Washington DC weather in September (United States of America)
What kind of temperatures can you expect in Washington DC during September? Want to know if this month is ideal for visiting? Our guide provides detailed weather information.
Temperatures
For September, the weather in Washington DC is generally perfect, featuring high temperatures and moderate rainfall. As the day progresses, temperatures can peak at 27°C. Luckily at nightfall, they typically drop to 17°C.
Precipitation
Washington DC in September usually receives moderate rainfall, averaging around 88 mm for the month. Expect around 9 days of rain based on historical data.Average sunshine
With approximately 225 hours hours of sun, the days are filled with brightness. It makes it a perfect month for outdoor activities.If you're inclined towards comfortable temperatures and drier conditions, September is a prime time to visit Washington DC. April and September typically offer the best circumstances. While January, February and December tend to showcase less optimal conditions.
Need inspiration to choose your next destination? Our innovative weather planner helps you discover the perfect getaway tailored to your ideal climate conditions.
Washington DC, monthly averages in September
Min Temperature
17°C
Max Temperature
27°C
Chance of Rain
30%
Precipitation
88 mm
Rainy days
9 days
Humidity
68%
Windspeed
4 m/s
Sunshine
225 hours
Percentage Sunshine
60%
Where to go in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in this month?
It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Interested in more climate information?
This site provides you with all the information you need about the climate in Washington DC.
Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find 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.
