259  
CDUS41 KLWX 032122  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
522 PM EDT TUE AUG 03 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR AUGUST 3 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 80 3:59 PM 99 1991 87 -7 86  
2006  
MINIMUM 59 1:29 AM 50 1976 67 -8 71  
1985  
1998  
AVERAGE 70 77 -7 79  
 
PRECIPITATION (IN)  
TODAY 0.00 1.03 1970 0.13 -0.13 0.34  
MONTH TO DATE 0.65 0.36 0.29 0.34  
SINCE JUN 1 6.73 8.81 -2.08 10.40  
SINCE JAN 1 20.31 26.05 -5.74 26.92  
 
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 5 12 -7 14  
MONTH TO DATE 17 36 -19 47  
SINCE JUN 1 731 652 79 821  
SINCE JAN 1 840 758 82 898    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 9 HIGHEST WIND DIRECTION NE (60)  
HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION SE (140)  
AVERAGE WIND SPEED 3.1  
 
SKY COVER  
AVERAGE SKY COVER 0.7  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 4:00 AM  
LOWEST 49 3:00 PM  
AVERAGE 70  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 87 99 2002  
MINIMUM TEMPERATURE (F) 67 51 1976  
 
SUNRISE AND SUNSET  
AUGUST 3 2021........SUNRISE 6:13 AM EDT SUNSET 8:19 PM EDT  
AUGUST 4 2021........SUNRISE 6:14 AM EDT SUNSET 8:18 PM EDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab VA Page
The Nexlab MD Page
The Nexlab WV Page Main Text Page