916  
CDUS45 KRIW 220727  
CLIRKS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
127 AM MDT THU MAY 22 2025  
   
...............................
 
 
   
..THE ROCK SPRINGS WY CLIMATE SUMMARY FOR MAY 21 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1948 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 64 3:32 PM 83 2012 65 -1 49  
MINIMUM 38 5:31 AM 22 2022 40 -2 30  
AVERAGE 51 53 -2  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 0.40 1992 0.04 -0.03 0.02  
MONTH TO DATE 0.32 0.89 -0.57 0.69  
SINCE MAR 1 2.03 2.38 -0.35 2.29  
SINCE JAN 1 2.29 3.13 -0.84 2.76  
 
DEGREE DAYS  
HEATING  
YESTERDAY 14 12 2 25  
MONTH TO DATE 291 336 -45 370  
SINCE MAR 1 1722 2009 -287 1998  
SINCE JUL 1 6943 7799 -856 7306  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 1 0 1 0  
SINCE MAR 1 1 0 1 0  
SINCE JAN 1 1 0 1 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 30 HIGHEST WIND DIRECTION W (270)  
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION W (260)  
AVERAGE WIND SPEED 14.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 73 1:00 AM  
LOWEST 11 5:00 PM  
AVERAGE 42  
   
......................................................
 
 
THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 81 1967  
MINIMUM TEMPERATURE (F) 41 26 1974  
 
SUNRISE AND SUNSET  
MAY 22 2025...........SUNRISE 5:50 AM MDT SUNSET 8:36 PM MDT  
MAY 23 2025...........SUNRISE 5:50 AM MDT SUNSET 8:37 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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