454  
CDUS45 KRIW 190802  
CLICPR  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
102 AM MST TUE DEC 19 2023  
   
...............................  
 
   
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 18 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 50 1:31 PM 52 1994 34 16 28  
MINIMUM 16 12:40 AM -18 1983 14 2 -5  
AVERAGE 33 24 9  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.19 1961 0.01 -0.01 0.00  
MONTH TO DATE 0.02 0.35 -0.33 0.55  
SINCE DEC 1 0.02 0.35 -0.33 0.55  
SINCE JAN 1 15.37 11.96 3.41 13.17  
 
SNOWFALL (IN)  
YESTERDAY 0.0 4.0 2016 0.4 -0.4 0.0  
MONTH TO DATE 0.3 6.4 -6.1 12.2  
SINCE DEC 1 0.3 6.4 -6.1 12.2  
SINCE JUL 1 13.6 23.8 -10.2 30.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 32 41 -9 53  
MONTH TO DATE 580 713 -133 737  
SINCE DEC 1 580 713 -133 737  
SINCE JUL 1 2245 2515 -270 2552  
 
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 31 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 18.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 77 12:00 AM  
LOWEST 22 1:00 PM  
AVERAGE 50  
   
......................................................  
 
THE CASPER WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 34 51 2004  
MINIMUM TEMPERATURE (F) 14 -24 1990  
 
SUNRISE AND SUNSET  
DECEMBER 19 2023......SUNRISE 7:32 AM MST SUNSET 4:33 PM MST  
DECEMBER 20 2023......SUNRISE 7:33 AM MST SUNSET 4:34 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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