725  
CDUS43 KLOT 272141  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
441 PM CDT THU MAR 27 2025  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MARCH 27 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 54 2:59 PM 82 1945 51 3 42  
MINIMUM 42 1:22 AM 12 1996 34 8 29  
AVERAGE 48 43 5 36  
 
PRECIPITATION (IN)  
TODAY T 1.28 1908 0.09 -0.09 0.00  
MONTH TO DATE 2.80 2.10 0.70 2.90  
SINCE MAR 1 2.80 2.10 0.70 2.90  
SINCE JAN 1 5.30 6.06 -0.76 7.05  
 
SNOWFALL (IN)  
TODAY 0.0 2.9 1942 0.1 -0.1 0.0  
MONTH TO DATE 2.8 5.1 -2.3 1.0  
SINCE MAR 1 2.8 5.1 -2.3 1.0  
SINCE JUL 1 17.6 36.7 -19.1 22.2  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 17 22 -5 29  
MONTH TO DATE 589 722 -133 562  
SINCE MAR 1 589 722 -133 562  
SINCE JUL 1 4724 5191 -467 4250  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 0  
SINCE JAN 1 0 0 0 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SW (210)  
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 7.6  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 65 2:00 AM  
LOWEST 50 10:00 AM  
AVERAGE 58  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 52 79 1986  
MINIMUM TEMPERATURE (F) 34 9 1887  
 
SUNRISE AND SUNSET  
MARCH 27 2025.........SUNRISE 6:42 AM CDT SUNSET 7:12 PM CDT  
MARCH 28 2025.........SUNRISE 6:41 AM CDT SUNSET 7:13 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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