652  
CDUS41 KLWX 262123  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
523 PM EDT WED MAY 26 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 26 2021
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1960 TO 2021  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 92R 3:51 PM 92 2007 77 15 81  
MINIMUM 69 4:52 AM 38 1967 56 13 55  
AVERAGE 81 67 14 68  
 
PRECIPITATION (IN)  
TODAY T 3.59 2009 0.15 -0.15 0.00  
MONTH TO DATE 1.56 3.95 -2.39 2.25  
SINCE MAR 1 6.11 10.92 -4.81 9.80  
SINCE JAN 1 12.27 16.47 -4.20 16.37  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE MAR 1 T 4.0 -4.0 T  
SINCE JUL 1 12.0 21.0 -9.0 2.9  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
TODAY 0 2 -2 0  
MONTH TO DATE 117 106 11 175  
SINCE MAR 1 932 1073 -141 1005  
SINCE JUL 1 4125 4583 -458 4149  
 
COOLING  
TODAY 16 4 12 3  
MONTH TO DATE 72 63 9 35  
SINCE MAR 1 98 85 13 38  
SINCE JAN 1 98 85 13 38    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (190)  
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 5.9  
 
SKY COVER  
AVERAGE SKY COVER 0.6  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
THUNDERSTORM  
LIGHT RAIN  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 4:00 AM  
LOWEST 43 3:00 PM  
AVERAGE 68  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 78 92 1965  
2010  
MINIMUM TEMPERATURE (F) 56 37 1972  
 
SUNRISE AND SUNSET  
MAY 26 2021...........SUNRISE 5:49 AM EDT SUNSET 8:25 PM EDT  
MAY 27 2021...........SUNRISE 5:48 AM EDT SUNSET 8:26 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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