561  
CDUS41 KLWX 200530  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
130 AM EDT SAT APR 20 2024  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 19 2024
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1960 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 57 1:09 AM 91 2002 68 -11 78  
MINIMUM 53 10:09 AM 27 1990 44 9 34  
2001  
AVERAGE 55 56 -1 56  
 
PRECIPITATION (IN)  
YESTERDAY 0.01 1.26 2019 0.11 -0.10 0.00  
MONTH TO DATE 1.44 2.09 -0.65 0.36  
SINCE MAR 1 5.33 5.59 -0.26 1.93  
SINCE JAN 1 12.78 11.14 1.64 5.56  
 
SNOWFALL (IN)  
YESTERDAY 0.0 T 2022 0.0 0.0 0.0  
MONTH TO DATE T 0.1 -0.1 0.0  
SINCE MAR 1 T 4.0 -4.0 T  
SINCE JUL 1 11.7 21.0 -9.3 0.4  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 10 9 1 9  
MONTH TO DATE 144 235 -91 131  
SINCE MAR 1 608 882 -274 701  
SINCE JUL 1 3572 4392 -820 3665  
 
COOLING  
YESTERDAY 0 1 -1 0  
MONTH TO DATE 19 8 11 36  
SINCE MAR 1 19 10 9 37  
SINCE JAN 1 22 10 12 37    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SE (140)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION SE (150)  
AVERAGE WIND SPEED 7.0  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 86 10:00 PM  
LOWEST 74 12:00 AM  
AVERAGE 80  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 69 88 1976  
1985  
MINIMUM TEMPERATURE (F) 45 28 1974  
 
SUNRISE AND SUNSET  
APRIL 20 2024.........SUNRISE 6:25 AM EDT SUNSET 7:52 PM EDT  
APRIL 21 2024.........SUNRISE 6:24 AM EDT SUNSET 7:53 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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