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 Alton Weather Forecast Summary |
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Today
Jan 7th
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Thursday
Jan 8th
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Friday
Jan 9th
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Saturday
Jan 10th
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Sunday
Jan 11th
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Cloudy |
Mix of rain and snow |
Cloudy |
Cloudy |
Cloudy |
55°F
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43°F
31°F |
37°F
27°F |
30°F
16°F |
27°F
12°F |
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| Alton Detailed Weather Forecast |
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| Wednesday, January 7th, 2026 |
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Evening |
Temperature: 43°F |
| Cloudy. |
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| Thursday, January 8th, 2026 |
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Overnight |
Temperature: 42°F |
| Cloudy. |
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Morning |
Temperature: 41°F |
| Cloudy with a chance of showers. Windy at times. |
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Afternoon |
Temperature: 33°F |
| Cloudy with a chance of flurries or showers. Windy. |
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Evening |
Temperature: 32°F |
| Cloudy with flurries or showers likely. Windy at times. |
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| Friday, January 9th, 2026 |
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Overnight |
Temperature: 28°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 32°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 33°F |
| Cloudy. |
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Evening |
Temperature: 30°F |
| Cloudy. |
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| Saturday, January 10th, 2026 |
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Overnight |
Temperature: 28°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 27°F |
| Cloudy with a slight chance of flurries. Windy. |
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Afternoon |
Temperature: 21°F |
| Mostly cloudy. Windy. |
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Evening |
Temperature: 17°F |
| A mix of cloudy and clear skies. Windy. |
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| Sunday, January 11th, 2026 |
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Overnight |
Temperature: 13°F |
| Clear. Windy at times. |
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Morning |
Temperature: 20°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 25°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 26°F |
| Cloudy. Windy at times. |
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| Monday, January 12th, 2026 |
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Overnight |
Temperature: 28°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 36°F |
| A mix of cloud and sun. Windy. |
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Afternoon |
Temperature: 37°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 36°F |
| Clear with cloudy periods. Windy at times. |
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| Tuesday, January 13th, 2026 |
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Overnight |
Temperature: 35°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 37°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 35°F |
| Cloudy with a slight chance of flurries or showers. Risk of freezing rain. |
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Evening |
Temperature: 34°F |
| Cloudy with flurries or showers likely. |
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| Wednesday, January 14th, 2026 |
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Overnight |
Temperature: 34°F |
| Cloudy with a chance of flurries or showers. Risk of freezing rain. Windy at times. |
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Morning |
Temperature: 31°F |
| Cloudy with a chance of flurries or showers. Windy at times. |
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Afternoon |
Temperature: 31°F |
| A mix of cloud and sun. Windy at times. |
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Evening |
Temperature: 24°F |
| Cloudy. |
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| Thursday, January 15th, 2026 |
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Overnight |
Temperature: 17°F |
| Clear. |
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Morning |
Temperature: 22°F |
| Cloudy. |
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Afternoon |
Temperature: 24°F |
| Cloudy. |
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Evening |
Temperature: 21°F |
| A mix of cloudy and clear skies. |
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