687  
CDUS41 KLWX 042123  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
521 PM EDT THU APR 4 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 4 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 68 355 PM 85 2011 63 5 69  
MINIMUM 37 622 AM 22 2013 39 -2 39  
1965  
AVERAGE 53 51 2 54  
 
PRECIPITATION (IN)  
TODAY 0.00 1.47 1987 0.12 -0.12 0.04  
MONTH TO DATE T 0.49 -0.49 0.15  
SINCE MAR 1 4.55 3.87 0.68 1.94  
SINCE JAN 1 12.01 9.29 2.72 8.33  
 
SNOWFALL (IN)  
TODAY 0.0 0.2 1990 0.0 0.0  
MONTH TO DATE 0.0 0.1 -0.1  
SINCE JUL 1 26.5 21.8 4.7  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 12 15 -3 11  
MONTH TO DATE 82 61 21 58  
SINCE MAR 1 766 708 58 837  
SINCE JUL 1 4271 4298 -27 4188  
 
COOLING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE MAR 1 0 3 -3 0  
SINCE JAN 1 0 3 -3 5    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION N (360)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION N (360)  
AVERAGE WIND SPEED 1.6  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 70 700 AM  
LOWEST 22 100 PM  
AVERAGE 46  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 63 86 2010  
MINIMUM TEMPERATURE (F) 39 22 1965  
 
 
SUNRISE AND SUNSET  
APRIL 4 2019.........SUNRISE 650 AM EDT SUNSET 736 PM EDT  
APRIL 5 2019.........SUNRISE 649 AM EDT SUNSET 737 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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