665  
CDUS45 KRIW 220739  
CLIRKS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1239 AM MST FRI DEC 22 2023  
   
...............................  
 
   
..THE ROCK SPRINGS WY CLIMATE SUMMARY FOR DECEMBER 21 2023  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1948 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 46 3:22 PM 51 1969 28 18 35  
MINIMUM 22 2:44 AM -29 1990 13 9 MM  
AVERAGE 34 20 14  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.19 1963 0.01 -0.01 0.03  
MONTH TO DATE 0.01 0.21 -0.20 0.08  
SINCE DEC 1 0.01 0.21 -0.20 0.08  
SINCE JAN 1 5.25 7.45 -2.20 4.13  
 
DEGREE DAYS  
HEATING  
YESTERDAY 31 44 -13 MM  
MONTH TO DATE 750 903 -153 949  
SINCE DEC 1 750 903 -153 949  
SINCE JUL 1 2439 2857 -418 2870  
 
COOLING  
YESTERDAY 0 0 0 MM  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 323 320 3 537    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 4.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 91 1:00 AM  
LOWEST 51 2:00 PM  
AVERAGE 71  
   
......................................................  
 
THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 28 47 1964  
MINIMUM TEMPERATURE (F) 13 -29 1990  
 
SUNRISE AND SUNSET  
DECEMBER 22 2023......SUNRISE 7:40 AM MST SUNSET 4:50 PM MST  
DECEMBER 23 2023......SUNRISE 7:40 AM MST SUNSET 4:50 PM MST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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