217  
CDUS41 KLWX 192122  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
522 PM EDT MON APR 19 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 19 2021
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
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 64 3:33 PM 91 2002 68 -4 65  
MINIMUM 47 5:32 AM 27 1990 43 4 30  
2001  
AVERAGE 56 56 0 48  
 
PRECIPITATION (IN)  
TODAY T 1.26 2019 0.11 -0.11 0.00  
MONTH TO DATE 1.51 2.20 -0.69 2.85  
SINCE MAR 1 3.78 5.58 -1.80 4.84  
SINCE JAN 1 9.94 11.00 -1.06 11.41  
 
SNOWFALL (IN)  
TODAY 0.0 0.0 2001 0.0 0.0 0.0  
2002  
MONTH TO DATE T 0.3 -0.3 T  
SINCE MAR 1 T 3.1 -3.1 T  
SINCE JUL 1 12.0 22.0 -10.0 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 9 10 -1 17  
MONTH TO DATE 204 243 -39 249  
SINCE MAR 1 719 890 -171 697  
SINCE JUL 1 3912 4480 -568 3841  
 
COOLING  
TODAY 0 1 -1 0  
MONTH TO DATE 5 7 -2 0  
SINCE MAR 1 9 10 -1 3  
SINCE JAN 1 9 10 -1 3    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION S (160)  
AVERAGE WIND SPEED 4.4  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 7:00 AM  
LOWEST 46 2:00 PM  
AVERAGE 66  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 68 88 1976  
1985  
MINIMUM TEMPERATURE (F) 43 28 1974  
 
SUNRISE AND SUNSET  
APRIL 19 2021.........SUNRISE 6:27 AM EDT SUNSET 7:51 PM EDT  
APRIL 20 2021.........SUNRISE 6:26 AM EDT SUNSET 7:52 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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