322  
CDUS45 KRIW 280726  
CLIGEY  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
126 AM MDT THU AUG 28 2025  
   
...............................  
 
   
..THE GREYBULL WY CLIMATE SUMMARY FOR AUGUST 27 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 84 11:10 AM 99 2011 86 -2 84  
MINIMUM 63 6:17 AM 42 2005 53 10 48  
AVERAGE 74 69 5 66  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 T 2010 0.01 -0.01 0.00  
2010  
2013  
MONTH TO DATE 0.12 0.18 -0.06 0.59  
SINCE JUN 1 1.44 1.42 0.02 2.08  
SINCE JAN 1 4.15 3.77 0.38 5.31  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 0 6 -6 7  
SINCE JUN 1 46 72 -26 40  
SINCE JUL 1 0 10 -10 11  
 
COOLING  
YESTERDAY 9 5 4 1  
MONTH TO DATE 257 222 35 246  
SINCE JUN 1 697 653 44 733  
SINCE JAN 1 718 677 41 733    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SE (130)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION SE (140)  
AVERAGE WIND SPEED 5.5  
 
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 54 5:00 AM  
LOWEST 29 12:00 PM  
AVERAGE 42  
   
......................................................  
 
THE GREYBULL WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 85 98 2012  
MINIMUM TEMPERATURE (F) 52 42 2004  
 
SUNRISE AND SUNSET  
AUGUST 28 2025........SUNRISE 6:31 AM MDT SUNSET 7:55 PM MDT  
AUGUST 29 2025........SUNRISE 6:32 AM MDT SUNSET 7:53 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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