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 Alton Weather Forecast Summary |
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Today
Feb 14th
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Sunday
Feb 15th
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Monday
Feb 16th
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Tuesday
Feb 17th
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Wednesday
Feb 18th
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Showers |
Showers |
Cloudy |
Cloudy |
Cloudy |
47°F
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58°F
44°F |
62°F
43°F |
62°F
46°F |
66°F
51°F |
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| Alton Detailed Weather Forecast |
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| Saturday, February 14th, 2026 |
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Morning |
Temperature: 46°F |
| Cloudy with showers. Windy at times. |
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Afternoon |
Temperature: 45°F |
| Cloudy with showers. Windy at times. |
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Evening |
Temperature: 45°F |
| Cloudy with periods of rain. Windy at times. |
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| Sunday, February 15th, 2026 |
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Overnight |
Temperature: 45°F |
| Cloudy with a few showers. Windy at times. |
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Morning |
Temperature: 53°F |
| Sunny with cloudy periods. Windy at times. |
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Afternoon |
Temperature: 51°F |
| Sunny. |
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Evening |
Temperature: 47°F |
| Clear. |
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| Monday, February 16th, 2026 |
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Overnight |
Temperature: 44°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 55°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 53°F |
| Cloudy. |
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Evening |
Temperature: 48°F |
| Cloudy. Windy at times. |
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| Tuesday, February 17th, 2026 |
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Overnight |
Temperature: 46°F |
| Cloudy. |
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Morning |
Temperature: 56°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 58°F |
| Cloudy. Windy. |
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Evening |
Temperature: 58°F |
| Cloudy. Windy. |
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| Wednesday, February 18th, 2026 |
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Overnight |
Temperature: 59°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 63°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 57°F |
| Sunny. |
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Evening |
Temperature: 52°F |
| Cloudy. |
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| Thursday, February 19th, 2026 |
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Overnight |
Temperature: 49°F |
| Clear with cloudy periods. |
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Morning |
Temperature: 63°F |
| Cloudy with a slight chance of showers or thundershowers. Windy. |
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Afternoon |
Temperature: 58°F |
| Sunny with cloudy periods. Windy at times. |
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Evening |
Temperature: 53°F |
| Cloudy. Windy at times. |
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| Friday, February 20th, 2026 |
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Overnight |
Temperature: 42°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 45°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 44°F |
| Cloudy. |
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Evening |
Temperature: 40°F |
| Cloudy. |
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| Saturday, February 21st, 2026 |
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Overnight |
Temperature: 34°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 45°F |
| Sunny with cloudy periods. |
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Afternoon |
Temperature: 46°F |
| Sunny with cloudy periods. |
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Evening |
Temperature: 41°F |
| Cloudy. |
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| Sunday, February 22nd, 2026 |
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Overnight |
Temperature: 38°F |
| Mostly clear. |
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Morning |
Temperature: 42°F |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 39°F |
| Sunny. |
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Evening |
Temperature: 33°F |
| Cloudy. |
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