032  
CDUS41 KLWX 292124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
523 PM EDT SUN JUL 29 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 29 2018
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1960 TO 2018  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
..............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 85 245 PM 103 2011 88 -3 77  
MINIMUM 65 514 AM 52 2014 66 -1 63  
AVERAGE 75 77 -2 70  
 
PRECIPITATION (IN)  
TODAY 0.00 0.92 2001 0.12 -0.12 0.16  
MONTH TO DATE 9.75 3.42 6.33 8.80  
SINCE JUN 1 13.92 7.40 6.52 10.08  
SINCE JAN 1 34.57 24.22 10.35 29.17  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 5 15 -10 6  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 10 12 -2 5  
MONTH TO DATE 350 343 7 390  
SINCE JUN 1 591 580 11 646  
SINCE JAN 1 783 672 111 783    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION NW (320)  
AVERAGE WIND SPEED 4.2  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.7  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 100 AM  
LOWEST 43 100 PM  
AVERAGE 68  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 98 1988  
MINIMUM TEMPERATURE (F) 66 48 2014  
 
 
SUNRISE AND SUNSET  
JULY 29 2018..........SUNRISE 608 AM EDT SUNSET 824 PM EDT  
JULY 30 2018..........SUNRISE 609 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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