884  
CDUS43 KLOT 202137  
CLIORD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE CHICAGO IL  
437 PM CDT THU APR 20 2023  
   
...............................
 
 
   
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 20 2023
 
 
VALID TODAY AS OF 0400 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1871 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 79 2:59 PM 87 1985 61 18 52  
MINIMUM 49 2:18 AM 24 1897 42 7 41  
AVERAGE 64 51 13 47  
 
PRECIPITATION (IN)  
TODAY 0.12 2.37 2000 0.14 -0.02 0.24  
MONTH TO DATE 1.51 2.35 -0.84 2.47  
SINCE MAR 1 5.31 4.80 0.51 6.16  
SINCE JAN 1 11.74 8.76 2.98 9.59  
 
SNOWFALL (IN)  
TODAY 0.0 0.2 1943 0.1 -0.1 0.0  
MONTH TO DATE 0.4 1.1 -0.7 0.4  
SINCE MAR 1 2.2 6.6 -4.4 4.2  
SINCE JUL 1 20.1 38.2 -18.1 32.8  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 1 14 -13 18  
MONTH TO DATE 229 347 -118 410  
SINCE MAR 1 1031 1155 -124 1157  
SINCE JUL 1 5066 5624 -558 5374  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 25 0 25 0  
SINCE MAR 1 25 2 23 0  
SINCE JAN 1 25 2 23 0    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 42 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 11.9  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
THUNDERSTORM  
HEAVY RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 83 4:00 AM  
LOWEST 41 3:00 PM  
AVERAGE 62  
   
......................................................
 
 
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 61 88 1985  
MINIMUM TEMPERATURE (F) 42 27 1986  
 
SUNRISE AND SUNSET  
APRIL 20 2023.........SUNRISE 6:04 AM CDT SUNSET 7:38 PM CDT  
APRIL 21 2023.........SUNRISE 6:02 AM CDT SUNSET 7:39 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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