251  
CDUS45 KRIW 230727  
CLIGEY  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
127 AM MDT SAT AUG 23 2025  
   
...............................
 
 
   
..THE GREYBULL WY CLIMATE SUMMARY FOR AUGUST 22 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 85 3:42 PM 98 2011 87 -2 95  
2020  
2023  
MINIMUM 63 6:14 AM 46 2015 54 9 53  
AVERAGE 74 71 3 74  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.24 2007 0.01 -0.01 0.00  
2007  
2014  
MONTH TO DATE 0.12 0.13 -0.01 0.07  
SINCE JUN 1 1.44 1.37 0.07 1.56  
SINCE JAN 1 4.15 3.72 0.43 4.79  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 0 1 -1 0  
SINCE JUN 1 46 67 -21 33  
SINCE JUL 1 0 5 -5 4  
 
COOLING  
YESTERDAY 9 6 3 9  
MONTH TO DATE 224 194 30 208  
SINCE JUN 1 664 625 39 695  
SINCE JAN 1 685 649 36 695    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION N (340)  
AVERAGE WIND SPEED 10.0  
 
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 56 6:00 AM  
LOWEST 31 3:00 PM  
AVERAGE 44  
   
......................................................
 
 
THE GREYBULL WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 98 2006  
MINIMUM TEMPERATURE (F) 54 38 2015  
 
SUNRISE AND SUNSET  
AUGUST 23 2025........SUNRISE 6:25 AM MDT SUNSET 8:04 PM MDT  
AUGUST 24 2025........SUNRISE 6:26 AM MDT SUNSET 8:02 PM MDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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