AFOS product CLIIAD
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CDUS41 KLWX 070521
CLIIAD

CLIMATE REPORT 
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 
121 AM EDT MON SEP 07 2020

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 6 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         83   2:51 PM  98    1983  83      0       79        
  MINIMUM         55   5:18 AM  45    1972  60     -5       60        
                                      1976                           
  AVERAGE         69                        72     -3       70     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          5.11 2008   0.11  -0.11     0.00     
  MONTH TO DATE    0.28                      0.70  -0.42     0.32     
  SINCE SEP 1      0.28                      0.70  -0.42     0.32     
  SINCE JAN 1     34.50                     28.70   5.80    30.16     

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        0                         0      0        0        
  MONTH TO DATE    0                         0      0        0        
  SINCE SEP 1      0                         0      0        0        
  SINCE JUL 1      0                         2     -2        0        

 COOLING                                                              
  YESTERDAY        4                         7     -3        5        
  MONTH TO DATE   57                        46     11       64        
  SINCE SEP 1     57                        46     11       64        
  SINCE JAN 1   1309                      1062    247     1299        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION     S (180)       
  HIGHEST GUST SPEED    19   HIGHEST GUST DIRECTION     S (190)       
  AVERAGE WIND SPEED     4.0                                        


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           6:00 AM                                      
 LOWEST     41           2:00 PM                                      
 AVERAGE    69                                                        

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   83        95      1983                      
                                             1985                     
 MINIMUM TEMPERATURE (F)   60        41      1976                      


SUNRISE AND SUNSET                                                    
SEPTEMBER  7 2020.....SUNRISE   6:44 AM EDT   SUNSET   7:30 PM EDT     
SEPTEMBER  8 2020.....SUNRISE   6:45 AM EDT   SUNSET   7:28 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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