Rockville Weather in May

In Rockville, May brings high daytime temperatures around 24°C (75°F), with nights cooling to 13°C (55°F). Expect quite a bit of rainfall this month.

Rainfall in Rockville in May

On average, there are about 13 days with rain during this month, averaging 120 mm (4.7 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Rockville in May

Rockville in May gets highs of 24°C (75°F) during the day and drops to 13°C (55°F) at night. Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights drop to around 13°C (55°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Rockville in May

There are approximately 259 hours of sunshine this month, resulting in mostly clear days.

For Rockville itself, August 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 Rockville's climate page.

Rockville Temperature in May

Min Temperature 13°C (55°F)  

Max Temperature 24°C (75°F)  

Chance of Rain 43%  

Precipitation 120 mm (4.7 in)  

Rainy days 13 days  

Humidity 64% *  

Sunshine 259 hours *  

Percentage Sunshine 59% *  

* Data from: Washington DC, the United States of America (27 KM, 17 Miles).

What to Wear in Rockville in May

Pleasant temperatures in May mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Rockville 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 Rockville's climate page.

More climate data for Rockville

Temperature Rainfall Sunshine Humidity

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