In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.
If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Turkish Airlines | Cheapest$547 | Average$695 | FlexibilityNo cancel fee | On-time77% |
Lufthansa | Cheapest$557 | Average$672 | FlexibilityNo cancel fee | On-time76% |
Austrian Airlines | Cheapest$606 | Average$647 | FlexibilityNo cancel fee | On-time78% |