Merrillville Weather in May

Merrillville in May sees pleasant daytime temperatures of 22°C (72°F) and nighttime lows of 10°C (50°F). Rainfall is fairly high this month at around 103 mm (4.1 in), so pack a rain jacket to stay dry.

Rainfall in Merrillville in May

Looking at the last 30 years, the data shows about 12 days with rain, averaging 103 mm (4.1 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Merrillville in May

Temperatures in Merrillville in May top out at 22°C (72°F) and drop to 10°C (50°F) overnight. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 10°C (50°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Merrillville in May

Expect a lot of sunshine this month, with about 282 hours of sun. These sunny conditions add to the overall experience.

If you're a fan of comfortable temperatures and drier conditions, May is a great time to visit.

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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 Merrillville's climate page.

Merrillville Temperature in May

Min Temperature 10°C (50°F)  

Max Temperature 22°C (72°F)  

Chance of Rain 40%  

Precipitation 103 mm (4.1 in)  

Rainy days 12 days  

Humidity 64% *  

Sunshine 282 hours *  

Percentage Sunshine 62% *  

* Data from: Chicago, the United States of America (72 KM, 45 Miles).

What to Wear in Merrillville in May

For Merrillville 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 Merrillville in May

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

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 Merrillville's climate page.

More climate data for Merrillville

Temperature Rainfall Sunshine Humidity

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