429  
CDUS45 KRIW 220728  
CLIGEY  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
128 AM MDT SUN JUN 22 2025  
   
...............................  
 
   
..THE GREYBULL WY CLIMATE SUMMARY FOR JUNE 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 84 3:05 PM 104 2016 84 0 84  
MINIMUM 53 11:59 PM 42 2000 54 -1 58  
AVERAGE 69 69 0 71  
 
PRECIPITATION (IN)  
YESTERDAY 0.03 0.27 2009 0.03 0.00 T  
MONTH TO DATE 0.27 0.90 -0.63 0.40  
SINCE JUN 1 0.27 0.90 -0.63 0.40  
SINCE JAN 1 2.98 3.25 -0.27 3.63  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 27 55 -28 29  
SINCE JUN 1 27 55 -28 29  
SINCE JUL 1 6996 7540 -544 6914  
 
COOLING  
YESTERDAY 4 5 -1 6  
MONTH TO DATE 89 68 21 84  
SINCE JUN 1 89 68 21 84  
SINCE JAN 1 110 92 18 84    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 36 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 47 HIGHEST GUST DIRECTION N (340)  
AVERAGE WIND SPEED 17.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 75 4:00 AM  
LOWEST 17 3:00 PM  
AVERAGE 46  
   
......................................................  
 
THE GREYBULL WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 98 2001  
MINIMUM TEMPERATURE (F) 54 39 2019  
 
SUNRISE AND SUNSET  
JUNE 22 2025..........SUNRISE 5:28 AM MDT SUNSET 9:01 PM MDT  
JUNE 23 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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