525  
CDUS43 KLOT 192137  
CLIMDW  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
437 PM CDT TUE AUG 19 2025  
   
...............................  
 
   
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR AUGUST 19 2025  
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 80 12:43 PM 99 1947 83 -3 77  
1983  
MINIMUM 73 12:43 AM 49 1933 66 7 64  
AVERAGE 77 74 3 71  
 
PRECIPITATION (IN)  
TODAY 0.02 1.39 2007 0.13 -0.11 0.00  
MONTH TO DATE 1.93 2.47 -0.54 2.86  
SINCE JUN 1 13.96 10.03 3.93 12.61  
SINCE JAN 1 23.53 22.51 1.02 28.59  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 9 25 -16 3  
SINCE JUL 1 0 1 -1 0  
 
COOLING  
TODAY 12 9 3 6  
MONTH TO DATE 268 196 72 195  
SINCE JUN 1 1036 771 265 869  
SINCE JAN 1 1087 853 234 982    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (340)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NE (30)  
AVERAGE WIND SPEED 8.5  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
THUNDERSTORM  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 91 2:00 AM  
LOWEST 69 2:00 PM  
AVERAGE 80  
   
......................................................  
 
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 82 98 1947  
MINIMUM TEMPERATURE (F) 66 47 1950  
 
SUNRISE AND SUNSET  
AUGUST 19 2025........SUNRISE 6:04 AM CDT SUNSET 7:45 PM CDT  
AUGUST 20 2025........SUNRISE 6:05 AM CDT SUNSET 7:43 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