AFOS product CLIIAD
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CDUS41 KLWX 190522
CLIIAD

CLIMATE REPORT 
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 
1222 AM EST MON DEC 19 2022

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 18 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         42   2:22 PM  76    2006  46     -4       56        
  MINIMUM         28  11:48 PM   3    1989  29     -1       45        
  AVERAGE         35                        37     -2       51     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          2.92 1977   0.11  -0.11      T       
  MONTH TO DATE    2.34                      2.02   0.32     0.05     
  SINCE DEC 1      2.34                      2.02   0.32     0.05     
  SINCE JAN 1     38.15                     41.96  -3.81    34.55     

SNOWFALL (IN)                                                              
  YESTERDAY        0.0           2.0  2009   0.1   -0.1      0.0      
  MONTH TO DATE    0.0                       1.5   -1.5      0.0      
  SINCE DEC 1      0.0                       1.5   -1.5      0.0      
  SINCE JUL 1      T                         1.8   -1.8       T       
  SNOW DEPTH       0                                                 

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY       30                        28      2       14        
  MONTH TO DATE  454                       467    -13      345        
  SINCE DEC 1    454                       467    -13      345        
  SINCE JUL 1   1288                      1367    -79     1071        

 COOLING                                                              
  YESTERDAY        0                         0      0        0        
  MONTH TO DATE    0                         0      0        0        
  SINCE DEC 1      0                         0      0        0        
  SINCE JAN 1   1376                      1231    145     1480        
...................................................................


WIND (MPH)                                                            
  HIGHEST WIND SPEED    23   HIGHEST WIND DIRECTION    NW (300)       
  HIGHEST GUST SPEED    32   HIGHEST GUST DIRECTION     W (290)       
  AVERAGE WIND SPEED     9.7                                        


SKY COVER                                                             
  AVERAGE SKY COVER 0.7                                                 


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    79           5:00 AM                                      
 LOWEST     41           1:00 PM                                      
 AVERAGE    60                                                        

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   46        63      1967                      
 MINIMUM TEMPERATURE (F)   28        -2      1989                      


SUNRISE AND SUNSET                                                    
DECEMBER 19 2022......SUNRISE   7:24 AM EST   SUNSET   4:50 PM EST     
DECEMBER 20 2022......SUNRISE   7:24 AM EST   SUNSET   4:51 PM EST     


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




$$