165  
CDUS45 KRIW 180728  
CLIRKS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1228 AM MST MON DEC 18 2023  
   
...............................
 
 
   
..THE ROCK SPRINGS WY CLIMATE SUMMARY FOR DECEMBER 17 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 43 3:16 PM 57 1980 29 14 17  
MINIMUM 22 8:06 AM -16 1964 13 9 4  
AVERAGE 33 21 12  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.20 1970 0.01 -0.01 0.00  
MONTH TO DATE 0.01 0.17 -0.16 0.05  
SINCE DEC 1 0.01 0.17 -0.16 0.05  
SINCE JAN 1 5.25 7.41 -2.16 4.10  
 
DEGREE DAYS  
HEATING  
YESTERDAY 32 44 -12 54  
MONTH TO DATE 610 727 -117 802  
SINCE DEC 1 610 727 -117 802  
SINCE JUL 1 2299 2681 -382 2723  
 
COOLING  
YESTERDAY 0 0 0 0  
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 25 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 11.8  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 63 12:00 AM  
LOWEST 30 2:00 PM  
AVERAGE 47  
   
......................................................
 
 
THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 29 51 1980  
MINIMUM TEMPERATURE (F) 13 -12 1964  
 
SUNRISE AND SUNSET  
DECEMBER 18 2023......SUNRISE 7:38 AM MST SUNSET 4:48 PM MST  
DECEMBER 19 2023......SUNRISE 7:38 AM MST SUNSET 4:48 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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