AFOS product CLIIAD
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CDUS41 KLWX 180523
CLIIAD

CLIMATE REPORT 
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 
123 AM EDT SUN SEP 18 2022

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 17 2022...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2022


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST      
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL           
...................................................................
TEMPERATURE (F)                                                          
 YESTERDAY                                                           
  MAXIMUM         81   2:58 PM  97    1991  79      2       82        
  MINIMUM         55   6:14 AM  35    1986  58     -3       70        
  AVERAGE         68                        68      0       76     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          1.71 2004   0.14  -0.14      T       
  MONTH TO DATE    2.78                      2.18   0.60     3.04     
  SINCE SEP 1      2.78                      2.18   0.60     3.04     
  SINCE JAN 1     30.28                     31.40  -1.12    27.63     

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 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                         1     -1        0        
  MONTH TO DATE    0                         8     -8        0        
  SINCE SEP 1      0                         8     -8        0        
  SINCE JUL 1      0                         9     -9        0        

 COOLING                                                              
  YESTERDAY        3                         5     -2       11        
  MONTH TO DATE  144                       112     32      128        
  SINCE SEP 1    144                       112     32      128        
  SINCE JAN 1   1322                      1168    154     1380        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    12   HIGHEST WIND DIRECTION     S (190)       
  HIGHEST GUST SPEED    17   HIGHEST GUST DIRECTION     S (200)       
  AVERAGE WIND SPEED     2.9                                        


SKY COVER                                                             
  AVERAGE SKY COVER 0.1                                                 


WEATHER CONDITIONS                                                    
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.                         
  FOG                                                                 


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    97           4:00 AM                                      
 LOWEST     44           1:00 PM                                      
 AVERAGE    71                                                        

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   79        91      1978                      
 MINIMUM TEMPERATURE (F)   57        37      1990                      


SUNRISE AND SUNSET                                                    
SEPTEMBER 18 2022.....SUNRISE   6:54 AM EDT   SUNSET   7:13 PM EDT     
SEPTEMBER 19 2022.....SUNRISE   6:55 AM EDT   SUNSET   7:12 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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