133  
CDUS41 KLWX 310625  
CLIIAD  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  
225 AM EDT FRI OCT 31 2025  
   
...............................
 
 
   
..THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR OCTOBER 30 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1960 TO 2025  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
YESTERDAY  
MAXIMUM 66 2:46 PM 84 2016 63 3 81  
MINIMUM 48 10:00 PM 20 1969 40 8 44  
AVERAGE 57 51 6 63  
 
PRECIPITATION (IN)  
YESTERDAY 0.58 1.00 2012 0.11 0.47 0.00  
MONTH TO DATE 2.13 3.54 -1.41 0.13  
SINCE SEP 1 3.35 7.48 -4.13 3.40  
SINCE JAN 1 27.99 36.70 -8.71 29.18  
 
SNOWFALL (IN)  
YESTERDAY MM MM MM 0.0 MM 0.0  
MONTH TO DATE 0.0 0.0 0.0 0.0  
SINCE SEP 1 0.0 0.0 0.0 0.0  
SINCE JUL 1 0.0 0.0 0.0 0.0  
SNOW DEPTH MM  
 
DEGREE DAYS  
HEATING  
YESTERDAY 8 14 -6 2  
MONTH TO DATE 241 269 -28 224  
SINCE SEP 1 248 314 -66 236  
SINCE JUL 1 250 315 -65 238  
 
COOLING  
YESTERDAY 0 0 0 0  
MONTH TO DATE 12 19 -7 14  
SINCE SEP 1 182 171 11 151  
SINCE JAN 1 1330 1227 103 1565    
...............................................................
 
 
WIND (MPH)  
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION SW (230)  
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION SW (240)  
AVERAGE WIND SPEED 8.3  
 
SKY COVER  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.  
THUNDERSTORM  
HEAVY RAIN  
LIGHT RAIN  
FOG  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 97 6:00 AM  
LOWEST 56 3:00 PM  
AVERAGE 77  
   
......................................................
 
 
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 62 83 2024  
MINIMUM TEMPERATURE (F) 40 21 1968  
 
SUNRISE AND SUNSET  
OCTOBER 31 2025.......SUNRISE 7:36 AM EDT SUNSET 6:10 PM EDT  
NOVEMBER 1 2025......SUNRISE 7:37 AM EDT SUNSET 6:09 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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