AFOS product CLIIAD
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CDUS41 KLWX 110523
CLIIAD

CLIMATE REPORT 
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 
123 AM EDT SUN OCT 11 2020

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 10 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         74  12:25 PM  87    2017  70      4       75        
  MINIMUM         55   5:41 AM  31    1972  46      9       52        
                                      1978                           
  AVERAGE         65                        58      7       64     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          2.22 2013   0.11  -0.11     0.00     
  MONTH TO DATE    0.15                      1.06  -0.91     0.10     
  SINCE SEP 1      2.43                      4.98  -2.55     0.51     
  SINCE JAN 1     36.65                     32.98   3.67    30.35     

SNOWFALL (IN)                                                              
  YESTERDAY        0.0           1.3  1979   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                         8     -8        1        
  MONTH TO DATE   66                        66      0       15        
  SINCE SEP 1    127                       122      5       20        
  SINCE JUL 1    127                       124      3       20        

 COOLING                                                              
  YESTERDAY        0                         1     -1        0        
  MONTH TO DATE    1                        12    -11       48        
  SINCE SEP 1    136                       153    -17      286        
  SINCE JAN 1   1388                      1169    219     1521        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    18   HIGHEST WIND DIRECTION     S (200)       
  HIGHEST GUST SPEED    25   HIGHEST GUST DIRECTION     S (190)       
  AVERAGE WIND SPEED     8.1                                        


SKY COVER                                                             
  AVERAGE SKY COVER 0.9                                                 


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    90           6:00 AM                                      
 LOWEST     68          12:00 PM                                      
 AVERAGE    79                                                        

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   70        86      2010                      
 MINIMUM TEMPERATURE (F)   45        28      1972                      


SUNRISE AND SUNSET                                                    
OCTOBER 11 2020.......SUNRISE   7:16 AM EDT   SUNSET   6:36 PM EDT     
OCTOBER 12 2020.......SUNRISE   7:17 AM EDT   SUNSET   6:35 PM EDT     


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




$$