102  
CDUS43 KLOT 120634  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
134 AM CDT SAT APR 12 2025  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 11 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 52 4:40 PM 90 1930 57 -5 60  
MINIMUM 33 4:36 AM 25 1882 39 -6 49  
1973  
1989  
AVERAGE 43 48 -5 55  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.41 1871 0.11 -0.11 0.01  
MONTH TO DATE 1.50 1.21 0.29 1.59  
SINCE MAR 1 4.49 3.66 0.83 5.18  
SINCE JAN 1 6.99 7.62 -0.63 9.33  
 
SNOWFALL (IN)  
YESTERDAY 0.0 3.0 2007 0.0 0.0 0.0  
MONTH TO DATE T 0.7 -0.7 T  
SINCE MAR 1 2.8 6.2 -3.4 1.0  
SINCE JUL 1 17.6 37.8 -20.2 22.2  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 22 17 5 10  
MONTH TO DATE 243 209 34 193  
SINCE MAR 1 873 1017 -144 835  
SINCE JUL 1 5008 5486 -478 4523  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 2 -2 0  
SINCE JAN 1 0 2 -2 0    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION NE (40)  
HIGHEST GUST SPEED 28 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 8.1  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 88 4:00 AM  
LOWEST 38 3:00 PM  
AVERAGE 63  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 58 86 1971  
1977  
MINIMUM TEMPERATURE (F) 39 21 1939  
1957  
 
SUNRISE AND SUNSET  
APRIL 12 2025.........SUNRISE 6:16 AM CDT SUNSET 7:30 PM CDT  
APRIL 13 2025.........SUNRISE 6:14 AM CDT SUNSET 7:31 PM CDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.
The Nexlab IL Page
The Nexlab IN Page
Main Text Page