297  
CDUS45 KRIW 170733  
CLIGEY  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
133 AM MDT THU JUL 17 2025  
   
...............................  
 
   
..THE GREYBULL WY CLIMATE SUMMARY FOR JULY 16 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 73 5:43 PM 105 2005 92 -19 95  
MINIMUM 56 6:08 AM 46 1999 59 -3 58  
AVERAGE 65 75 -10 77  
 
PRECIPITATION (IN)  
YESTERDAY T 0.04 2001 0.01 -0.01 0.00  
MONTH TO DATE 0.19 0.11 0.08 0.98  
SINCE JUN 1 0.65 1.19 -0.54 1.38  
SINCE JAN 1 3.36 3.54 -0.18 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 0 10 -10 12  
MONTH TO DATE 151 143 8 137  
SINCE JUN 1 283 265 18 311  
SINCE JAN 1 304 289 15 311    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 5.6  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 1:00 AM  
LOWEST 42 5:00 PM  
AVERAGE 66  
   
......................................................  
 
THE GREYBULL WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 92 103 2003  
2022  
MINIMUM TEMPERATURE (F) 59 53 1999  
 
SUNRISE AND SUNSET  
JULY 17 2025..........SUNRISE 5:44 AM MDT SUNSET 8:53 PM MDT  
JULY 18 2025..........SUNRISE 5:45 AM MDT SUNSET 8:52 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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