AFOS product CLIIAD
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CDUS41 KLWX 010529
CLIIAD

CLIMATE REPORT 
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 
1229 AM EST TUE DEC 01 2020

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 30 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  12:13 PM  72    1991  51     11       44        
  MINIMUM         47  11:59 PM  11    1976  31     16       38        
  AVERAGE         55                        41     14       41     

PRECIPITATION (IN)                                                    
  YESTERDAY        1.38R         1.31 2016   0.12   1.26     0.00     
  MONTH TO DATE    3.61                      3.41   0.20     1.62     
  SINCE SEP 1      9.43                     10.58  -1.15     8.00     
  SINCE JAN 1     43.65                     38.58   5.07    37.84     

SNOWFALL (IN)                                                              
  YESTERDAY        0.0          11.4  1967   0.0    0.0      0.0      
  MONTH TO DATE    0.0                       0.5   -0.5       T       
  SINCE SEP 1      0.0                       0.5   -0.5       T       
  SINCE JUL 1      0.0                       0.5   -0.5       T       
  SNOW DEPTH       0                                                 

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY       10                        24    -14       24        
  MONTH TO DATE  400                       559   -159      678        
  SINCE SEP 1    667                       913   -246      863        
  SINCE JUL 1    667                       915   -248      863        

 COOLING                                                              
  YESTERDAY        0                         0      0        0        
  MONTH TO DATE    1                         2     -1        0        
  SINCE SEP 1    154                       162     -8      289        
  SINCE JAN 1   1406                      1178    228     1524        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION    NW (330)       
  HIGHEST GUST SPEED    23   HIGHEST GUST DIRECTION    NW (330)       
  AVERAGE WIND SPEED     6.9                                        


SKY COVER                                                             
  AVERAGE SKY COVER 0.9                                                 


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97          10:00 AM                                      
 LOWEST     63          11:00 PM                                      
 AVERAGE    80                                                        

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   51        75      2006                      
 MINIMUM TEMPERATURE (F)   31         4      1967                      


SUNRISE AND SUNSET                                                    
DECEMBER  1 2020......SUNRISE   7:10 AM EST   SUNSET   4:48 PM EST     
DECEMBER  2 2020......SUNRISE   7:11 AM EST   SUNSET   4:48 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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