664  
CDUS45 KRIW 070728  
CLIGEY  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
128 AM MDT THU SEP 07 2023  
   
...............................
 
 
   
..THE GREYBULL WY CLIMATE SUMMARY FOR SEPTEMBER 6 2023
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 82 4:36 PM 94 2022 82 0 94  
MINIMUM 51 4:46 AM 40 2015 49 2 51  
AVERAGE 67 65 2 73  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.50 2001 0.02 -0.02 0.00  
MONTH TO DATE 0.87 0.12 0.75 0.00  
SINCE SEP 1 0.87 0.12 0.75 0.00  
SINCE JAN 1 6.95 3.94 3.01 4.24  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 3 -3 0  
MONTH TO DATE 4 14 -10 0  
SINCE SEP 1 4 14 -10 0  
SINCE JUL 1 9 33 -24 3  
 
COOLING  
YESTERDAY 2 3 -1 8  
MONTH TO DATE 30 21 9 69  
SINCE SEP 1 30 21 9 69  
SINCE JAN 1 682 717 -35 916    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION S (170)  
AVERAGE WIND SPEED 3.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 7:00 AM  
LOWEST 21 4:00 PM  
AVERAGE 57  
   
......................................................
 
 
THE GREYBULL WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 81 103 2022  
MINIMUM TEMPERATURE (F) 48 34 2010  
 
SUNRISE AND SUNSET  
SEPTEMBER 7 2023.....SUNRISE 6:42 AM MDT SUNSET 7:38 PM MDT  
SEPTEMBER 8 2023.....SUNRISE 6:43 AM MDT SUNSET 7:36 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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