844  
CDUS41 KLWX 262128  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
528 PM EDT FRI MAY 26 2017  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 26 2017
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1962 TO 2017  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 76 258 PM 92 2007 78 -2 89  
MINIMUM 53 129 AM 38 1967 54 -1 56  
AVERAGE 65 66 -1 73  
 
PRECIPITATION (IN)  
TODAY 0.00 3.59 2009 0.14 -0.14 0.00  
MONTH TO DATE 6.61 3.79 2.82 6.07  
SINCE MAR 1 13.77 10.64 3.13 9.40  
SINCE JAN 1 17.21 16.06 1.15 17.66  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0  
SINCE JUL 1 7.3 22.0 -14.7  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 3 -3 0  
MONTH TO DATE 139 121 18 164  
SINCE MAR 1 958 1103 -145 945  
SINCE JUL 1 3851 4693 -842 4036  
 
COOLING  
TODAY 0 4 -4 8  
MONTH TO DATE 50 52 -2 18  
SINCE MAR 1 119 72 47 41  
SINCE JAN 1 119 72 47 41    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION W (290)  
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION W (280)  
AVERAGE WIND SPEED 10.0  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
FOG  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 100 100 AM  
LOWEST 43 400 PM  
AVERAGE 72  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 92 2010  
1965  
MINIMUM TEMPERATURE (F) 55 37 1972  
 
 
SUNRISE AND SUNSET  
MAY 26 2017...........SUNRISE 549 AM EDT SUNSET 825 PM EDT  
MAY 27 2017...........SUNRISE 548 AM EDT SUNSET 826 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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