AFOS product CLIIAD
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CDUS41 KLWX 040523
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1223 AM EST SAT JAN 4 2020


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 3 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         53   1149 AM  68    2000  42     11       49       
  MINIMUM         45    536 AM   1    2018  24     21       30       
  AVERAGE         49                        33     16       40      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.33          1.37 1999   0.07   0.26     0.00    
  MONTH TO DATE    0.33                      0.23   0.10     0.00    
  SINCE DEC 1      3.30                      3.19   0.11     5.76    
  SINCE JAN 1      0.33                      0.23   0.10     0.00    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY       MM             0.9  1989   0.2   MM                
  MONTH TO DATE    0.0                       0.5   -0.5              
  SINCE JUL 1      0.6                       4.5   -3.9              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       16                        32    -16       25       
  MONTH TO DATE   71                        96    -25       63       
  SINCE DEC 1    871                       978   -107      867       
  SINCE JUL 1   1734                      1894   -160     1825       
                                                                     
 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    12   HIGHEST WIND DIRECTION     S (190)      
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION    SW (210)      
  AVERAGE WIND SPEED     4.9                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.9                                              

                                                                     
WEATHER CONDITIONS                                                  
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                        
  RAIN                                                               
  LIGHT RAIN                                                         
  FOG                                                                

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    96           700 PM                                     
 LOWEST     66           200 AM                                     
 AVERAGE    81                                                       

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

                                                                     
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   42        74      1997                    
 MINIMUM TEMPERATURE (F)   24         5      1979                    

                                                                     
SUNRISE AND SUNSET                                                   
JANUARY  4 2020.......SUNRISE   729 AM EST   SUNSET   501 PM EST   
JANUARY  5 2020.......SUNRISE   729 AM EST   SUNSET   501 PM EST   

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




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