700  
CDUS41 KLWX 230521  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
1221 AM EST MON NOV 23 2020  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR NOVEMBER 22 2020
 
 
CLIMATE NORMAL PERIOD: 1981 TO 2010  
CLIMATE RECORD PERIOD: 1960 TO 2020  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 58 1:54 PM 75 2007 55 3 54  
MINIMUM 51 9:14 AM 14 1964 34 17 33  
2014  
AVERAGE 55 44 11 44  
 
PRECIPITATION (IN)  
YESTERDAY 0.00 1.54 1991 0.11 -0.11 0.16  
MONTH TO DATE 2.03 2.49 -0.46 0.58  
SINCE SEP 1 7.85 9.66 -1.81 6.96  
SINCE JAN 1 42.07 37.66 4.41 36.80  
 
SNOWFALL (IN)  
YESTERDAY 0.0 2.2 1989 0.0 0.0 0.0  
MONTH TO DATE 0.0 0.2 -0.2 T  
SINCE SEP 1 0.0 0.2 -0.2 T  
SINCE JUL 1 0.0 0.2 -0.2 T  
SNOW DEPTH 0  
 
DEGREE DAYS  
HEATING  
YESTERDAY 10 21 -11 21  
MONTH TO DATE 273 379 -106 502  
SINCE SEP 1 540 733 -193 687  
SINCE JUL 1 540 735 -195 687  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 1 0 1 0  
SINCE SEP 1 154 160 -6 289  
SINCE JAN 1 1406 1176 230 1524    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (100)  
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION E (90)  
AVERAGE WIND SPEED 5.9  
 
SKY COVER  
AVERAGE SKY COVER 1.0  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 87 10:00 PM  
LOWEST 57 1:00 AM  
AVERAGE 72  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 54 70 1990  
MINIMUM TEMPERATURE (F) 33 14 1964  
1984  
 
SUNRISE AND SUNSET  
NOVEMBER 23 2020......SUNRISE 7:02 AM EST SUNSET 4:51 PM EST  
NOVEMBER 24 2020......SUNRISE 7:03 AM EST SUNSET 4:50 PM EST  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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