772  
CDUS43 KLOT 050637  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
137 AM CDT SAT APR 05 2025  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 4 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 49 9:49 AM 79 1921 54 -5 45  
1929  
MINIMUM 38 4:23 AM 16 1975 37 1 36  
AVERAGE 44 46 -2 41  
 
PRECIPITATION (IN)  
YESTERDAY 0.06 1.90 1947 0.11 -0.05 0.07  
MONTH TO DATE 1.31 0.42 0.89 1.21  
SINCE MAR 1 4.30 2.87 1.43 4.80  
SINCE JAN 1 6.80 6.83 -0.03 8.95  
 
SNOWFALL (IN)  
YESTERDAY 0.0 6.4 1920 0.1 -0.1 T  
MONTH TO DATE 0.0 0.4 -0.4 T  
SINCE MAR 1 2.8 5.9 -3.1 1.0  
SINCE JUL 1 17.6 37.5 -19.9 22.2  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 21 20 1 24  
MONTH TO DATE 73 81 -8 96  
SINCE MAR 1 703 889 -186 738  
SINCE JUL 1 4838 5358 -520 4426  
 
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 21 HIGHEST WIND DIRECTION N (10)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION E (80)  
AVERAGE WIND SPEED 11.4  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 96 11:00 PM  
LOWEST 54 9:00 AM  
AVERAGE 75  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 55 85 1988  
MINIMUM TEMPERATURE (F) 37 18 1979  
1995  
 
SUNRISE AND SUNSET  
APRIL 5 2025.........SUNRISE 6:27 AM CDT SUNSET 7:22 PM CDT  
APRIL 6 2025.........SUNRISE 6:25 AM CDT SUNSET 7:23 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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