175  
CDUS41 KLWX 042128  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
528 PM EDT SAT MAY 04 2024  
   
...............................  
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 4 2024  
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
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)  
TODAY  
MAXIMUM 56 2:34 PM 90 2001 72 -16 64  
2018  
MINIMUM 52 5:43 AM 31 1967 49 3 44  
AVERAGE 54 61 -7 54  
 
PRECIPITATION (IN)  
TODAY 0.80 1.23 1996 0.15 0.65 0.05  
MONTH TO DATE 1.21 0.57 0.64 0.09  
SINCE MAR 1 6.84 7.54 -0.70 4.96  
SINCE JAN 1 14.29 13.09 1.20 8.59  
 
SNOWFALL (IN)  
TODAY 0.0 MM MM 0.0 0.0 MM  
MONTH TO DATE 0.0 0.0 0.0 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  
TODAY 11 6 5 11  
MONTH TO DATE 11 24 -13 50  
SINCE MAR 1 690 991 -301 833  
SINCE JUL 1 3654 4501 -847 3797  
 
COOLING  
TODAY 0 1 -1 0  
MONTH TO DATE 16 4 12 0  
SINCE MAR 1 60 26 34 45  
SINCE JAN 1 63 26 37 45    
...............................................................  
 
WIND (MPH)  
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (110)  
HIGHEST GUST SPEED 15 HIGHEST GUST DIRECTION E (110)  
AVERAGE WIND SPEED 5.9  
 
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 12:00 PM  
LOWEST 83 12:00 AM  
AVERAGE 88  
   
......................................................  
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 73 88 1980  
MINIMUM TEMPERATURE (F) 50 29 1976  
 
SUNRISE AND SUNSET  
MAY 4 2024...........SUNRISE 6:08 AM EDT SUNSET 8:06 PM EDT  
MAY 5 2024...........SUNRISE 6:07 AM EDT SUNSET 8:07 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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