748  
CDUS43 KLOT 050640  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
1240 AM CST FRI MAR 05 2021  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MARCH 4 2021
 
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1871 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 37 2:20 PM 73 1983 42 -5 49  
MINIMUM 27 11:59 PM -12 1873 26 1 32  
AVERAGE 32 34 -2 41  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.75 1985 0.08 -0.08 T  
MONTH TO DATE 0.00 0.31 -0.31 T  
SINCE MAR 1 0.00 0.31 -0.31 T  
SINCE JAN 1 3.20 3.83 -0.63 3.57  
 
SNOWFALL (IN)  
YESTERDAY 0.0 8.5 1982 0.3 -0.3 0.0  
MONTH TO DATE 0.0 1.0 -1.0 T  
SINCE MAR 1 0.0 1.0 -1.0 T  
SINCE JUL 1 47.0 30.5 16.5 26.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 33 31 2 24  
MONTH TO DATE 119 128 -9 91  
SINCE MAR 1 119 128 -9 91  
SINCE JUL 1 4459 4862 -403 4477  
 
COOLING  
YESTERDAY 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 24 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION N (10)  
AVERAGE WIND SPEED 13.4  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 88 1:00 AM  
LOWEST 59 3:00 PM  
AVERAGE 74  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 42 75 1983  
MINIMUM TEMPERATURE (F) 26 0 1873  
1978  
 
SUNRISE AND SUNSET  
MARCH 5 2021.........SUNRISE 6:20 AM CST SUNSET 5:47 PM CST  
MARCH 6 2021.........SUNRISE 6:18 AM CST SUNSET 5:48 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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