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Washington Dulles International Airport weather averages
Washington Dulles International Airport weather averages include temperature, rainfall & sunshine figures for every month of the year. Check the weather at Washington Dulles International Airport (IAD), D.C., USA before you book your next flight.
Max temperature (°C) at Washington Dulles International Airport
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Monthly rainfall (mm) at Washington Dulles International Airport
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Hours of sunshine at Washington Dulles International Airport
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Metric (°C / mm) | Imperial (°F / inches)
The D.C. weather averages are provided by Weather2Travel.com. For more weather guides on D.C., USA visit the D.C. weather averages section.