899  
CDUS43 KLOT 230632  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
131 AM CDT WED MAY 23 2018  
 
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 22 2018
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1871 TO 2018  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 67 1129 AM 94 1925 72 -5 73  
MINIMUM 54 1159 PM 36 2006 50 4 48  
AVERAGE 61 61 0 61  
 
PRECIPITATION (IN)  
YESTERDAY T 1.62 1983 0.12 -0.12 0.01  
MONTH TO DATE 7.31 2.61 4.70 2.25  
SINCE MAR 1 11.77 8.49 3.28 12.69  
SINCE JAN 1 17.95 12.01 5.94 17.08  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 2011 0.0 0.0 0.0  
1917  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE MAR 1 5.8 6.8 -1.0 7.8  
SINCE JUL 1 36.1 36.3 -0.2 26.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 4 6 -2 4  
MONTH TO DATE 105 182 -77 212  
SINCE MAR 1 1677 1515 162 1336  
SINCE JUL 1 6135 6249 -114 5261  
 
COOLING  
YESTERDAY 0 2 -2 0  
MONTH TO DATE 37 24 13 18  
SINCE MAR 1 37 34 3 30  
SINCE JAN 1 37 34 3 30    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NE (50)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION NE (50)  
AVERAGE WIND SPEED 4.6  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
HAZE  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 1200 AM  
LOWEST 67 400 PM  
AVERAGE 84  
   
......................................................
 
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 92 1977  
1964  
1921  
MINIMUM TEMPERATURE (F) 50 37 1917  
 
 
SUNRISE AND SUNSET  
MAY 23 2018...........SUNRISE 524 AM CDT SUNSET 813 PM CDT  
MAY 24 2018...........SUNRISE 523 AM CDT SUNSET 814 PM CDT  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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