444  
CDUS45 KRIW 190802  
CLIRKS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
102 AM MST TUE DEC 19 2023  
   
...............................  
 
   
..THE ROCK SPRINGS WY CLIMATE SUMMARY FOR DECEMBER 18 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 34 3:43 PM 51 1980 29 5 18  
MINIMUM 15 7:37 AM -12 1964 13 2 1  
AVERAGE 25 21 4  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.40 1977 0.01 -0.01 0.00  
MONTH TO DATE 0.01 0.18 -0.17 0.05  
SINCE DEC 1 0.01 0.18 -0.17 0.05  
SINCE JAN 1 5.25 7.42 -2.17 4.10  
 
DEGREE DAYS  
HEATING  
YESTERDAY 40 44 -4 55  
MONTH TO DATE 650 771 -121 857  
SINCE DEC 1 650 771 -121 857  
SINCE JUL 1 2339 2725 -386 2778  
 
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 9 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 10 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 2.4  
 
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 80 9:00 AM  
LOWEST 47 1:00 PM  
AVERAGE 64  
   
......................................................  
 
THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 29 49 1969  
MINIMUM TEMPERATURE (F) 13 -17 1990  
 
SUNRISE AND SUNSET  
DECEMBER 19 2023......SUNRISE 7:38 AM MST SUNSET 4:48 PM MST  
DECEMBER 20 2023......SUNRISE 7:39 AM MST SUNSET 4:49 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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