321  
CDUS45 KRIW 210727  
CLIGEY  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
127 AM MDT SAT JUN 21 2025  
   
...............................  
 
   
..THE GREYBULL WY CLIMATE SUMMARY FOR JUNE 20 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 91 MM 95 2005 83 8 84  
2007  
2017  
MINIMUM 65 MM 45 2004 54 11 45  
2024  
AVERAGE 78 68 10 65  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.06 2000 0.03 -0.03 0.00  
MONTH TO DATE 0.24 0.87 -0.63 0.40  
SINCE JUN 1 0.24 0.87 -0.63 0.40  
SINCE JAN 1 2.95 3.22 -0.27 3.63  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 27 54 -27 29  
SINCE JUN 1 27 54 -27 29  
SINCE JUL 1 6996 7539 -543 6914  
 
COOLING  
YESTERDAY 13 4 9 0  
MONTH TO DATE 85 63 22 78  
SINCE JUN 1 85 63 22 78  
SINCE JAN 1 106 87 19 78    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 44 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 9.5  
 
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 11:00 PM  
LOWEST 18 4:00 PM  
AVERAGE 38  
   
......................................................  
 
THE GREYBULL WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 104 2016  
MINIMUM TEMPERATURE (F) 54 42 2000  
 
SUNRISE AND SUNSET  
JUNE 21 2025..........SUNRISE 5:28 AM MDT SUNSET 9:01 PM MDT  
JUNE 22 2025..........SUNRISE 5:28 AM MDT SUNSET 9:01 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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