427  
CDUS41 KLWX 212131  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
530 PM EDT SUN APR 21 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 21 2019
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 68 133 PM 89 1985 69 -1 63  
MINIMUM 46 542 AM 29 1983 44 2 30  
AVERAGE 57 56 1 47  
 
PRECIPITATION (IN)  
TODAY 0.00 2.20 1992 0.11 -0.11 0.00  
MONTH TO DATE 2.24 2.42 -0.18 1.63  
SINCE MAR 1 6.79 5.80 0.99 3.42  
SINCE JAN 1 14.25 11.22 3.03 9.81  
 
SNOWFALL (IN)  
TODAY 0.0 0.0 2001 0.0 0.0  
MONTH TO DATE 0.0 0.3 -0.3  
SINCE JUL 1 26.5 22.0 4.5  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 8 10 -2 18  
MONTH TO DATE 166 263 -97 325  
SINCE MAR 1 850 910 -60 1104  
SINCE JUL 1 4355 4500 -145 4455  
 
COOLING  
TODAY 0 1 -1 0  
MONTH TO DATE 18 9 9 15  
SINCE MAR 1 18 12 6 15  
SINCE JAN 1 18 12 6 20    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 6.5  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82 500 AM  
LOWEST 40 1200 PM  
AVERAGE 61  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 92 1985  
MINIMUM TEMPERATURE (F) 44 27 1975  
 
 
SUNRISE AND SUNSET  
APRIL 21 2019.........SUNRISE 625 AM EDT SUNSET 753 PM EDT  
APRIL 22 2019.........SUNRISE 624 AM EDT SUNSET 754 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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