269  
CDUS45 KRIW 150734  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1234 AM MST FRI DEC 15 2023  
   
...............................  
 
   
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 14 2023  
 
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)  
YESTERDAY  
MAXIMUM 43 3:10 PM 55 1998 34 9 24  
MINIMUM 14 6:33 AM -19 2008 14 0 6  
AVERAGE 29 24 5  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.56 2015 0.02 -0.02 0.01  
MONTH TO DATE 0.02 0.28 -0.26 0.55  
SINCE DEC 1 0.02 0.28 -0.26 0.55  
SINCE JAN 1 15.37 11.89 3.48 13.17  
 
SNOWFALL (IN)  
YESTERDAY 0.0 6.1 2015 0.3 -0.3 T  
MONTH TO DATE 0.3 4.9 -4.6 12.2  
SINCE DEC 1 0.3 4.9 -4.6 12.2  
SINCE JUL 1 13.6 22.3 -8.7 30.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 36 41 -5 50  
MONTH TO DATE 463 549 -86 521  
SINCE DEC 1 463 549 -86 521  
SINCE JUL 1 2128 2351 -223 2336  
 
COOLING  
YESTERDAY 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 30 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 11.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 12:00 AM  
LOWEST 43 2:00 PM  
AVERAGE 70  
   
......................................................  
 
THE CASPER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 34 57 1980  
MINIMUM TEMPERATURE (F) 14 -20 2008  
 
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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