744  
CDUS45 KRIW 110732  
CLIGEY  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1232 AM MST MON DEC 11 2023  
   
...............................
 
 
   
..THE GREYBULL WY CLIMATE SUMMARY FOR DECEMBER 10 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 40 2:44 PM 53 2003 32 8 26  
MINIMUM 19 8:08 AM -22 2009 9 10 1  
AVERAGE 30 20 10 14  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.09 2012 0.01 -0.01 0.00  
MONTH TO DATE T 0.04 -0.04 T  
SINCE DEC 1 T 0.04 -0.04 T  
SINCE JAN 1 8.68 5.48 3.20 5.87  
 
DEGREE DAYS  
HEATING  
YESTERDAY 35 45 -10 51  
MONTH TO DATE 364 433 -69 466  
SINCE DEC 1 364 433 -69 466  
SINCE JUL 1 1969 2210 -241 2398  
 
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 10 HIGHEST WIND DIRECTION S (160)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION S (160)  
AVERAGE WIND SPEED 4.7  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.2  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 1:00 AM  
LOWEST 35 2:00 PM  
AVERAGE 60  
   
......................................................
 
 
THE GREYBULL WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 31 63 2004  
MINIMUM TEMPERATURE (F) 9 -17 2000  
 
SUNRISE AND SUNSET  
DECEMBER 11 2023......SUNRISE 7:39 AM MST SUNSET 4:32 PM MST  
DECEMBER 12 2023......SUNRISE 7:39 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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