AFOS product CLIIAD
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CDUS41 KLWX 290537
CLIIAD

CLIMATE REPORT 
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 
1237 AM EST THU DEC 29 2022

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR DECEMBER 28 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         52   3:27 PM  73    1984  44      8       57        
  MINIMUM         21   7:18 AM   8    1966  27     -6       35        
  AVERAGE         37                        35      2       46     

PRECIPITATION (IN)                                                    
  YESTERDAY        0.00          1.74 1967   0.10  -0.10     0.02     
  MONTH TO DATE    4.70                      3.03   1.67     0.21     
  SINCE DEC 1      4.70                      3.03   1.67     0.21     
  SINCE JAN 1     40.51                     42.97  -2.46    34.71     

SNOWFALL (IN)                                                              
  YESTERDAY        0.0           2.3  1993   0.1   -0.1      0.0      
  MONTH TO DATE    T                         2.4   -2.4      0.0      
  SINCE DEC 1      T                         2.4   -2.4      0.0      
  SINCE JUL 1      T                         2.7   -2.7       T       
  SNOW DEPTH       0                                                 

DEGREE DAYS                                                           
 HEATING                                                              
  YESTERDAY       28                        30     -2       19        
  MONTH TO DATE  808                       756     52      579        
  SINCE DEC 1    808                       756     52      579        
  SINCE JUL 1   1642                      1656    -14     1305        

 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    10   HIGHEST WIND DIRECTION     S (200)       
  HIGHEST GUST SPEED    15   HIGHEST GUST DIRECTION    SW (220)       
  AVERAGE WIND SPEED     4.4                                        


SKY COVER                                                             
  AVERAGE SKY COVER 0.2                                                 


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


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    78           2:00 AM                                      
 LOWEST     38           4:00 PM                                      
 AVERAGE    58                                                        

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                     
 MAXIMUM TEMPERATURE (F)   44        78      1984                      
 MINIMUM TEMPERATURE (F)   27         7      1977                      


SUNRISE AND SUNSET                                                    
DECEMBER 29 2022......SUNRISE   7:28 AM EST   SUNSET   4:56 PM EST     
DECEMBER 30 2022......SUNRISE   7:28 AM EST   SUNSET   4:57 PM EST     


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




$$