Weather in Alton, Illinois, United States

7-Day Detailed Weather Forecast for Alton

Tonight

Temperature: 51°F

Wind Speed: 2 to 6 mph

Wind Direction: SW

Forecast: Patchy fog after 2am. Mostly cloudy, with a low around 51. Southwest wind 2 to 6 mph.

Christmas Day

Temperature: 66°F

Wind Speed: 2 to 6 mph

Wind Direction: NE

Forecast: Patchy fog before 11am. Mostly cloudy. High near 66, with temperatures falling to around 62 in the afternoon. Northeast wind 2 to 6 mph.

Thursday Night

Temperature: 56°F

Wind Speed: 6 mph

Wind Direction: SE

Forecast: Mostly cloudy, with a low around 56. Southeast wind around 6 mph.

Friday

Temperature: 70°F

Wind Speed: 6 to 10 mph

Wind Direction: W

Forecast: Sunny. High near 70, with temperatures falling to around 64 in the afternoon. West wind 6 to 10 mph.

Friday Night

Temperature: 45°F

Wind Speed: 5 mph

Wind Direction: NE

Forecast: Partly cloudy, with a low around 45. Northeast wind around 5 mph.

Saturday

Temperature: 67°F

Wind Speed: 2 to 10 mph

Wind Direction: SE

Forecast: Partly sunny. High near 67, with temperatures falling to around 63 in the afternoon.

Saturday Night

Temperature: 53°F

Wind Speed: 6 to 9 mph

Wind Direction: S

Forecast: Mostly cloudy, with a low around 53.

Sunday

Temperature: 59°F

Wind Speed: 7 to 17 mph

Wind Direction: W

Forecast: Rain likely and a slight chance of thunderstorms. Mostly cloudy, with a high near 59. Chance of precipitation is 60%.

Sunday Night

Temperature: 20°F

Wind Speed: 18 mph

Wind Direction: NW

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

Monday

Temperature: 29°F

Wind Speed: 12 to 18 mph

Wind Direction: NW

Forecast: Mostly sunny, with a high near 29.

Monday Night

Temperature: 18°F

Wind Speed: 6 to 10 mph

Wind Direction: NW

Forecast: Mostly clear, with a low around 18.

Tuesday

Temperature: 35°F

Wind Speed: 6 to 9 mph

Wind Direction: W

Forecast: Mostly sunny, with a high near 35.

Tuesday Night

Temperature: 24°F

Wind Speed: 9 mph

Wind Direction: W

Forecast: Mostly clear, with a low around 24.

Wednesday

Temperature: 41°F

Wind Speed: 12 mph

Wind Direction: W

Forecast: Mostly sunny, with a high near 41.