565  
CDUS41 KLWX 222130  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
529 PM EDT MON APR 22 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 22 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 72 353 PM 92 1985 69 3 68  
MINIMUM 51 603 AM 27 1975 44 7 44  
AVERAGE 62 56 6 56  
 
PRECIPITATION (IN)  
TODAY 0.00 2.88 2006 0.12 -0.12 0.00  
MONTH TO DATE 2.24 2.54 -0.30 1.63  
SINCE MAR 1 6.79 5.92 0.87 3.42  
SINCE JAN 1 14.25 11.34 2.91 9.81  
 
SNOWFALL (IN)  
TODAY 0.0 T 1993 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 3 9 -6 9  
MONTH TO DATE 169 272 -103 334  
SINCE MAR 1 853 919 -66 1113  
SINCE JUL 1 4358 4509 -151 4464  
 
COOLING  
TODAY 0 1 -1 0  
MONTH TO DATE 18 10 8 15  
SINCE MAR 1 18 13 5 15  
SINCE JAN 1 18 13 5 20    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 11.5  
 
 
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 68 400 AM  
LOWEST 38 400 PM  
AVERAGE 53  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 88 2001  
MINIMUM TEMPERATURE (F) 44 30 1989  
 
 
SUNRISE AND SUNSET  
APRIL 22 2019.........SUNRISE 624 AM EDT SUNSET 754 PM EDT  
APRIL 23 2019.........SUNRISE 622 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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