517  
CDUS45 KCYS 180741  
CLIAIA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHEYENNE WY  
138 AM MDT FRI SEP 18 2020  
 
   
...............................
 
 
   
..THE ALLIANCE NE AIRPORT CLIMATE SUMMARY FOR SEPTEMBER 17 2020
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1896 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 80 315 PM 100 2000 76 4 83  
MINIMUM 44 1125 PM 29 1965 42 2 48  
1912  
1903  
AVERAGE 62 59 3 66  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.25 1996 0.05 -0.05 0.00  
MONTH TO DATE 0.50 0.85 -0.35 1.37  
SINCE JAN 1 7.63 13.26 -5.63 18.33  
 
DEGREE DAYS  
HEATING  
YESTERDAY 3 7 -4 0  
MONTH TO DATE 122 77 45 28  
SINCE SEP 1 122 77 45 28  
SINCE JUL 1 133 114 19 52  
 
COOLING  
YESTERDAY 0 1 -1 1  
MONTH TO DATE 24 33 -9 52  
SINCE SEP 1 24 33 -9 52  
SINCE JAN 1 751 556 195 509    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 7.8  
 
 
SKY COVER  
AVERAGE SKY COVER 0.0  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
HAZE  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 100 AM  
LOWEST 28 300 PM  
AVERAGE 57  
   
......................................................
 
 
 
THE ALLIANCE NE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 75 94 1998  
MINIMUM TEMPERATURE (F) 42 25 1912  
 
 
SUNRISE AND SUNSET  
SEPTEMBER 18 2020.....SUNRISE 635 AM MDT SUNSET 654 PM MDT  
SEPTEMBER 19 2020.....SUNRISE 636 AM MDT SUNSET 653 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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