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 Alton Weather Forecast Summary |
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Today
Jan 18th
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Monday
Jan 19th
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Tuesday
Jan 20th
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Wednesday
Jan 21st
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Thursday
Jan 22nd
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Mostly Sunny |
Cloudy |
Cloudy |
Cloudy |
Cloudy |
36°C
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35°C
23°C |
32°C
22°C |
32°C
22°C |
36°C
22°C |
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| Alton Detailed Weather Forecast |
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| Sunday, January 18th, 2026 |
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Morning |
Temperature: 35°C |
| A mix of cloud and sun. Chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 29°C |
| A mix of cloud and sun with a chance of showers. Slight chance of a thunderstorm. Windy. |
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Evening |
Temperature: 25°C |
| Clear with cloudy periods. Windy. |
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| Monday, January 19th, 2026 |
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Overnight |
Temperature: 23°C |
| A mix of cloudy and clear skies with a chance of showers. Windy at times. |
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Morning |
Temperature: 31°C |
| Sunny with a chance of showers. Slight chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 33°C |
| Cloudy. |
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Evening |
Temperature: 25°C |
| Mostly clear. Wind 30 to 50 km/h. |
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| Tuesday, January 20th, 2026 |
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Overnight |
Temperature: 22°C |
| Clear. Windy at times. |
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Morning |
Temperature: 30°C |
| Sunny with cloudy periods. Slight chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 32°C |
| Sunny with cloudy periods. Windy at times. |
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Evening |
Temperature: 25°C |
| Cloudy with a chance of showers. Windy. |
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| Wednesday, January 21st, 2026 |
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Overnight |
Temperature: 22°C |
| Cloudy with a slight chance of showers. Windy at times. |
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Morning |
Temperature: 28°C |
| A mix of cloud and sun. Windy at times. |
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Afternoon |
Temperature: 31°C |
| Sunny. |
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Evening |
Temperature: 26°C |
| Clear with cloudy periods. Windy. |
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| Thursday, January 22nd, 2026 |
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Overnight |
Temperature: 23°C |
| A mix of clear and cloudy skies. Windy. |
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Morning |
Temperature: 32°C |
| A mix of cloud and sun. Slight chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 35°C |
| Cloudy. |
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Evening |
Temperature: 28°C |
| Clear with cloudy periods. Slight chance of a thunderstorm. Windy at times. |
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| Friday, January 23rd, 2026 |
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Overnight |
Temperature: 25°C |
| Clear. Slight chance of a thunderstorm. Windy at times. |
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Morning |
Temperature: 33°C |
| Sunny with cloudy periods. Chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 35°C |
| A mix of sun and cloud. Windy. |
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Evening |
Temperature: 29°C |
| Cloudy. Slight chance of a thunderstorm. Windy. |
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| Saturday, January 24th, 2026 |
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Overnight |
Temperature: 24°C |
| Clear. Windy. |
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Morning |
Temperature: 32°C |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 35°C |
| Sunny. |
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Evening |
Temperature: 28°C |
| Clear. Windy. |
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| Sunday, January 25th, 2026 |
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Overnight |
Temperature: 24°C |
| Mostly clear. Windy at times. |
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Morning |
Temperature: 31°C |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 34°C |
| Mostly sunny. Slight chance of a thunderstorm. |
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Evening |
Temperature: 27°C |
| Clear. Wind 30 to 50 km/h. |
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| Monday, January 26th, 2026 |
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Overnight |
Temperature: 22°C |
| Clear. Windy. |
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Morning |
Temperature: 31°C |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 34°C |
| Sunny. Windy at times. |
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Evening |
Temperature: 25°C |
| Clear. Wind 30 to 50 km/h. |
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