891  
CDUS41 KLWX 020529  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
129 AM EDT THU MAY 2 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 1 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 67 1223 AM 90 2010 71 -4 82  
MINIMUM 58 1159 PM 33 1996 47 11 39  
AVERAGE 63 59 4 61  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.42 1981 0.13 -0.13 0.00  
MONTH TO DATE 0.00 0.13 -0.13 0.00  
SINCE MAR 1 7.37 6.98 0.39 5.34  
SINCE JAN 1 14.83 12.40 2.43 11.73  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 1963 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 2 7 -5 4  
MONTH TO DATE 2 7 -5 4  
SINCE MAR 1 884 989 -105 1193  
SINCE JUL 1 4389 4579 -190 4544  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 0 1 -1 0  
SINCE MAR 1 22 21 1 15  
SINCE JAN 1 22 21 1 20    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION E (100)  
AVERAGE WIND SPEED 7.6  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 1.0  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 1000 PM  
LOWEST 68 1200 AM  
AVERAGE 79  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 88 2018  
2010  
1992  
MINIMUM TEMPERATURE (F) 47 34 1979  
1960  
 
 
SUNRISE AND SUNSET  
MAY 2 2019...........SUNRISE 611 AM EDT SUNSET 803 PM EDT  
MAY 3 2019...........SUNRISE 610 AM EDT SUNSET 804 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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