AFOS product CLIDCA
Dates interpreted at 00:00 UTC
Download date range (UTC midnight)
Bulk Download Bulk Download
082 
CDUS41 KLWX 200530
CLIDCA


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC                  
1229 AM EST TUE DEC 20 2016


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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR DECEMBER 19 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2016


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST     
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR     
                                                  NORMAL             
..................................................................
TEMPERATURE (F)                                                     
 YESTERDAY                                                           
  MAXIMUM         39    213 PM  74    1924  46     -7       45       
  MINIMUM         31   1159 PM   6    1884  32     -1       30       
  AVERAGE         35                        39     -4       38      
                                                                     
PRECIPITATION (IN)                                                   
  YESTERDAY        0.00          1.34 2009   0.10  -0.10     0.00    
  MONTH TO DATE    1.83                      1.97  -0.14     1.62    
  SINCE DEC 1      1.83                      1.97  -0.14     1.62    
  SINCE JAN 1     30.92                     38.66  -7.74    41.80    
                                                                     
SNOWFALL (IN)                                                        
  YESTERDAY        0.0          15.0  2009   0.0    0.0              
  MONTH TO DATE    T                         1.2   -1.2              
  SINCE JUL 1      T                         1.7   -1.7              
  SNOW DEPTH       0                                                 
                                                                     
DEGREE DAYS                                                          
 HEATING                                                             
  YESTERDAY       30                        26      4       27       
  MONTH TO DATE  441                       453    -12      293       
  SINCE DEC 1    441                       453    -12      293       
  SINCE JUL 1    928                      1148   -220      828       
                                                                     
 COOLING                                                             
  YESTERDAY        0                         0      0        0       
  MONTH TO DATE    0                         0      0        0       
  SINCE DEC 1      0                         0      0        0       
  SINCE JAN 1   1994                      1549    445     1998       
..................................................................


WIND (MPH)                                                           
  HIGHEST WIND SPEED    17   HIGHEST WIND DIRECTION     N (10)       
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION     N (20)       
  AVERAGE WIND SPEED     9.6                                         

                                                                     
SKY COVER                                                            
  POSSIBLE SUNSHINE  MM                                              
  AVERAGE SKY COVER 0.8                                              

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

                                                                     
RELATIVE HUMIDITY (PERCENT)                                          
 HIGHEST    59           500 AM                                     
 LOWEST     40           100 PM                                     
 AVERAGE    50                                                       

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

                                                                     
THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR                    
 MAXIMUM TEMPERATURE (F)   45        66      1889                    
                                             1877                    
 MINIMUM TEMPERATURE (F)   31         5      1942                    

                                                                     
SUNRISE AND SUNSET                                                   
DECEMBER 20 2016......SUNRISE   723 AM EST   SUNSET   449 PM EST   
DECEMBER 21 2016......SUNRISE   723 AM EST   SUNSET   450 PM EST   

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




$$