839  
CDUS41 KLWX 272123  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
523 PM EDT THU APR 27 2023  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR APRIL 27 2023
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1960 TO 2023  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 72 2:57 PM 92 1990 71 1 62  
2009  
MINIMUM 46 5:50 AM 31 1972 47 -1 43  
1987  
AVERAGE 59 59 0 53  
 
PRECIPITATION (IN)  
TODAY 0.00 1.65 1973 0.13 -0.13 0.00  
MONTH TO DATE 0.83 3.08 -2.25 2.25  
SINCE MAR 1 2.40 6.58 -4.18 4.17  
SINCE JAN 1 6.03 12.13 -6.10 10.37  
 
SNOWFALL (IN)  
TODAY 0.0 T 1994 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.1 -0.1 T  
SINCE MAR 1 T 4.0 -4.0 3.5  
SINCE JUL 1 0.4 21.0 -20.6 15.8  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 6 7 -1 12  
MONTH TO DATE 191 300 -109 300  
SINCE MAR 1 761 947 -186 823  
SINCE JUL 1 3715 4457 -742 3897  
 
COOLING  
TODAY 0 1 -1 0  
MONTH TO DATE 44 16 28 11  
SINCE MAR 1 45 18 27 14  
SINCE JAN 1 45 18 27 14    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION NE (40)  
AVERAGE WIND SPEED 3.9  
 
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 6:00 AM  
LOWEST 46 4:00 PM  
AVERAGE 68  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 71 88 1983  
1990  
2021  
MINIMUM TEMPERATURE (F) 48 32 1972  
1993  
 
SUNRISE AND SUNSET  
APRIL 27 2023.........SUNRISE 6:17 AM EDT SUNSET 7:58 PM EDT  
APRIL 28 2023.........SUNRISE 6:16 AM EDT SUNSET 7:59 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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