465  
CDUS41 KLWX 012124  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
524 PM EDT FRI MAY 01 2026  
   
...............................  
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 1 2026  
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1960 TO 2026  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................  
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 68 3:55 PM 90 2010 72 -4 83  
MINIMUM 38 4:15 AM 33 1996 48 -10 55  
AVERAGE 53 60 -7 69  
 
PRECIPITATION (IN)  
TODAY 0.00 1.42 1981 0.14 -0.14 0.00  
MONTH TO DATE 0.00 0.14 -0.14 0.00  
SINCE MAR 1 4.52 7.11 -2.59 3.43  
SINCE JAN 1 10.32 12.66 -2.34 7.85  
 
SNOWFALL (IN)  
TODAY 0.0 T 1963 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE MAR 1 1.0 4.0 -3.0 0.0  
SINCE JUL 1 13.6 21.0 -7.4 15.5  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
TODAY 12 6 6 0  
MONTH TO DATE 12 6 6 0  
SINCE MAR 1 662 973 -311 691  
SINCE JUL 1 4291 4483 -192 4013  
 
COOLING  
TODAY 0 1 -1 4  
MONTH TO DATE 0 1 -1 4  
SINCE MAR 1 86 23 63 51  
SINCE JAN 1 86 23 63 51    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION SW (210)  
AVERAGE WIND SPEED 4.2  
 
SKY COVER  
AVERAGE SKY COVER 0.3  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 82 12:00 AM  
LOWEST 29 3:00 PM  
AVERAGE 56  
   
......................................................  
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 72 91 2024  
MINIMUM TEMPERATURE (F) 49 34 1960  
1979  
 
SUNRISE AND SUNSET  
MAY 1 2026...........SUNRISE 6:12 AM EDT SUNSET 8:03 PM EDT  
MAY 2 2026...........SUNRISE 6:11 AM EDT SUNSET 8:04 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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