587  
CDUS41 KLWX 290524  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
124 AM EDT MON APR 29 2024  
   
...............................  
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 28 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 86 4:16 PM 88 1983 71 15 58  
1990  
2021  
MINIMUM 53 5:07 AM 32 1972 48 5 52  
1993  
AVERAGE 70 59 11 55  
 
PRECIPITATION (IN)  
YESTERDAY T 1.68 2002 0.13 -0.13 1.41  
MONTH TO DATE 1.60 3.21 -1.61 2.24  
SINCE MAR 1 5.49 6.71 -1.22 3.81  
SINCE JAN 1 12.94 12.26 0.68 7.44  
 
SNOWFALL (IN)  
YESTERDAY 0.0 0.0 2001 0.0 0.0 0.0  
2002  
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 0 7 -7 10  
MONTH TO DATE 215 307 -92 201  
SINCE MAR 1 679 954 -275 771  
SINCE JUL 1 3643 4464 -821 3735  
 
COOLING  
YESTERDAY 5 1 4 0  
MONTH TO DATE 25 17 8 44  
SINCE MAR 1 25 19 6 45  
SINCE JAN 1 28 19 9 45    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION S (180)  
AVERAGE WIND SPEED 4.9  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
FOG  
FOG W/VISIBILITY <= 1/4 MILE  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 5:00 AM  
LOWEST 40 5:00 PM  
AVERAGE 69  
   
......................................................  
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 89 2017  
MINIMUM TEMPERATURE (F) 48 32 1987  
 
SUNRISE AND SUNSET  
APRIL 29 2024.........SUNRISE 6:14 AM EDT SUNSET 8:01 PM EDT  
APRIL 30 2024.........SUNRISE 6:12 AM EDT SUNSET 8:02 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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