5-Day Weather Forecast, Alton (IL)

Thu May 16

24°C | 16°C

18 km/h

4.2 mm

broken clouds and rain

hourly forecast

Fri May 17

23°C | 14°C

11 km/h

0.3 mm

broken clouds and slight rain

hourly forecast

Sat May 18

27°C | 14°C

11 km/h

almost clear and no rain

hourly forecast

Sun May 19

30°C | 15°C

11 km/h

partly cloudy and no rain

Mon May 20

29°C | 19°C

22 km/h

0.2 mm

partly cloudy and thunder

See the 10-day forecast for popular European destinations

Europe Forecast

Get more details in the extended 10 day weather forecast for Alton. Check out our May climate page to see if the current temperatures in Alton is typical for this time of year.

Travel Inspiration

Yellowstone National Park is the crown jewel of America's nature parks

Nature in Yellowstone is overwhelmingly beautiful. It is the largest National Park in America, the oldest national park in the world and one of the most beautiful natural areas worldwide.

10 most idyllic villages to visit in the United States

Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.

Sedona: Artists, Spirituality, and Majestic Red Rock Landscapes

A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.

Yosemite National Park is definitely worth a visit

Vast forests, bright blue freshwater lakes, dazzlingly tall sequoia trees and towering waterfalls are just a few hints to describe the Yosemite National Park. Yosemite is a true masterpiece.