012  
CDUS41 KLWX 232127  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
527 PM EDT THU MAY 23 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 23 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 88 139 PM 92 1964 77 11 80  
MINIMUM 59 532 AM 39 2002 53 6 58  
1990  
1971  
AVERAGE 74 65 9 69  
 
PRECIPITATION (IN)  
TODAY 0.27 2.40 2010 0.16 0.11 0.00  
MONTH TO DATE 4.31 3.34 0.97 6.50  
SINCE MAR 1 11.68 10.19 1.49 11.84  
SINCE JAN 1 19.14 15.61 3.53 18.23  
 
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 3 -3 0  
MONTH TO DATE 60 112 -52 21  
SINCE MAR 1 942 1094 -152 1210  
SINCE JUL 1 4447 4684 -237 4561  
 
COOLING  
TODAY 9 3 6 4  
MONTH TO DATE 75 42 33 102  
SINCE MAR 1 97 62 35 117  
SINCE JAN 1 97 62 35 122    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 35 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 8.5  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
THUNDERSTORM  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
HAZE  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 84 300 PM  
LOWEST 55 100 PM  
AVERAGE 70  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 90 1964  
MINIMUM TEMPERATURE (F) 54 36 1963  
 
 
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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