165  
CDUS41 KLWX 042122  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
522 PM EDT MON JUN 4 2018  
 
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JUNE 4 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 79 344 PM 90 1973 81 -2 86  
MINIMUM 56 340 AM 40 1977 58 -2 55  
1976  
AVERAGE 68 69 -1 71  
 
PRECIPITATION (IN)  
TODAY 0.00 1.63 2008 0.13 -0.13 0.00  
MONTH TO DATE 2.07 0.56 1.51 0.00  
SINCE JUN 1 2.07 0.56 1.51 0.00  
SINCE JAN 1 22.72 17.38 5.34 19.09  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0  
SINCE JUL 1 11.9 22.0 -10.1  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 1 -1 0  
MONTH TO DATE 1 6 -5 0  
SINCE JUN 1 1 6 -5 0  
SINCE JUL 1 4562 4708 -146 3852  
 
COOLING  
TODAY 3 5 -2 6  
MONTH TO DATE 28 20 8 15  
SINCE JUN 1 28 20 8 15  
SINCE JAN 1 220 112 108 152    
..............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION NW (330)  
AVERAGE WIND SPEED 7.2  
 
 
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 100 200 AM  
LOWEST 47 400 PM  
AVERAGE 74  
   
......................................................
 
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 81 90 2002  
MINIMUM TEMPERATURE (F) 58 40 1976  
 
 
SUNRISE AND SUNSET  
JUNE 4 2018..........SUNRISE 545 AM EDT SUNSET 831 PM EDT  
JUNE 5 2018..........SUNRISE 545 AM EDT SUNSET 832 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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