Temperature in District of Columbia in September

Daytime highs, nighttime lows and the warmest cities in District of Columbia, the United States of America this September.

District of Columbia, the United States of America, a region in the United States of America, typically experiences warm weather in September, with maximum daytime temperatures around 27°C (81°F) and nighttime temperatures around 17°C (63°F) in Washington.

What is the temperature of the different cities in District of Columbia, the United States of America in September?

Find the average daytime temperatures in September for the most popular destinations in District of Columbia on the map below. Click on a destination dot for more detailed information.

Select a Month

Check the conditions for any month of the year.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

For a detailed overview over the year and the best time to visit District of Columbia, check out our District of Columbia's climate page.

See also: District of Columbia weather by month.

Best Places to Visit in District of Columbia in September

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across District of Columbia.

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in September: blue is cold, red is hot.

See all September weather averages, cities and regions in District of Columbia

District of Columbia temperatures in September: frequently asked questions

How hot does it get in District of Columbia, the United States of America in September?

Average daytime highs in District of Columbia, the United States of America during September reach about 27°C (81°F) in Washington.

How cold does it get at night in District of Columbia, the United States of America in September?

After dark, Washington cools to about 17°C (63°F) on an average September night.

How much sun does District of Columbia, the United States of America get in September?

Washington enjoys close to 225 hours of sunlight. This not only brightens the days but also uplifts the atmosphere during the month.

Interested in more climate information?

We have much more information about the climate in District of Columbia.

Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed historical weather averages for many cities in the United States of America.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.

Yosemite National Park is definitely worth a visit

Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
The 10 most alternative cities in the United States

Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Sedona: Explore Majestic Red Rock Landscapes

A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.
10 most idyllic villages to visit in the United States

Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.
Must visit in the United States of America →