019  
CDUS41 KLWX 170523  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
123 AM EDT SUN MAR 17 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MARCH 16 2019
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1960 TO 2019  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 54 MM 81 1990 55 -1 45  
MINIMUM 39 MM 16 1969 33 6 25  
AVERAGE 47 44 3 35  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.56 2007 0.12 -0.12 T  
MONTH TO DATE 1.80 1.59 0.21 0.24  
SINCE MAR 1 1.80 1.59 0.21 0.24  
SINCE JAN 1 9.26 7.01 2.25 6.63  
 
SNOWFALL (IN)  
YESTERDAY 0.0 6.6 2014 0.1 -0.1  
MONTH TO DATE 1.6 1.9 -0.3  
SINCE JUL 1 26.5 20.8 5.7  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 18 21 -3 30  
MONTH TO DATE 386 374 12 429  
SINCE MAR 1 386 374 12 429  
SINCE JUL 1 3891 3964 -73 3780  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 0 0 0  
SINCE JAN 1 0 0 0 5    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION NW (300)  
AVERAGE WIND SPEED 18.4  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.4  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 50 200 AM  
LOWEST 26 300 PM  
AVERAGE 38  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 56 77 1963  
MINIMUM TEMPERATURE (F) 33 16 1970  
 
 
SUNRISE AND SUNSET  
MARCH 17 2019.........SUNRISE 718 AM EDT SUNSET 719 PM EDT  
MARCH 18 2019.........SUNRISE 717 AM EDT SUNSET 720 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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