082  
CDUS45 KRIW 220726  
CLIGEY  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
126 AM MDT FRI AUG 22 2025  
   
...............................  
 
   
..THE GREYBULL WY CLIMATE SUMMARY FOR AUGUST 21 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 93 2:33 PM 101 2023 88 5 101  
2024  
MINIMUM 66 6:12 AM 47 2016 55 11 54  
2021  
AVERAGE 80 71 9 78  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 T 2007 0.01 -0.01 0.00  
2007  
2014  
MONTH TO DATE 0.12 0.12 0.00 0.07  
SINCE JUN 1 1.44 1.36 0.08 1.56  
SINCE JAN 1 4.15 3.71 0.44 4.79  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 46 66 -20 33  
SINCE JUL 1 0 4 -4 4  
 
COOLING  
YESTERDAY 15 7 8 13  
MONTH TO DATE 215 188 27 199  
SINCE JUN 1 655 619 36 686  
SINCE JAN 1 676 643 33 686    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION N (340)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 7.4  
 
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 48 10:00 PM  
LOWEST 22 1:00 PM  
AVERAGE 35  
   
......................................................  
 
THE GREYBULL WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 98 2011  
2020  
2023  
MINIMUM TEMPERATURE (F) 54 46 2015  
 
SUNRISE AND SUNSET  
AUGUST 22 2025........SUNRISE 6:24 AM MDT SUNSET 8:06 PM MDT  
AUGUST 23 2025........SUNRISE 6:25 AM MDT SUNSET 8:04 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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