402  
CDUS45 KRIW 230745  
CLIGEY  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
145 AM MDT FRI OCT 23 2020  
   
...............................
 
 
   
..THE GREYBULL WY CLIMATE SUMMARY FOR OCTOBER 22 2020
 
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1998 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 38 12:06 AM 80 2003 58 -20 53  
MINIMUM 19R 11:59 PM 21 2002 30 -11 31  
AVERAGE 29 44 -15 42  
 
PRECIPITATION (IN)  
YESTERDAY 0.02 0.25 2000 0.01 0.01 0.08  
MONTH TO DATE 0.38 0.50 -0.12 0.58  
SINCE SEP 1 0.73 1.38 -0.65 3.79  
SINCE JAN 1 4.18 6.83 -2.65 7.90  
 
DEGREE DAYS  
HEATING  
YESTERDAY 36 21 15 23  
MONTH TO DATE 331 379 -48 487  
SINCE SEP 1 479 589 -110 661  
SINCE JUL 1 494 610 -116 662  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE SEP 1 45 36 9 67  
SINCE JAN 1 862 669 193 733    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 35 HIGHEST WIND DIRECTION N (340)  
HIGHEST GUST SPEED 45 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 19.9  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT SNOW  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 2:00 AM  
LOWEST 53 3:00 PM  
AVERAGE 73  
   
......................................................
 
 
THE GREYBULL WY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 57 70 1999  
2011  
2014  
MINIMUM TEMPERATURE (F) 30 20 2002  
2006  
 
SUNRISE AND SUNSET  
OCTOBER 23 2020.......SUNRISE 7:39 AM MDT SUNSET 6:14 PM MDT  
OCTOBER 24 2020.......SUNRISE 7:40 AM MDT SUNSET 6:12 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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