276  
CDUS41 KLWX 252124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
523 PM EDT SAT MAY 25 2019  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 25 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 81 332 PM 92 1991 77 4 86  
MINIMUM 61 204 AM 36 1967 54 7 56  
AVERAGE 71 66 5 71  
 
PRECIPITATION (IN)  
TODAY 0.00 1.76 1997 0.16 -0.16 0.00  
MONTH TO DATE 4.31 3.65 0.66 6.50  
SINCE MAR 1 11.68 10.50 1.18 11.84  
SINCE JAN 1 19.14 15.92 3.22 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 60 118 -58 21  
SINCE MAR 1 942 1100 -158 1210  
SINCE JUL 1 4447 4690 -243 4561  
 
COOLING  
TODAY 6 3 3 6  
MONTH TO DATE 89 48 41 113  
SINCE MAR 1 111 68 43 128  
SINCE JAN 1 111 68 43 133    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SE (150)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION SE (140)  
AVERAGE WIND SPEED 6.8  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.6  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 78 100 AM  
LOWEST 54 1200 PM  
AVERAGE 66  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 92 2007  
MINIMUM TEMPERATURE (F) 54 38 1967  
 
 
SUNRISE AND SUNSET  
MAY 25 2019...........SUNRISE 550 AM EDT SUNSET 824 PM EDT  
MAY 26 2019...........SUNRISE 549 AM EDT SUNSET 825 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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