McLean Weather in May

May in McLean brings high temperatures, with highs of 24°C (75°F) and nights dropping to 13°C (55°F). Rainfall is on the higher side this month, averaging around 118 mm (4.6 in), so keep a rain jacket handy.

Rainfall in McLean in May

Historically, the month has about 13 days of rain, averaging 118 mm (4.6 in) in total. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in McLean in May

In May, expect high temperatures in McLean, with highs of 24°C (75°F) and lows of 13°C (55°F) at night. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 13°C (55°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in McLean in May

The days are predominantly sunny, with an estimated total of around 259 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

Wind Speed in McLean in May

Wind speeds average 4 m/s (8 knots) during May. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.

For McLean itself, April generally stands out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit the United States of America, check out our McLean's climate page.

McLean Temperature in May

Min Temperature 13°C (55°F)  

Max Temperature 24°C (75°F)  

Chance of Rain 43%  

Precipitation 118 mm (4.6 in)  

Rainy days 13 days  

Humidity 64% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 259 hours *  

Percentage Sunshine 59% *  

* Data from: Washington DC, the United States of America (15 KM, 9 Miles).

What to Wear in McLean in May

For McLean in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in McLean in May

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our McLean's climate page.

More climate data for McLean

Temperature Rainfall Sunshine Humidity Wind Speed

See the full McLean climate overview or explore weather in the United States of America.