416  
CDUS45 KCYS 180732  
CLIAIA  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHEYENNE WY  
1230 AM MST WED DEC 18 2019  
 
   
...............................
 
 
   
..THE ALLIANCE NE AIRPORT CLIMATE SUMMARY FOR DECEMBER 17 2019
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1896 TO 2019  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 31 238 PM 68 1980 38 -7 MM  
MINIMUM -2 448 AM -28 2016 8 -10 23  
AVERAGE 15 23 -8 MM  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.28 1967 0.01 -0.01 0.00  
MONTH TO DATE 0.04 0.24 -0.20 0.15  
SINCE JAN 1 18.83 15.58 3.25 16.27  
 
DEGREE DAYS  
HEATING  
YESTERDAY 50 42 8 MM  
MONTH TO DATE 679 694 -15 560  
SINCE DEC 1 679 694 -15 560  
SINCE JUL 1 2653 2493 160 2392  
 
COOLING  
YESTERDAY 0 0 0 MM  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 516 564 -48 566    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (290)  
AVERAGE WIND SPEED 12.9  
 
 
SKY COVER  
AVERAGE SKY COVER 0.1  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 400 AM  
LOWEST 60 1000 AM  
AVERAGE 72  
   
......................................................
 
 
 
THE ALLIANCE NE AIRPORT CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 38 64 1976  
MINIMUM TEMPERATURE (F) 8 -28 2016  
 
 
SUNRISE AND SUNSET  
DECEMBER 18 2019......SUNRISE 714 AM MST SUNSET 421 PM MST  
DECEMBER 19 2019......SUNRISE 715 AM MST SUNSET 422 PM MST  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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