386  
CDUS43 KLOT 222232  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
432 PM CST FRI DEC 22 2023  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 22 2023
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1871 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 45 3:59 PM 57 1875 35 10 33  
1957  
MINIMUM 43 12:19 PM -21 1872 23 20 -6  
AVERAGE 44 29 15 14  
 
PRECIPITATION (IN)  
TODAY 0.07 0.90 2006 0.07 0.00 0.09  
MONTH TO DATE 1.79 1.54 0.25 2.16  
SINCE DEC 1 1.79 1.54 0.25 2.16  
SINCE JAN 1 32.55 37.29 -4.74 31.99  
 
SNOWFALL (IN)  
TODAY 0.0 3.6 1953 0.3 -0.3 1.3  
MONTH TO DATE 0.3 5.1 -4.8 3.2  
SINCE DEC 1 0.3 5.1 -4.8 3.2  
SINCE JUL 1 3.0 7.1 -4.1 4.3  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 21 36 -15 51  
MONTH TO DATE 583 734 -151 724  
SINCE DEC 1 583 734 -151 724  
SINCE JUL 1 1547 1885 -338 1789  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 1145 1003 142 1174    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 5.6  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 4:00 PM  
LOWEST 73 7:00 AM  
AVERAGE 83  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 35 62 1982  
MINIMUM TEMPERATURE (F) 23 -21 1983  
 
SUNRISE AND SUNSET  
DECEMBER 22 2023......SUNRISE 7:17 AM CST SUNSET 4:24 PM CST  
DECEMBER 23 2023......SUNRISE 7:17 AM CST SUNSET 4:24 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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