801  
CDUS41 KLWX 190815  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
415 AM EDT FRI APR 19 2024  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 18 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 79 3:07 PM 90 1976 68 11 73  
MINIMUM 53 5:59 AM 29 2018 44 9 42  
AVERAGE 66 56 10 58  
 
PRECIPITATION (IN)  
YESTERDAY T 0.59 1978 0.11 -0.11 0.00  
MONTH TO DATE 1.43 1.98 -0.55 0.36  
SINCE MAR 1 5.32 5.48 -0.16 1.93  
SINCE JAN 1 12.77 11.03 1.74 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 0 10 -10 7  
MONTH TO DATE 134 226 -92 122  
SINCE MAR 1 598 873 -275 692  
SINCE JUL 1 3562 4383 -821 3656  
 
COOLING  
YESTERDAY 1 1 0 0  
MONTH TO DATE 19 7 12 36  
SINCE MAR 1 19 9 10 37  
SINCE JAN 1 22 9 13 37    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NW (330)  
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION N (340)  
AVERAGE WIND SPEED 7.6  
 
SKY COVER  
AVERAGE SKY COVER 0.5  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 90 4:00 AM  
LOWEST 36 2:00 PM  
AVERAGE 63  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 68 91 2002  
MINIMUM TEMPERATURE (F) 44 27 1990  
2001  
 
SUNRISE AND SUNSET  
APRIL 19 2024.........SUNRISE 6:27 AM EDT SUNSET 7:51 PM EDT  
APRIL 20 2024.........SUNRISE 6:25 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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