736  
CDUS45 KRIW 160029  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
529 PM MST FRI DEC 15 2023  
   
...............................  
 
   
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 15 2023  
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1939 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 47 1:47 PM 57 1980 34 13 19  
MINIMUM 23 2:59 AM -20 2008 14 9 -3  
AVERAGE 35 24 11 8  
 
PRECIPITATION (IN)  
TODAY 0.00 0.52 2010 0.02 -0.02 0.00  
MONTH TO DATE 0.02 0.30 -0.28 0.55  
SINCE DEC 1 0.02 0.30 -0.28 0.55  
SINCE JAN 1 15.37 11.91 3.46 13.17  
 
SNOWFALL (IN)  
TODAY 0.0 0.4 -0.4 0.0  
MONTH TO DATE 0.3 5.3 -5.0 12.2  
SINCE DEC 1 0.3 5.3 -5.0 12.2  
SINCE JUL 1 13.6 22.7 -9.1 30.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 30 41 -11 57  
MONTH TO DATE 493 590 -97 578  
SINCE DEC 1 493 590 -97 578  
SINCE JUL 1 2158 2392 -234 2393  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 342 443 -101 544    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 11.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77  
LOWEST 31  
AVERAGE 54  
   
......................................................  
 
THE CASPER WY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 34 59 1980  
MINIMUM TEMPERATURE (F) 14 -31 1964  
 
SUNRISE AND SUNSET  
DECEMBER 15 2023......SUNRISE 7:30 AM MST SUNSET 4:32 PM MST  
DECEMBER 16 2023......SUNRISE 7:30 AM MST SUNSET 4:32 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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