743  
CDUS45 KRIW 110732  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1232 AM MST MON DEC 11 2023  
   
...............................  
 
   
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 10 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 44 2:23 PM 63 1939 35 9 42  
MINIMUM 25 1:14 AM -18 1961 15 10 15  
AVERAGE 35 25 10  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.23 1970 0.02 -0.02 0.00  
MONTH TO DATE 0.01 0.20 -0.19 0.15  
SINCE DEC 1 0.01 0.20 -0.19 0.15  
SINCE JAN 1 15.36 11.81 3.55 12.77  
 
SNOWFALL (IN)  
YESTERDAY 0.0 5.2 1979 0.4 -0.4 0.0  
MONTH TO DATE 0.3 3.5 -3.2 2.5  
SINCE DEC 1 0.3 3.5 -3.2 2.5  
SINCE JUL 1 13.6 20.9 -7.3 20.4  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 30 40 -10 36  
MONTH TO DATE 321 388 -67 355  
SINCE DEC 1 321 388 -67 355  
SINCE JUL 1 1986 2190 -204 2170  
 
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 41 HIGHEST WIND DIRECTION SW (220)  
HIGHEST GUST SPEED 56 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 22.1  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 66 11:00 PM  
LOWEST 34 1:00 PM  
AVERAGE 50  
   
......................................................  
 
THE CASPER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 35 59 1939  
MINIMUM TEMPERATURE (F) 15 -19 1985  
 
SUNRISE AND SUNSET  
DECEMBER 11 2023......SUNRISE 7:27 AM MST SUNSET 4:31 PM MST  
DECEMBER 12 2023......SUNRISE 7:27 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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