937  
CDUS43 KLOT 162138  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
438 PM CDT FRI MAY 16 2025  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MAY 16 2025
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 87 2:59 PM 94 1962 71 16 75  
MINIMUM 63 4:49 AM 33 1997 51 12 52  
AVERAGE 75 61 14 64  
 
PRECIPITATION (IN)  
TODAY 0.00 1.38 1974 0.15 -0.15 0.48  
MONTH TO DATE 0.33 2.37 -2.04 3.05  
SINCE MAR 1 5.98 8.57 -2.59 10.11  
SINCE JAN 1 8.48 12.53 -4.05 14.26  
 
SNOWFALL (IN)  
TODAY 0.0 T 2019 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE MAR 1 2.8 6.8 -4.0 1.0  
SINCE JUL 1 17.6 38.4 -20.8 22.2  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 6 -6 1  
MONTH TO DATE 106 129 -23 54  
SINCE MAR 1 1164 1405 -241 1067  
SINCE JUL 1 5299 5874 -575 4755  
 
COOLING  
TODAY 10 2 8 0  
MONTH TO DATE 27 20 7 16  
SINCE MAR 1 35 30 5 25  
SINCE JAN 1 35 30 5 25    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION S (160)  
HIGHEST GUST SPEED 43 HIGHEST GUST DIRECTION S (160)  
AVERAGE WIND SPEED 12.2  
 
SKY COVER  
AVERAGE SKY COVER 0.1  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 60 3:00 AM  
LOWEST 22 3:00 PM  
AVERAGE 41  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 94 1962  
MINIMUM TEMPERATURE (F) 51 36 1973  
2002  
 
SUNRISE AND SUNSET  
MAY 16 2025...........SUNRISE 5:30 AM CDT SUNSET 8:07 PM CDT  
MAY 17 2025...........SUNRISE 5:29 AM CDT SUNSET 8:08 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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