818  
CDUS45 KRIW 130728  
CLIGEY  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
128 AM MDT FRI SEP 13 2024  
   
...............................
 
 
   
..THE GREYBULL WY CLIMATE SUMMARY FOR SEPTEMBER 12 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 69 4:40 PM 93 2017 79 -10 86  
MINIMUM 49 11:48 PM 30 2014 46 3 47  
AVERAGE 59 63 -4 67  
 
PRECIPITATION (IN)  
YESTERDAY 0.19R 0.12 2016 0.03 0.16 T  
MONTH TO DATE 0.22 0.27 -0.05 0.87  
SINCE SEP 1 0.22 0.27 -0.05 0.87  
SINCE JAN 1 5.53 4.09 1.44 6.95  
 
DEGREE DAYS  
HEATING  
YESTERDAY 6 4 2 0  
MONTH TO DATE 6 35 -29 6  
SINCE SEP 1 6 35 -29 6  
SINCE JUL 1 19 54 -35 11  
 
COOLING  
YESTERDAY 0 2 -2 2  
MONTH TO DATE 64 34 30 44  
SINCE SEP 1 64 34 30 44  
SINCE JAN 1 805 730 75 696    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 36 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 49 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 7.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 10:00 AM  
LOWEST 34 4:00 PM  
AVERAGE 62  
   
......................................................
 
 
THE GREYBULL WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 92 2015  
MINIMUM TEMPERATURE (F) 46 31 1999  
 
SUNRISE AND SUNSET  
SEPTEMBER 13 2024.....SUNRISE 6:50 AM MDT SUNSET 7:25 PM MDT  
SEPTEMBER 14 2024.....SUNRISE 6:51 AM MDT SUNSET 7:24 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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