242  
CDUS43 KLOT 220631  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
131 AM CDT TUE APR 22 2025  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 21 2025  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1871 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 61 2:14 AM 88 1985 61 0 58  
MINIMUM 45 11:59 PM 27 1986 42 3 33  
AVERAGE 53 52 1 46  
 
PRECIPITATION (IN)  
YESTERDAY 0.03 1.08 1973 0.13 -0.10 0.00  
MONTH TO DATE 1.99 2.48 -0.49 2.04  
SINCE MAR 1 4.98 4.93 0.05 5.63  
SINCE JAN 1 7.48 8.89 -1.41 9.78  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.6 1903 0.0 0.0 0.0  
MONTH TO DATE T 1.1 -1.1 T  
SINCE MAR 1 2.8 6.6 -3.8 1.0  
SINCE JUL 1 17.6 38.2 -20.6 22.2  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 12 14 -2 19  
MONTH TO DATE 366 361 5 287  
SINCE MAR 1 996 1169 -173 929  
SINCE JUL 1 5131 5638 -507 4617  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 3 0 3 3  
SINCE MAR 1 3 2 1 3  
SINCE JAN 1 3 2 1 3    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 31 HIGHEST WIND DIRECTION W (250)  
HIGHEST GUST SPEED 46 HIGHEST GUST DIRECTION SW (220)  
AVERAGE WIND SPEED 15.1  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 12:00 AM  
LOWEST 57 7:00 PM  
AVERAGE 75  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 62 91 1980  
MINIMUM TEMPERATURE (F) 43 24 1986  
 
SUNRISE AND SUNSET  
APRIL 22 2025.........SUNRISE 6:00 AM CDT SUNSET 7:41 PM CDT  
APRIL 23 2025.........SUNRISE 5:58 AM CDT SUNSET 7:42 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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