AFOS product CLIIAD
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CDUS41 KLWX 180524
CLIIAD

CLIMATE REPORT 
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 
124 AM EDT SUN OCT 18 2020

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 17 2020...

CLIMATE NORMAL PERIOD: 1981 TO 2010
CLIMATE RECORD PERIOD: 1960 TO 2020


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 YESTERDAY                                                           
  MAXIMUM         62   3:56 PM  84    2016  68     -6       58        
  MINIMUM         37   6:48 AM  31    1981  43     -6       49        
                                      1982                           
  AVERAGE         50                        56     -6       54     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          1.11 1975   0.10  -0.10     0.00     
  MONTH TO DATE    1.33                      1.78  -0.45     1.14     
  SINCE SEP 1      3.61                      5.70  -2.09     1.55     
  SINCE JAN 1     37.83                     33.70   4.13    31.39     

SNOWFALL (IN)                                                              
  YESTERDAY        0.0          MM      MM   0.0    0.0      0.0      
  MONTH TO DATE    0.0                       0.0    0.0      0.0      
  SINCE SEP 1      0.0                       0.0    0.0      0.0      
  SINCE JUL 1      0.0                       0.0    0.0      0.0      
  SNOW DEPTH       0                                                 

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY       15                        10      5       11        
  MONTH TO DATE  107                       130    -23       72        
  SINCE SEP 1    168                       186    -18       77        
  SINCE JUL 1    168                       188    -20       77        

 COOLING                                                              
  YESTERDAY        0                         0      0        0        
  MONTH TO DATE    4                        16    -12       48        
  SINCE SEP 1    139                       157    -18      286        
  SINCE JAN 1   1391                      1173    218     1521        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     N (350)       
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION     N (350)       
  AVERAGE WIND SPEED     2.4                                        


SKY COVER                                                             
  AVERAGE SKY COVER 0.1                                                 


WEATHER CONDITIONS                                                    
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                         
  NO SIGNIFICANT WEATHER WAS OBSERVED.                                  


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97           7:00 AM                                      
 LOWEST     27           5:00 PM                                      
 AVERAGE    62                                                        

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   68        85      2016                      
 MINIMUM TEMPERATURE (F)   43        27      1976                      
                                             1982                     


SUNRISE AND SUNSET                                                    
OCTOBER 18 2020.......SUNRISE   7:23 AM EDT   SUNSET   6:26 PM EDT     
OCTOBER 19 2020.......SUNRISE   7:24 AM EDT   SUNSET   6:25 PM EDT     


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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