291  
CDUS43 KLOT 152232  
CLIMDW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
432 PM CST FRI DEC 15 2023  
   
...............................
 
 
   
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR DECEMBER 15 2023
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 54 3:35 PM 66 2021 38 16 38  
MINIMUM 36 5:22 AM -8 1951 25 11 31  
1989  
AVERAGE 45 31 14 35  
 
PRECIPITATION (IN)  
TODAY 0.00 1.14 1987 0.06 -0.06 0.14  
MONTH TO DATE 1.21 0.93 0.28 1.61  
SINCE DEC 1 1.21 0.93 0.28 1.61  
SINCE JAN 1 34.17 33.56 0.61 30.70  
 
DEGREE DAYS  
HEATING  
TODAY 20 34 -14 30  
MONTH TO DATE 369 472 -103 415  
SINCE DEC 1 369 472 -103 415  
SINCE JUL 1 1321 1556 -235 1378  
 
COOLING  
TODAY 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 15 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 6.8  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 73 2:00 AM  
LOWEST 36 11:00 AM  
AVERAGE 55  
   
......................................................
 
 
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 37 67 2021  
MINIMUM TEMPERATURE (F) 25 -12 1932  
1951  
 
SUNRISE AND SUNSET  
DECEMBER 15 2023......SUNRISE 7:11 AM CST SUNSET 4:21 PM CST  
DECEMBER 16 2023......SUNRISE 7:12 AM CST SUNSET 4:21 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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