383  
CDUS41 KLWX 250523  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
122 AM EDT SAT MAY 25 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 24 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 84 428 PM 90 1964 77 7 84  
MINIMUM 61 1142 PM 36 1963 54 7 56  
AVERAGE 73 65 8 70  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 0.83 2005 0.15 -0.15 0.00  
1994  
MONTH TO DATE 4.31 3.49 0.82 6.50  
SINCE MAR 1 11.68 10.34 1.34 11.84  
SINCE JAN 1 19.14 15.76 3.38 18.23  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0  
SINCE JUL 1 26.5 22.0 4.5  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 3 -3 0  
MONTH TO DATE 60 115 -55 21  
SINCE MAR 1 942 1097 -155 1210  
SINCE JUL 1 4447 4687 -240 4561  
 
COOLING  
YESTERDAY 8 3 5 5  
MONTH TO DATE 83 45 38 107  
SINCE MAR 1 105 65 40 122  
SINCE JAN 1 105 65 40 127    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NW (320)  
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION NW (310)  
AVERAGE WIND SPEED 9.0  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.3  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 1200 AM  
LOWEST 32 400 PM  
AVERAGE 65  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 92 1991  
MINIMUM TEMPERATURE (F) 54 36 1967  
 
 
SUNRISE AND SUNSET  
MAY 25 2019...........SUNRISE 550 AM EDT SUNSET 824 PM EDT  
MAY 26 2019...........SUNRISE 549 AM EDT SUNSET 825 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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