226  
CDUS43 KLOT 220631  
CLIMDW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
131 AM CDT TUE APR 22 2025  
   
...............................  
 
   
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR APRIL 21 2025  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1928 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 64 2:00 AM 86 1985 62 2 59  
MINIMUM 46 11:59 PM 28 1943 43 3 35  
AVERAGE 55 53 2 47  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 1.08 1973 0.13 -0.12 0.00  
MONTH TO DATE 2.66 2.30 0.36 1.54  
SINCE MAR 1 6.05 4.18 1.87 5.54  
SINCE JAN 1 7.41 7.12 0.29 8.52  
 
DEGREE DAYS  
HEATING  
YESTERDAY 10 13 -3 18  
MONTH TO DATE 331 341 -10 265  
SINCE MAR 1 920 1129 -209 867  
SINCE JUL 1 4858 5452 -594 4416  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 5 0 5 7  
SINCE MAR 1 5 2 3 7  
SINCE JAN 1 5 2 3 7    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION W (260)  
HIGHEST GUST SPEED 49 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 17.0  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 1:00 AM  
LOWEST 55 8:00 PM  
AVERAGE 69  
   
......................................................  
 
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 63 91 1980  
MINIMUM TEMPERATURE (F) 44 25 1936  
 
SUNRISE AND SUNSET  
APRIL 22 2025.........SUNRISE 6:00 AM CDT SUNSET 7:40 PM CDT  
APRIL 23 2025.........SUNRISE 5:58 AM CDT SUNSET 7:41 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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