Weather in Alton, Illinois, United States

7-Day Detailed Weather Forecast for Alton

This Afternoon

Temperature: 68°F

Wind Speed: 5 to 8 mph

Wind Direction: E

Forecast: Mostly sunny, with a high near 68. East wind 5 to 8 mph.

Tonight

Temperature: 34°F

Wind Speed: 2 to 21 mph

Wind Direction: W

Forecast: Partly cloudy, with a low around 34. West wind 2 to 21 mph, with gusts as high as 38 mph.

Friday

Temperature: 48°F

Wind Speed: 9 to 21 mph

Wind Direction: W

Forecast: Sunny, with a high near 48. West wind 9 to 21 mph, with gusts as high as 36 mph.

Friday Night

Temperature: 29°F

Wind Speed: 6 mph

Wind Direction: NW

Forecast: Partly cloudy, with a low around 29. Northwest wind around 6 mph.

Saturday

Temperature: 45°F

Wind Speed: 5 to 12 mph

Wind Direction: NW

Forecast: Mostly sunny, with a high near 45. Northwest wind 5 to 12 mph.

Saturday Night

Temperature: 24°F

Wind Speed: 12 mph

Wind Direction: NW

Forecast: Mostly clear, with a low around 24.

Sunday

Temperature: 37°F

Wind Speed: 13 to 20 mph

Wind Direction: NW

Forecast: Sunny, with a high near 37.

Sunday Night

Temperature: 19°F

Wind Speed: 14 mph

Wind Direction: NW

Forecast: Mostly clear, with a low around 19.

Monday

Temperature: 37°F

Wind Speed: 7 to 13 mph

Wind Direction: NW

Forecast: Sunny, with a high near 37.

Monday Night

Temperature: 20°F

Wind Speed: 5 mph

Wind Direction: SW

Forecast: Mostly clear, with a low around 20.

Tuesday

Temperature: 52°F

Wind Speed: 6 to 15 mph

Wind Direction: S

Forecast: Mostly sunny, with a high near 52.

Tuesday Night

Temperature: 39°F

Wind Speed: 9 to 13 mph

Wind Direction: S

Forecast: Mostly cloudy, with a low around 39.

Wednesday

Temperature: 60°F

Wind Speed: 12 mph

Wind Direction: W

Forecast: A slight chance of rain. Partly sunny, with a high near 60. Chance of precipitation is 20%.

Wednesday Night

Temperature: 37°F

Wind Speed: 8 mph

Wind Direction: NW

Forecast: A slight chance of rain. Mostly cloudy, with a low around 37. Chance of precipitation is 20%.