485  
CDUS45 KCYS 202129  
CLICYS  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHEYENNE WY  
329 PM MDT SUN SEP 20 2020  
 
   
...............................
 
 
 
...THE CHEYENNE WYOMING AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 20 2020...  
VALID AS OF 0300 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1871 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 79 1254 PM 87 2010 70 9 82  
1956  
MINIMUM 50 534 AM 21 1983 43 7 51  
AVERAGE 65 56 9 67  
 
PRECIPITATION (IN)  
TODAY 0.00 1.32 1940 0.05 -0.05 T  
MONTH TO DATE 0.60 1.03 -0.43 0.41  
SINCE SEP 1 0.60 1.03 -0.43 0.41  
SINCE JAN 1 8.52 13.48 -4.96 14.73  
 
SNOWFALL (IN)  
TODAY 0.0 1.3 1995 0.0 0.0 0.0  
MONTH TO DATE 1.1 0.4 0.7 T  
SINCE JUL 1 1.1 0.4 0.7 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 9 -9 0  
MONTH TO DATE 135 112 23 28  
SINCE SEP 1 135 112 23 28  
SINCE JUL 1 148 168 -20 38  
 
COOLING  
TODAY 0 0 0 2  
MONTH TO DATE 32 21 11 74  
SINCE SEP 1 32 21 11 74  
SINCE JAN 1 593 347 246 463    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION W (280)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 15.1  
 
 
SKY COVER  
AVERAGE SKY COVER 0.2  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 63 500 AM  
LOWEST 18 1200 PM  
AVERAGE 41  
   
......................................................
 
 
 
THE CHEYENNE WYOMING AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 85 2015  
MINIMUM TEMPERATURE (F) 42 20 1983  
 
 
SUNRISE AND SUNSET  
SEPTEMBER 20 2020.....SUNRISE 645 AM MDT SUNSET 659 PM MDT  
SEPTEMBER 21 2020.....SUNRISE 646 AM MDT SUNSET 657 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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