674  
CDUS45 KRIW 090730  
CLIGEY  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
130 AM MDT SAT AUG 09 2025  
   
...............................  
 
   
..THE GREYBULL WY CLIMATE SUMMARY FOR AUGUST 8 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 80 3:18 PM 100 2012 91 -11 72  
MINIMUM 58 11:59 PM 53 2009 58 0 59  
AVERAGE 69 75 -6 66  
 
PRECIPITATION (IN)  
YESTERDAY T 0.07 2002 0.01 -0.01 0.01  
MONTH TO DATE 0.06 0.04 0.02 0.03  
SINCE JUN 1 1.38 1.28 0.10 1.52  
SINCE JAN 1 4.09 3.63 0.46 4.75  
 
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 4 10 -6 1  
MONTH TO DATE 72 82 -10 90  
SINCE JUN 1 512 513 -1 577  
SINCE JAN 1 533 537 -4 577    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 11.9  
 
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 58 12:00 AM  
LOWEST 16 3:00 PM  
AVERAGE 37  
   
......................................................  
 
THE GREYBULL WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 91 100 2000  
2006  
MINIMUM TEMPERATURE (F) 58 50 2002  
2009  
 
SUNRISE AND SUNSET  
AUGUST 9 2025........SUNRISE 6:09 AM MDT SUNSET 8:26 PM MDT  
AUGUST 10 2025........SUNRISE 6:10 AM MDT SUNSET 8:25 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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