025  
CDUS45 KRIW 190733  
CLIGEY  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
133 AM MDT THU SEP 19 2024  
   
...............................
 
 
   
..THE GREYBULL WY CLIMATE SUMMARY FOR SEPTEMBER 18 2024
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 68 12:41 PM 90 2004 76 -8 86  
2021  
MINIMUM 50 8:06 AM 27 2003 44 6 52  
AVERAGE 59 60 -1 69  
 
PRECIPITATION (IN)  
YESTERDAY 0.16R 0.09 2017 0.03 0.13 0.03  
MONTH TO DATE 0.38 0.44 -0.06 0.91  
SINCE SEP 1 0.38 0.44 -0.06 0.91  
SINCE JAN 1 5.69 4.26 1.43 6.99  
 
DEGREE DAYS  
HEATING  
YESTERDAY 6 6 0 0  
MONTH TO DATE 27 66 -39 11  
SINCE SEP 1 27 66 -39 11  
SINCE JUL 1 40 85 -45 16  
 
COOLING  
YESTERDAY 0 1 -1 4  
MONTH TO DATE 69 41 28 49  
SINCE SEP 1 69 41 28 49  
SINCE JAN 1 810 737 73 701    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NE (50)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NE (60)  
AVERAGE WIND SPEED 6.3  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 89 6:00 AM  
LOWEST 50 1:00 PM  
AVERAGE 70  
   
......................................................
 
 
THE GREYBULL WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 92 2010  
MINIMUM TEMPERATURE (F) 44 30 2003  
 
SUNRISE AND SUNSET  
SEPTEMBER 19 2024.....SUNRISE 6:57 AM MDT SUNSET 7:14 PM MDT  
SEPTEMBER 20 2024.....SUNRISE 6:58 AM MDT SUNSET 7:12 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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