Typical Weather in Washington DC, MD in September
80° F Avg High
63° F Avg Low
5 Rainy Days
☀️ Temperature Summary
September is a popular time of year to visit, with an inviting climate characterized by warm temperatures. September is one of the warmer months of the year for Washington DC, with highs averaging around 80°F. You can expect overnight lows near 63°F most days. Temperatures will usually fall as the month goes on, with daily high temperatures ranging between 84°F and 75°F.
September is a great time to visit Washington DC, with mild temperatures and sunny days being very common.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
In September you can expect close to a 18% chance of rain for any given day. It rains less than usual in September, with total rainfall for the month typically near 4 inches.
Rainfall Throughout the Year
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