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Alton, IL
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7-Day Forecast
Tonight
Breezy. Chance Rain then Rain/Snow Likely
Low: 35°
Rain and snow likely before 4am, then a chance of snow. Increasing clouds with a low around 35. Breezy with a southwest wind 23 to 28 mph becoming northwest after midnight. Winds could gust as high as 46 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
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Thursday
Gradual Clearing and Breezy then Sunny
High: 49°
Cloudy through mid morning, then gradual clearing with a high near 49. Breezy with a northwest wind 16 to 21 mph with gusts as high as 31 mph.
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Thursday Night
Mostly Clear
Low: 33°
Mostly clear with a low around 33. Northwest wind 5 to 9 mph becoming calm.
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Friday
Mostly Sunny then Partly Sunny and Breezy
High: 65°
Mostly sunny with a high near 65. Breezy with a south wind 8 to 13 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 32 mph.
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Friday Night
Partly Cloudy
Low: 39°
Partly cloudy with a low around 39. West wind 10 to 15 mph with gusts as high as 24 mph.
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Saturday
Sunny
High: 58°
Sunny with a high near 58.
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Saturday Night
Mostly Cloudy then Rain Likely
Low: 43°
Rain likely after 1am. Mostly cloudy with a low around 43. Chance of precipitation is 60%.
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Sunday
Rain
High: 62°
Rain, mainly before 1pm. High near 62. Chance of precipitation is 80%.
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Sunday Night
Mostly Clear
Low: 38°
Mostly clear with a low around 38.
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Monday
Sunny
High: 56°
Sunny with a high near 56.
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Monday Night
Partly Cloudy
Low: 36°
Partly cloudy with a low around 36.
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Tuesday
Mostly Sunny then Slight Chance Rain
High: 58°
A 20% chance of rain. Mostly sunny with a high near 58.
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Tuesday Night
Slight Chance Rain
Low: 38°
A 20% chance of rain. Partly cloudy with a low around 38.
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Wednesday
Mostly Sunny
High: 59°
Mostly sunny with a high near 59.
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Source: National Weather Service
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