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This post is about the weather in July in Washington, DC, including average temperatures and rainfall as well as tips on what to wear and things to do.
Early morning low temperatures will be mostly in the upper 60s F to lower 70s F (20-22 C) but can occasionally dip to into the low to mid-60s F (17-18C).
Afternoons tend to get very warm, mostly in the upper 80s F (30-32C) with a few days reaching into the mid to upper 90s F (35-36C).
On average during July, DC will have about 12-14 days reaching or exceeding 90F (about 32C) with temperatures reaching or exceeding 100F (37.8C) about once every two years.
During the past, DC has seen temperature extremes from as low as 54F (12.2 C) to as high as 104F (40 C).
Skies tend to be sunny or at least partly sunny on about 18-20 days during July with some rainfall usually occurring on about 9-10 days.
About 3 days will record significant rainfalls of 1/2 inch (13 mm) or more and there will be a risk for thunderstorms on about 5-7 days this month.
During July, winds tend to be light to moderate but can occasionally gust to 20 mph (32 kph) or more during thunderstorms.
Be sure to read out post on What to Wear and Pack in DC for advice all year round on DC weather and how to prepare for it.
It is very warm in DC during July so dress light for summer, bring an umbrella for the occasional showers and don’t forget a couple of pairs of good walking shoes.
Keep in mind that on hotter days, indoor attractions often have their air conditioning on so a sweater might be needed for museums even if it is warm and sunny outside.
Below are 10 top things to do in DC in July.
Be sure to read our full post on what to do in DC in July which includes free, family-friendly, as well as nighttime activities and attractions.
Likewise, our definitive post on the best things to do in DC any time of year can be valuable.
And if you are planning on visiting many of DC’s top attractions, then you should consider a tourist attraction discount pass as you could save up to 50% of retail ticket prices to tours, attractions, and restaurants.
Be sure to check out all the top things to do in July in our main post.
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