AFOS product CLIIAD
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CDUS41 KLWX 040522
CLIIAD

CLIMATE REPORT 
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 
1222 AM EST FRI DEC 04 2020

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 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   2:34 PM  74    1998  50      3       47        
  MINIMUM         25   7:20 AM   7    1976  30     -5       33        
  AVERAGE         39                        40     -1       40     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          1.14 1967   0.11  -0.11     0.00     
  MONTH TO DATE    0.01                      0.33  -0.32     0.40     
  SINCE DEC 1      0.01                      0.33  -0.32     0.40     
  SINCE JAN 1     43.66                     38.91   4.75    38.24     

SNOWFALL (IN)                                                              
  YESTERDAY        0.0           T    1983   0.0    0.0      0.0      
                                      1989                           
                                      2005                           
  MONTH TO DATE    0.0                       0.2   -0.2       T       
  SINCE DEC 1      0.0                       0.2   -0.2       T       
  SINCE JUL 1      0.0                       0.7   -0.7       T       
  SNOW DEPTH       0                                                 

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY       26                        25      1       25        
  MONTH TO DATE   72                        73     -1       74        
  SINCE DEC 1     72                        73     -1       74        
  SINCE JUL 1    739                       989   -250      937        

 COOLING                                                              
  YESTERDAY        0                         0      0        0        
  MONTH TO DATE    0                         0      0        0        
  SINCE DEC 1      0                         0      0        0        
  SINCE JAN 1   1406                      1178    228     1524        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION     S (180)       
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION     S (190)       
  AVERAGE WIND SPEED     2.6                                        


SKY COVER                                                             
  AVERAGE SKY COVER 0.5                                                 


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    81           7:00 AM                                      
 LOWEST     27           3:00 PM                                      
 AVERAGE    54                                                        

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   50        75      1998                      
 MINIMUM TEMPERATURE (F)   30        10      1966                      


SUNRISE AND SUNSET                                                    
DECEMBER  4 2020......SUNRISE   7:13 AM EST   SUNSET   4:47 PM EST     
DECEMBER  5 2020......SUNRISE   7:14 AM EST   SUNSET   4:47 PM EST     


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




$$