006  
CDUS41 KLWX 121330  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
929 AM EDT FRI APR 12 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 11 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 60 402 PM 87 1977 65 -5 59  
MINIMUM 45 553 AM 25 1971 41 4 33  
1970  
1960  
AVERAGE 53 53 0 46  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.74 2009 0.12 -0.12 0.00  
MONTH TO DATE 0.38 1.33 -0.95 0.15  
SINCE MAR 1 4.93 4.71 0.22 1.94  
SINCE JAN 1 12.39 10.13 2.26 8.33  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 1986 0.0 0.0  
1973  
MONTH TO DATE 0.0 0.2 -0.2  
SINCE JUL 1 26.5 21.9 4.6  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 12 12 0 19  
MONTH TO DATE 134 154 -20 197  
SINCE MAR 1 818 801 17 976  
SINCE JUL 1 4323 4391 -68 4327  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 8 0 8 0  
SINCE MAR 1 8 3 5 0  
SINCE JAN 1 8 3 5 5    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (70)  
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SE (120)  
AVERAGE WIND SPEED 8.1  
 
 
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 71 1100 PM  
LOWEST 43 1100 AM  
AVERAGE 57  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 66 87 1977  
MINIMUM TEMPERATURE (F) 41 23 1982  
 
 
SUNRISE AND SUNSET  
APRIL 12 2019.........SUNRISE 638 AM EDT SUNSET 744 PM EDT  
APRIL 13 2019.........SUNRISE 637 AM EDT SUNSET 745 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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