542  
CDUS43 KLOT 160824  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
324 AM CDT MON JUL 16 2018  
 
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR JULY 15 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 91 310 PM 102 1988 85 6 81  
MINIMUM 72 511 AM 52 1967 64 8 60  
1945  
AVERAGE 82 74 8 71  
 
PRECIPITATION (IN)  
YESTERDAY T 1.88 1899 0.11 -0.11 0.00  
MONTH TO DATE 0.53 1.65 -1.12 3.10  
SINCE JUN 1 8.16 5.10 3.06 6.54  
SINCE JAN 1 27.01 18.18 8.83 24.65  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 T  
SINCE JUN 1 0.0 0.0 0.0 T  
SINCE JUL 1 0.0 0.0 0.0 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 10 48 -38 3  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 17 9 8 6  
MONTH TO DATE 205 134 71 148  
SINCE JUN 1 420 299 121 378  
SINCE JAN 1 569 353 216 411    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (300)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 3.9  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.5  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
HAZE  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 400 AM  
LOWEST 50 200 PM  
AVERAGE 72  
   
......................................................
 
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 84 100 1887  
MINIMUM TEMPERATURE (F) 64 49 1945  
 
 
SUNRISE AND SUNSET  
JULY 16 2018..........SUNRISE 530 AM CDT SUNSET 825 PM CDT  
JULY 17 2018..........SUNRISE 531 AM CDT SUNSET 824 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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