051  
CDUS45 KRIW 020731  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1231 AM MST TUE DEC 02 2025  
   
...............................
 
 
   
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 1 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1939 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 31 10:10 PM 63 1995 38 -7 48  
2021  
MINIMUM 4 12:07 AM -23 1985 17 -13 14  
AVERAGE 18 28 -10  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.24 1982 0.02 -0.02 0.00  
MONTH TO DATE 0.00 0.02 -0.02 0.00  
SINCE DEC 1 0.00 0.02 -0.02 0.00  
SINCE JAN 1 11.69 11.63 0.06 9.12  
 
SNOWFALL (IN)  
YESTERDAY 0.0 16.5 1982 0.3 -0.3 0.0  
MONTH TO DATE 0.0 0.3 -0.3 0.0  
SINCE DEC 1 0.0 0.3 -0.3 0.0  
SINCE JUL 1 4.3 17.7 -13.4 T  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 47 37 10 34  
MONTH TO DATE 47 37 10 34  
SINCE DEC 1 47 37 10 34  
SINCE JUL 1 1473 1839 -366 1534  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 467 443 24 538    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION S (200)  
AVERAGE WIND SPEED 15.8  
 
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 79 1:00 AM  
LOWEST 58 2:00 PM  
AVERAGE 69  
   
......................................................
 
 
THE CASPER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 38 66 2021  
MINIMUM TEMPERATURE (F) 17 -15 1985  
 
SUNRISE AND SUNSET  
DECEMBER 2 2025......SUNRISE 7:19 AM MST SUNSET 4:32 PM MST  
DECEMBER 3 2025......SUNRISE 7:20 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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