063  
CDUS41 KLWX 042123  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
523 PM EDT SAT MAY 4 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 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 75 250 PM 90 2018 72 3 90  
2001  
MINIMUM 61 345 AM 31 1967 47 14 64  
AVERAGE 68 60 8 77  
 
PRECIPITATION (IN)  
TODAY 0.00 1.23 1996 0.13 -0.13 0.01  
MONTH TO DATE 0.71 0.52 0.19 0.01  
SINCE MAR 1 8.08 7.37 0.71 5.35  
SINCE JAN 1 15.54 12.79 2.75 11.74  
 
SNOWFALL (IN)  
TODAY 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  
TODAY 0 6 -6 0  
MONTH TO DATE 2 27 -25 4  
SINCE MAR 1 884 1009 -125 1193  
SINCE JUL 1 4389 4599 -210 4544  
 
COOLING  
TODAY 3 1 2 12  
MONTH TO DATE 15 4 11 26  
SINCE MAR 1 37 24 13 41  
SINCE JAN 1 37 24 13 46    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION N (350)  
HIGHEST GUST SPEED 11 HIGHEST GUST DIRECTION NE (30)  
AVERAGE WIND SPEED 4.1  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
HAZE  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 100 AM  
LOWEST 64 200 PM  
AVERAGE 82  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 88 1980  
MINIMUM TEMPERATURE (F) 48 29 1976  
 
 
SUNRISE AND SUNSET  
MAY 4 2019...........SUNRISE 609 AM EDT SUNSET 805 PM EDT  
MAY 5 2019...........SUNRISE 607 AM EDT SUNSET 806 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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