 |
 Current Alton Weather Conditions |
Updated December 15th at 6:45 am |
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| Temperature: | 12°F |
Dew Point: | 3°F |
| Barometer: | 30.45 inHg |
Wind: | N 21 Mph |
| Humidity: | 63.1% |
Visibility: | 0M |
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| Alton Weather Forecast Summary |
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Today
Dec 15th
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Tuesday
Dec 16th
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Wednesday
Dec 17th
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Thursday
Dec 18th
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Friday
Dec 19th
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Mostly Sunny |
Cloudy |
Cloudy |
Mix of rain and snow |
Cloudy |
39°F
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49°F
28°F |
49°F
37°F |
54°F
22°F |
32°F
20°F |
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| Alton Detailed Weather Forecast |
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| Monday, December 15th, 2025 |
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Morning |
Temperature: 29°F |
| Sunny with cloudy periods. Windy at times. |
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Afternoon |
Temperature: 31°F |
| Sunny. |
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Evening |
Temperature: 29°F |
| Clear. |
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| Tuesday, December 16th, 2025 |
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Overnight |
Temperature: 29°F |
| Clear. |
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Morning |
Temperature: 42°F |
| Sunny with cloudy periods. Windy at times. |
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Afternoon |
Temperature: 40°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 38°F |
| Cloudy. Windy at times. |
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| Wednesday, December 17th, 2025 |
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Overnight |
Temperature: 38°F |
| Cloudy. |
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Morning |
Temperature: 44°F |
| Sunny. |
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Afternoon |
Temperature: 43°F |
| A mix of cloud and sun. |
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Evening |
Temperature: 45°F |
| Cloudy. Windy at times. |
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| Thursday, December 18th, 2025 |
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Overnight |
Temperature: 50°F |
| Cloudy with a slight chance of showers. Windy. |
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Morning |
Temperature: 49°F |
| Cloudy with a few showers. Windy. |
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Afternoon |
Temperature: 43°F |
| Mostly cloudy with a chance of showers. Windy at times. |
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Evening |
Temperature: 24°F |
| A mix of cloudy and clear skies with flurries likely. Windy. |
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| Friday, December 19th, 2025 |
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Overnight |
Temperature: 21°F |
| Clear. Windy at times. |
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Morning |
Temperature: 27°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 29°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 31°F |
| Cloudy. Windy at times. |
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| Saturday, December 20th, 2025 |
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Overnight |
Temperature: 32°F |
| Cloudy. Windy. |
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Morning |
Temperature: 43°F |
| Cloudy. Windy. |
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Afternoon |
Temperature: 41°F |
| Cloudy. |
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Evening |
Temperature: 38°F |
| A mix of cloudy and clear skies. |
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| Sunday, December 21st, 2025 |
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Overnight |
Temperature: 33°F |
| Cloudy. |
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Morning |
Temperature: 39°F |
| Cloudy. |
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Afternoon |
Temperature: 37°F |
| Cloudy. |
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Evening |
Temperature: 34°F |
| Cloudy. |
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| Monday, December 22nd, 2025 |
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Overnight |
Temperature: 34°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 40°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 40°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 42°F |
| Cloudy. |
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| Tuesday, December 23rd, 2025 |
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Overnight |
Temperature: 43°F |
| Cloudy. |
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Morning |
Temperature: 51°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 47°F |
| Cloudy. |
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Evening |
Temperature: 44°F |
| A mix of cloudy and clear skies. |
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