AFOS product CLIIAD
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CDUS41 KLWX 090523
CLIIAD

CLIMATE REPORT 
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 
123 AM EDT SAT MAY 09 2020

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 8 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         63  11:40 AM  90    2000  73    -10       68        
  MINIMUM         39  11:59 PM  29    1974  49    -10       60        
  AVERAGE         51                        61    -10       64     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.14          2.10 1960   0.13   0.01      T       
  MONTH TO DATE    1.55                      1.06   0.49     2.20     
  SINCE MAR 1      9.10                      7.91   1.19     9.57     
  SINCE JAN 1     15.67                     13.33   2.34    17.03     

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 MAR 1      T                         3.1   -3.1      1.6      
  SINCE JUL 1      2.9                      22.0  -19.1     26.5      
  SNOW DEPTH       0                                                 

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY       14                         6      8        1        
  MONTH TO DATE   65                        51     14        6        
  SINCE MAR 1    895                      1033   -138      888        
  SINCE JUL 1   4039                      4623   -584     4393        

 COOLING                                                              
  YESTERDAY        0                         1     -1        0        
  MONTH TO DATE    4                         8     -4       21        
  SINCE MAR 1      7                        28    -21       43        
  SINCE JAN 1      7                        28    -21       43        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    29   HIGHEST WIND DIRECTION    NW (330)       
  HIGHEST GUST SPEED    40   HIGHEST GUST DIRECTION    NW (320)       
  AVERAGE WIND SPEED    10.1                                        


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    86           8:00 PM                                      
 LOWEST     41          12:00 PM                                      
 AVERAGE    64                                                        

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   73        91      1963                      
 MINIMUM TEMPERATURE (F)   49        30      1976                      


SUNRISE AND SUNSET                                                    
MAY  9 2020...........SUNRISE   6:02 AM EDT   SUNSET   8:11 PM EDT     
MAY 10 2020...........SUNRISE   6:01 AM EDT   SUNSET   8:12 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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