738  
CDUS41 KLWX 142137  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
537 PM EDT SAT AUG 14 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 14 2021
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1960 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 92 3:47 PM 100 1985 87 5 88  
MINIMUM 70 3:49 AM 49 1983 66 4 73  
AVERAGE 81 76 5 81  
 
PRECIPITATION (IN)  
TODAY T 1.12 2008 0.11 -0.11 T  
MONTH TO DATE 0.74 1.63 -0.89 4.11  
SINCE JUN 1 6.82 10.08 -3.26 14.17  
SINCE JAN 1 20.40 27.32 -6.92 30.69  
 
SNOWFALL (IN)  
TODAY 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 0.0  
SINCE JUL 1 0.0 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 6 13 -7 5  
SINCE JUL 1 0 0 0 0  
 
COOLING  
TODAY 16 11 5 16  
MONTH TO DATE 175 164 11 209  
SINCE JUN 1 889 780 109 983  
SINCE JAN 1 998 886 112 1060    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION NW (310)  
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION N (340)  
AVERAGE WIND SPEED 4.3  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 94 12:00 AM  
LOWEST 49 1:00 PM  
AVERAGE 72  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 102 1988  
MINIMUM TEMPERATURE (F) 66 45 1964  
 
SUNRISE AND SUNSET  
AUGUST 14 2021........SUNRISE 6:23 AM EDT SUNSET 8:05 PM EDT  
AUGUST 15 2021........SUNRISE 6:24 AM EDT SUNSET 8:04 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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