966  
CDUS41 KLWX 230528  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
128 AM EDT THU MAY 23 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 22 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 71 449 PM 88 2004 77 -6 80  
1984  
1975  
MINIMUM 48 416 AM 31 2002 53 -5 65  
AVERAGE 60 65 -5 73  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 2.07 2001 0.15 -0.15 0.83  
MONTH TO DATE 4.04 3.18 0.86 6.50  
SINCE MAR 1 11.41 10.03 1.38 11.84  
SINCE JAN 1 18.87 15.45 3.42 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 5 3 2 0  
MONTH TO DATE 60 109 -49 21  
SINCE MAR 1 942 1091 -149 1210  
SINCE JUL 1 4447 4681 -234 4561  
 
COOLING  
YESTERDAY 0 3 -3 8  
MONTH TO DATE 66 39 27 98  
SINCE MAR 1 88 59 29 113  
SINCE JAN 1 88 59 29 118    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED 16 HIGHEST GUST DIRECTION SE (140)  
AVERAGE WIND SPEED 5.5  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 400 AM  
LOWEST 37 1100 AM  
AVERAGE 62  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 92 1964  
MINIMUM TEMPERATURE (F) 53 39 2002  
1990  
1971  
 
 
SUNRISE AND SUNSET  
MAY 23 2019...........SUNRISE 551 AM EDT SUNSET 822 PM EDT  
MAY 24 2019...........SUNRISE 550 AM EDT SUNSET 823 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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