585  
CDUS43 KLOT 230633  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
133 AM CDT THU MAR 23 2017  
 
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR MARCH 22 2017
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1871 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 37 105 PM 83 2012 49 -12 63  
MINIMUM 28 1110 PM -1 1888 31 -3 40  
AVERAGE 33 40 -7 52  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.13 1993 0.09 -0.09 0.00  
MONTH TO DATE 1.01 1.72 -0.71 1.30  
SINCE MAR 1 1.01 1.72 -0.71 1.30  
SINCE JAN 1 5.40 5.24 0.16 3.37  
 
SNOWFALL (IN)  
YESTERDAY 0.0 3.4 1993 0.1 -0.1 0.0  
MONTH TO DATE 7.8 4.5 3.3 2.6  
SINCE MAR 1 7.8 4.5 3.3 2.6  
SINCE JUL 1 26.1 34.0 -7.9 30.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 32 25 7 13  
MONTH TO DATE 615 632 -17 482  
SINCE MAR 1 615 632 -17 482  
SINCE JUL 1 4540 5366 -826 4490  
 
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 23 HIGHEST WIND DIRECTION NE (30)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 11.9  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 63 1000 PM  
LOWEST 44 100 PM  
AVERAGE 54  
   
......................................................
 
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 50 80 1907  
MINIMUM TEMPERATURE (F) 31 9 1940  
 
 
SUNRISE AND SUNSET  
MARCH 23 2017.........SUNRISE 649 AM CDT SUNSET 707 PM CDT  
MARCH 24 2017.........SUNRISE 648 AM CDT SUNSET 709 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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