Weather in Alton, Illinois, United States

7-Day Detailed Weather Forecast for Alton

Tonight

Temperature: 48°F

Wind Speed: 3 mph

Wind Direction: SE

Forecast: Mostly cloudy, with a low around 48. Southeast wind around 3 mph.

Thursday

Temperature: 70°F

Wind Speed: 3 to 16 mph

Wind Direction: S

Forecast: Scattered showers and thunderstorms between 9am and 11am, then a chance of showers and thunderstorms between 11am and noon, then scattered showers and thunderstorms between noon and 4pm. Partly sunny. High near 70, with temperatures falling to around 66 in the afternoon. South wind 3 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

Thursday Night

Temperature: 35°F

Wind Speed: 10 to 18 mph

Wind Direction: W

Forecast: Mostly clear, with a low around 35. West wind 10 to 18 mph, with gusts as high as 28 mph.

Friday

Temperature: 49°F

Wind Speed: 7 to 17 mph

Wind Direction: W

Forecast: Sunny, with a high near 49. West wind 7 to 17 mph, with gusts as high as 26 mph.

Friday Night

Temperature: 30°F

Wind Speed: 6 mph

Wind Direction: NW

Forecast: Partly cloudy, with a low around 30. Northwest wind around 6 mph.

Saturday

Temperature: 45°F

Wind Speed: 6 to 12 mph

Wind Direction: NW

Forecast: A slight chance of rain and snow after noon. Mostly sunny, with a high near 45. Chance of precipitation is 20%.

Saturday Night

Temperature: 25°F

Wind Speed: 9 to 13 mph

Wind Direction: NW

Forecast: Mostly clear, with a low around 25.

Sunday

Temperature: 39°F

Wind Speed: 13 to 18 mph

Wind Direction: NW

Forecast: Sunny, with a high near 39.

Sunday Night

Temperature: 20°F

Wind Speed: 12 mph

Wind Direction: NW

Forecast: Mostly clear, with a low around 20.

Monday

Temperature: 39°F

Wind Speed: 6 to 10 mph

Wind Direction: NW

Forecast: Sunny, with a high near 39.

Monday Night

Temperature: 22°F

Wind Speed: 5 mph

Wind Direction: NE

Forecast: Mostly clear, with a low around 22.

Tuesday

Temperature: 50°F

Wind Speed: 5 to 15 mph

Wind Direction: S

Forecast: Mostly sunny, with a high near 50.

Tuesday Night

Temperature: 38°F

Wind Speed: 13 mph

Wind Direction: S

Forecast: Mostly cloudy, with a low around 38.

Wednesday

Temperature: 57°F

Wind Speed: 10 to 14 mph

Wind Direction: SW

Forecast: A slight chance of rain. Partly sunny, with a high near 57. Chance of precipitation is 20%.