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 Alton Weather Forecast Summary |
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Today
Dec 26th
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Saturday
Dec 27th
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Sunday
Dec 28th
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Monday
Dec 29th
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Tuesday
Dec 30th
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Cloudy |
Cloudy |
Mix of rain and snow |
Cloudy |
Cloudy |
50°F
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52°F
42°F |
36°F
11°F |
18°F
9°F |
34°F
15°F |
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| Alton Detailed Weather Forecast |
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| Friday, December 26th, 2025 |
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Morning |
Temperature: 43°F |
| Sunny. |
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Afternoon |
Temperature: 43°F |
| Cloudy. |
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Evening |
Temperature: 43°F |
| Cloudy. Windy at times. |
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| Saturday, December 27th, 2025 |
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Overnight |
Temperature: 43°F |
| Cloudy. |
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Morning |
Temperature: 48°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 48°F |
| Cloudy. |
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Evening |
Temperature: 45°F |
| Cloudy. |
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| Sunday, December 28th, 2025 |
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Overnight |
Temperature: 32°F |
| Cloudy. Windy. |
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Morning |
Temperature: 23°F |
| Cloudy with flurries likely. Windy. |
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Afternoon |
Temperature: 18°F |
| Cloudy with a chance of flurries. Windy. |
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Evening |
Temperature: 12°F |
| Cloudy. Windy. |
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| Monday, December 29th, 2025 |
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Overnight |
Temperature: 9°F |
| Cloudy. Wind 20 to 30 mph. |
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Morning |
Temperature: 14°F |
| Sunny. Windy. |
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Afternoon |
Temperature: 15°F |
| Sunny with cloudy periods. |
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Evening |
Temperature: 15°F |
| A mix of cloudy and clear skies. |
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| Tuesday, December 30th, 2025 |
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Overnight |
Temperature: 15°F |
| Mostly clear. |
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Morning |
Temperature: 27°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 28°F |
| Sunny. |
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Evening |
Temperature: 28°F |
| A mix of cloudy and clear skies. Windy at times. |
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| Wednesday, December 31st, 2025 |
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Overnight |
Temperature: 20°F |
| Clear with cloudy periods. |
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Morning |
Temperature: 20°F |
| Cloudy. |
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Afternoon |
Temperature: 21°F |
| Cloudy. |
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Evening |
Temperature: 15°F |
| Cloudy. Windy at times. |
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| Thursday, January 1st, 2026 |
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Overnight |
Temperature: 12°F |
| Cloudy. |
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Morning |
Temperature: 15°F |
| Cloudy. |
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Afternoon |
Temperature: 18°F |
| A mix of cloud and sun. |
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Evening |
Temperature: 17°F |
| Clear. |
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| Friday, January 2nd, 2026 |
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Overnight |
Temperature: 15°F |
| Clear. |
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Morning |
Temperature: 23°F |
| Cloudy. |
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Afternoon |
Temperature: 23°F |
| Cloudy. |
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Evening |
Temperature: 24°F |
| Cloudy. Windy at times. |
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| Saturday, January 3rd, 2026 |
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Overnight |
Temperature: 27°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 36°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 35°F |
| Sunny. |
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Evening |
Temperature: 32°F |
| Clear. |
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