213  
CDUS45 KRIW 150734  
CLIGEY  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1234 AM MST FRI DEC 15 2023  
   
...............................  
 
   
..THE GREYBULL WY CLIMATE SUMMARY FOR DECEMBER 14 2023  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 38 3:39 PM 59 2021 31 7 30  
MINIMUM 10 7:43 AM -19 2008 8 2 8  
AVERAGE 24 19 5 19  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 T 2015 0.00 0.00 T  
2020  
2022  
MONTH TO DATE T 0.05 -0.05 0.03  
SINCE DEC 1 T 0.05 -0.05 0.03  
SINCE JAN 1 8.68 5.49 3.19 5.90  
 
DEGREE DAYS  
HEATING  
YESTERDAY 41 46 -5 46  
MONTH TO DATE 516 615 -99 643  
SINCE DEC 1 516 615 -99 643  
SINCE JUL 1 2121 2392 -271 2575  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 702 744 -42 943    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 8 HIGHEST WIND DIRECTION S (180)  
HIGHEST GUST SPEED 10 HIGHEST GUST DIRECTION S (170)  
AVERAGE WIND SPEED 2.5  
 
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 92 9:00 AM  
LOWEST 56 1:00 PM  
AVERAGE 74  
   
......................................................  
 
THE GREYBULL WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 30 57 2006  
MINIMUM TEMPERATURE (F) 8 -21 2008  
 
SUNRISE AND SUNSET  
DECEMBER 15 2023......SUNRISE 7:42 AM MST SUNSET 4:33 PM MST  
DECEMBER 16 2023......SUNRISE 7:42 AM MST SUNSET 4:33 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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