049  
CDUS41 KLWX 242126  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
526 PM EDT MON MAY 24 2021  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 24 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 79 1:41 AM 90 1964 77 2 69  
MINIMUM 59 3:59 PM 36 1963 55 4 60  
AVERAGE 69 66 3 65  
 
PRECIPITATION (IN)  
TODAY 0.49 0.83 1994 0.16 0.33 T  
2005  
MONTH TO DATE 1.52 3.64 -2.12 2.25  
SINCE MAR 1 6.07 10.61 -4.54 9.80  
SINCE JAN 1 12.23 16.16 -3.93 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 3 -3 0  
MONTH TO DATE 117 102 15 175  
SINCE MAR 1 932 1069 -137 1005  
SINCE JUL 1 4125 4579 -454 4149  
 
COOLING  
TODAY 4 4 0 0  
MONTH TO DATE 52 55 -3 28  
SINCE MAR 1 78 77 1 31  
SINCE JAN 1 78 77 1 31    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION E (90)  
AVERAGE WIND SPEED 8.0  
 
SKY COVER  
AVERAGE SKY COVER 0.9  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
HEAVY RAIN  
RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 2:00 PM  
LOWEST 62 1:00 AM  
AVERAGE 78  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 77 92 1991  
MINIMUM TEMPERATURE (F) 56 36 1967  
 
SUNRISE AND SUNSET  
MAY 24 2021...........SUNRISE 5:50 AM EDT SUNSET 8:24 PM EDT  
MAY 25 2021...........SUNRISE 5:50 AM EDT SUNSET 8:24 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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