627  
CDUS41 KLWX 070534  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
134 AM EDT TUE JUL 07 2020  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JULY 6 2020
 
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1960 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 95 3:58 PM 102 1977 88 7 95  
MINIMUM 71 11:59 PM 45 1979 65 6 71  
AVERAGE 83 76 7 83  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 1.68 2017 0.12 -0.11 T  
MONTH TO DATE 0.68 0.73 -0.05 0.23  
SINCE JUN 1 5.89 4.71 1.18 2.67  
SINCE JAN 1 22.41 21.53 0.88 22.55  
 
SNOWFALL (IN)  
YESTERDAY 0.0 MM MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE JUN 1 0.0 0.0 0.0 T  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 0 0 0 0  
SINCE JUN 1 5 15 -10 9  
SINCE JUL 1 0 0 0 0  
 
COOLING  
YESTERDAY 18 12 6 18  
MONTH TO DATE 93 67 26 87  
SINCE JUN 1 366 304 62 343  
SINCE JAN 1 443 396 47 522    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION E (90)  
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION E (100)  
AVERAGE WIND SPEED 5.1  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 94 12:00 AM  
LOWEST 44 3:00 PM  
AVERAGE 69  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 88 101 1988  
2010  
2012  
MINIMUM TEMPERATURE (F) 65 47 1970  
 
SUNRISE AND SUNSET  
JULY 7 2020..........SUNRISE 5:52 AM EDT SUNSET 8:38 PM EDT  
JULY 8 2020..........SUNRISE 5:52 AM EDT SUNSET 8:37 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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