529  
CDUS43 KLOT 072250  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
450 PM CST FRI MAR 07 2025  
   
...............................  
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MARCH 7 2025  
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
SNOWFALL VALID THROUGH NOON 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 40 9:51 AM 78 2000 43 -3 51  
MINIMUM 34 2:05 PM -2 1943 28 6 36  
AVERAGE 37 36 1 44  
 
PRECIPITATION (IN)  
TODAY 0.13 1.15 1872 0.08 0.05 0.00  
MONTH TO DATE 1.14 0.56 0.58 0.82  
SINCE MAR 1 1.14 0.56 0.58 0.82  
SINCE JAN 1 3.64 4.52 -0.88 4.97  
 
SNOWFALL (IN)  
TODAY T 10.9 1931 0.2 -0.2 0.0  
MONTH TO DATE T 1.8 -1.8 0.0  
SINCE MAR 1 T 1.8 -1.8 0.0  
SINCE JUL 1 14.8 33.4 -18.6 21.2  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 28 29 -1 21  
MONTH TO DATE 200 212 -12 123  
SINCE MAR 1 200 212 -12 123  
SINCE JUL 1 4335 4681 -346 3811  
 
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 10 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION SW (230)  
AVERAGE WIND SPEED 4.4  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
LIGHT SNOW  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 92 2:00 PM  
LOWEST 64 12:00 AM  
AVERAGE 78  
   
......................................................  
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 44 78 2000  
MINIMUM TEMPERATURE (F) 29 -7 1943  
 
SUNRISE AND SUNSET  
MARCH 7 2025.........SUNRISE 6:16 AM CST SUNSET 5:49 PM CST  
MARCH 8 2025.........SUNRISE 6:15 AM CST SUNSET 5:50 PM CST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
 
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