159  
CDUS45 KRIW 200727  
CLIGEY  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
127 AM MDT SUN JUL 20 2025  
   
...............................  
 
   
..THE GREYBULL WY CLIMATE SUMMARY FOR JULY 19 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 94 2:13 PM 107 2021 93 1 96  
MINIMUM 59 5:08 AM 53 2000 59 0 64  
2008  
AVERAGE 77 76 1 80  
 
PRECIPITATION (IN)  
YESTERDAY 0.03 0.12 2009 0.01 0.02 T  
MONTH TO DATE 0.32 0.12 0.20 0.98  
SINCE JUN 1 0.78 1.20 -0.42 1.38  
SINCE JAN 1 3.49 3.55 -0.06 4.61  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 4  
SINCE JUN 1 46 62 -16 33  
SINCE JUL 1 0 0 0 4  
 
COOLING  
YESTERDAY 12 11 1 15  
MONTH TO DATE 185 176 9 179  
SINCE JUN 1 317 298 19 353  
SINCE JAN 1 338 322 16 353    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION SW (240)  
HIGHEST GUST SPEED 43 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 5.0  
 
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 78 6:00 AM  
LOWEST 17 3:00 PM  
AVERAGE 48  
   
......................................................  
 
THE GREYBULL WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 93 103 2016  
MINIMUM TEMPERATURE (F) 59 52 2008  
 
SUNRISE AND SUNSET  
JULY 20 2025..........SUNRISE 5:47 AM MDT SUNSET 8:50 PM MDT  
JULY 21 2025..........SUNRISE 5:48 AM MDT SUNSET 8:49 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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