Weather in Alton, Illinois, United States

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7-Day Detailed Weather Forecast for Alton

Tonight

Temperature: 70°F

Wind Speed: 5 mph

Wind Direction: SW

Forecast: Mostly clear, with a low around 70. Southwest wind around 5 mph.

Saturday

Temperature: 88°F

Wind Speed: 5 to 10 mph

Wind Direction: NW

Forecast: Sunny, with a high near 88. Northwest wind 5 to 10 mph.

Saturday Night

Temperature: 64°F

Wind Speed: 2 to 9 mph

Wind Direction: N

Forecast: Mostly clear, with a low around 64. North wind 2 to 9 mph.

Sunday

Temperature: 84°F

Wind Speed: 2 to 7 mph

Wind Direction: N

Forecast: Sunny, with a high near 84. North wind 2 to 7 mph.

Sunday Night

Temperature: 63°F

Wind Speed: 1 to 6 mph

Wind Direction: NE

Forecast: Partly cloudy, with a low around 63. Northeast wind 1 to 6 mph.

Monday

Temperature: 82°F

Wind Speed: 2 to 6 mph

Wind Direction: SE

Forecast: Partly sunny, with a high near 82.

Monday Night

Temperature: 66°F

Wind Speed: 6 mph

Wind Direction: E

Forecast: Mostly cloudy, with a low around 66.

Tuesday

Temperature: 86°F

Wind Speed: 8 mph

Wind Direction: SE

Forecast: Partly sunny, with a high near 86.

Tuesday Night

Temperature: 68°F

Wind Speed: 2 to 7 mph

Wind Direction: SE

Forecast: Partly cloudy, with a low around 68.

Wednesday

Temperature: 88°F

Wind Speed: 2 to 6 mph

Wind Direction: SW

Forecast: Mostly sunny, with a high near 88.

Wednesday Night

Temperature: 68°F

Wind Speed: 1 to 5 mph

Wind Direction: NW

Forecast: Partly cloudy, with a low around 68.

Thursday

Temperature: 89°F

Wind Speed: 1 to 7 mph

Wind Direction: NW

Forecast: Sunny, with a high near 89.

Thursday Night

Temperature: 68°F

Wind Speed: 1 to 7 mph

Wind Direction: NE

Forecast: Mostly clear, with a low around 68.

Friday

Temperature: 88°F

Wind Speed: 1 to 7 mph

Wind Direction: NE

Forecast: Mostly sunny, with a high near 88.