AFOS product CLIIAD
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CDUS41 KLWX 290525
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1224 AM EST WED JAN 29 2020


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 28 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         45    333 PM  68    2002  43      2       38       
  MINIMUM         38    749 AM -17    1987  24     14       27       
  AVERAGE         42                        34      8       33      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.64 1998   0.10  -0.10     0.00    
  MONTH TO DATE    3.25                      2.40   0.85     3.71    
  SINCE DEC 1      6.22                      5.36   0.86     9.47    
  SINCE JAN 1      3.25                      2.40   0.85     3.71    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0           6.7  1994   0.3   -0.3              
  MONTH TO DATE    2.3                       6.4   -4.1              
  SINCE JUL 1      2.9                      10.4   -7.5              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       23                        31     -8       32       
  MONTH TO DATE  712                       894   -182      865       
  SINCE DEC 1   1512                      1776   -264     1669       
  SINCE JUL 1   2375                      2692   -317     2627       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1      0                         0      0        0       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    22   HIGHEST WIND DIRECTION    NW (310)      
  HIGHEST GUST SPEED    27   HIGHEST GUST DIRECTION    NW (310)      
  AVERAGE WIND SPEED    12.5                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.9                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    64          1200 AM                                     
 LOWEST     49           100 PM                                     
 AVERAGE    57                                                       

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

                                                                     
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   43        75      1975                    
 MINIMUM TEMPERATURE (F)   24        -1      1987                    
                                             1963                    

                                                                     
SUNRISE AND SUNSET                                                   
JANUARY 29 2020.......SUNRISE   719 AM EST   SUNSET   527 PM EST   
JANUARY 30 2020.......SUNRISE   718 AM EST   SUNSET   528 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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