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781 
CDUS43 KLOT 100636
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL                                  
1236 AM CST SAT FEB 10 2018


................................... 

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR FEBRUARY 9 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2018


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         28   1059 AM  56    1886  33     -5       25       
  MINIMUM         18   1159 PM -21    1899  18      0       13       
  AVERAGE         23                        26     -3       19      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.57          1.56 1876   0.06   0.51     0.00    
  MONTH TO DATE    1.18                      0.47   0.71     0.47    
  SINCE DEC 1      3.31                      4.45  -1.14     5.11    
  SINCE JAN 1      2.72                      2.20   0.52     3.34    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        6.2          12.6  2010   0.4    5.8      0.0     
  MONTH TO DATE   13.8                       3.2   10.6       T      
  SINCE DEC 1     23.7                      22.2    1.5     18.3     
  SINCE JUL 1     23.8                      23.6    0.2     18.3     
  SNOW DEPTH       8                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       42                        39      3       46       
  MONTH TO DATE  429                       359     70      338       
  SINCE DEC 1   2839                      2793     46     2686       
  SINCE JUL 1   3882                      4049   -167     3515       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1      0                         0      0        0       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    21   HIGHEST WIND DIRECTION     N (20)       
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION    NE (30)       
  AVERAGE WIND SPEED    10.8                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 1.0                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  SNOW                                                               
  LIGHT SNOW                                                         
  FOG                                                                
  HAZE                                                               
  BLOWING SNOW                                                       

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    92           100 AM                                     
 LOWEST     68           300 PM                                     
 AVERAGE    80                                                       

..........................................................

                                                                     
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   34        63      1876                    
 MINIMUM TEMPERATURE (F)   19       -18      1899                    

                                                                     
SUNRISE AND SUNSET                                                   
FEBRUARY 10 2018......SUNRISE   654 AM CST   SUNSET   518 PM CST   
FEBRUARY 11 2018......SUNRISE   653 AM CST   SUNSET   520 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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