4:49 AM 22 2022 39 -11 32  
AVERAGE 50 54 -4 48  
 
PRECIPITATION (IN)  
TODAY 0.00 2.07 1952 0.07 -0.07 0.00  
MONTH TO DATE 0.74 1.59 -0.85 2.44  
SINCE MAR 1 3.66 3.84 -0.18 4.23  
SINCE JAN 1 4.38 4.89 -0.51 5.26  
 
SNOWFALL (IN)  
TODAY MM 0.1 MM 0.0  
MONTH TO DATE 0.3 2.4 -2.1 3.9  
SINCE MAR 1 16.0 23.2 -7.2 13.2  
SINCE JUL 1 26.5 71.5 -45.0 42.5  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 15 11 4 17  
MONTH TO DATE 298 329 -31 367  
SINCE MAR 1 1847 1918 -71 1893  
SINCE JUL 1 6862 7280 -418 6848  
 
COOLING  
TODAY 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 24 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION E (70)  
AVERAGE WIND SPEED 7.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96  
LOWEST 30  
AVERAGE 63  
   
......................................................  
 
THE CASPER WY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 70 88 1984  
MINIMUM TEMPERATURE (F) 40 28 1986  
2002  
2019  
 
SUNRISE AND SUNSET  
MAY 22 2025...........SUNRISE 5:36 AM MDT SUNSET 8:30 PM MDT  
MAY 23 2025...........SUNRISE 5:35 AM MDT SUNSET 8:31 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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