188  
CDUS43 KLOT 190636  
CLIMDW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1236 AM CST TUE DEC 19 2023  
   
...............................
 
 
   
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR DECEMBER 18 2023
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1928 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 37 1:31 AM 59 1939 37 0 21  
MINIMUM 22 11:59 PM -9 1983 24 -2 14  
AVERAGE 30 30 0 18  
 
PRECIPITATION (IN)  
YESTERDAY T 1.06 2002 0.06 -0.06 T  
MONTH TO DATE 1.69 1.10 0.59 1.62  
SINCE DEC 1 1.69 1.10 0.59 1.62  
SINCE JAN 1 34.65 33.73 0.92 30.71  
 
DEGREE DAYS  
HEATING  
YESTERDAY 35 34 1 47  
MONTH TO DATE 447 574 -127 540  
SINCE DEC 1 447 574 -127 540  
SINCE JUL 1 1399 1658 -259 1503  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1149 1112 37 1514    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 45 HIGHEST GUST DIRECTION N (340)  
AVERAGE WIND SPEED 16.9  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
LIGHT SNOW  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82 12:00 AM  
LOWEST 43 10:00 AM  
AVERAGE 63  
   
......................................................
 
 
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 37 56 0  
1957  
1988  
MINIMUM TEMPERATURE (F) 24 -12 1983  
 
SUNRISE AND SUNSET  
DECEMBER 19 2023......SUNRISE 7:14 AM CST SUNSET 4:22 PM CST  
DECEMBER 20 2023......SUNRISE 7:14 AM CST SUNSET 4:23 PM CST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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