775  
CDUS41 KLWX 052127  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
527 PM EDT FRI OCT 5 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 5 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 76 1204 AM 90 2013 72 4 85  
1967  
MINIMUM 66 647 AM 32 1970 48 18 51  
AVERAGE 71 60 11 68  
 
PRECIPITATION (IN)  
TODAY 0.00 2.04 1971 0.10 -0.10 0.00  
MONTH TO DATE 0.00 0.52 -0.52 0.00  
SINCE SEP 1 7.36 4.44 2.92 1.75  
SINCE JAN 1 50.62 32.44 18.18 34.75  
 
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 6 -6 0  
MONTH TO DATE 0 29 -29 25  
SINCE SEP 1 13 85 -72 65  
SINCE JUL 1 13 87 -74 66  
 
COOLING  
TODAY 6 1 5 3  
MONTH TO DATE 46 7 39 3  
SINCE SEP 1 287 148 139 158  
SINCE JAN 1 1471 1164 307 1219    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION N (10)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION N (360)  
AVERAGE WIND SPEED 8.1  
 
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.9  
 
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 100 AM  
LOWEST 64 300 PM  
AVERAGE 79  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 89 2013  
MINIMUM TEMPERATURE (F) 47 28 1968  
 
 
SUNRISE AND SUNSET  
OCTOBER 5 2018.......SUNRISE 709 AM EDT SUNSET 646 PM EDT  
OCTOBER 6 2018.......SUNRISE 710 AM EDT SUNSET 645 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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