391  
CDUS43 KLOT 010638  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1238 AM CST THU FEB 01 2024  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR JANUARY 31 2024
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1871 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 38 4:34 PM 65 1989 32 6 12  
MINIMUM 36 11:56 PM -21 2019 18 18 -1  
AVERAGE 37 25 12 6  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.52 1914 0.06 -0.06 0.00  
MONTH TO DATE 3.50 1.99 1.51 2.60  
SINCE DEC 1 6.47 4.10 2.37 4.76  
SINCE JAN 1 3.50 1.99 1.51 2.60  
 
SNOWFALL (IN)  
YESTERDAY 0.0 9.5 1914 0.4 -0.4 0.0  
MONTH TO DATE 16.1 11.3 4.8 9.9  
SINCE DEC 1 17.3 18.9 -1.6 13.1  
SINCE JUL 1 20.0 20.9 -0.9 14.2  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 28 40 -12 59  
MONTH TO DATE 1193 1228 -35 1005  
SINCE DEC 1 1991 2297 -306 2106  
SINCE JUL 1 2955 3448 -493 3171  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE DEC 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION SW (240)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION W (250)  
AVERAGE WIND SPEED 10.1  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 85 6:00 PM  
LOWEST 76 9:00 AM  
AVERAGE 81  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 32 56 1968  
MINIMUM TEMPERATURE (F) 19 -14 1985  
 
SUNRISE AND SUNSET  
FEBRUARY 1 2024......SUNRISE 7:05 AM CST SUNSET 5:06 PM CST  
FEBRUARY 2 2024......SUNRISE 7:04 AM CST SUNSET 5:07 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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