 |
 Current Alton Weather Conditions |
Updated December 18th at 6:50 pm |
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| light rain |
| Temperature: | 39°F |
Dew Point: | 36°F |
| Barometer: | 29.62 inHg |
Wind: | N 34 Mph |
| Humidity: | 86.8% |
Visibility: | 0M |
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| Alton Weather Forecast Summary |
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Today
Dec 18th
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Friday
Dec 19th
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Saturday
Dec 20th
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Sunday
Dec 21st
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Monday
Dec 22nd
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Mix of rain and snow |
Cloudy |
Cloudy |
Cloudy |
Cloudy |
55°F
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36°F
26°F |
50°F
33°F |
37°F
28°F |
35°F
28°F |
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| Alton Detailed Weather Forecast |
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| Thursday, December 18th, 2025 |
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Evening |
Temperature: 28°F |
| A mix of cloudy and clear skies. Windy. |
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| Friday, December 19th, 2025 |
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Overnight |
Temperature: 26°F |
| Clear. Windy. |
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Morning |
Temperature: 32°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 31°F |
| Sunny. |
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Evening |
Temperature: 32°F |
| Cloudy. Windy at times. |
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| Saturday, December 20th, 2025 |
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Overnight |
Temperature: 35°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 44°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 39°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 33°F |
| Clear with cloudy periods. |
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| Sunday, December 21st, 2025 |
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Overnight |
Temperature: 32°F |
| Clear. Windy at times. |
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Morning |
Temperature: 34°F |
| A mix of cloud and sun. Windy at times. |
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Afternoon |
Temperature: 30°F |
| A mix of cloud and sun. |
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Evening |
Temperature: 29°F |
| Cloudy. Windy at times. |
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| Monday, December 22nd, 2025 |
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Overnight |
Temperature: 29°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 34°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 34°F |
| Sunny. Windy at times. |
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Evening |
Temperature: 35°F |
| Clear with cloudy periods. Windy at times. |
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| Tuesday, December 23rd, 2025 |
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Overnight |
Temperature: 39°F |
| Cloudy. Windy at times. |
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Morning |
Temperature: 48°F |
| Cloudy with a chance of showers. |
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Afternoon |
Temperature: 53°F |
| Cloudy. |
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Evening |
Temperature: 54°F |
| Cloudy. |
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| Wednesday, December 24th, 2025 |
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Overnight |
Temperature: 55°F |
| Cloudy. |
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Morning |
Temperature: 62°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 61°F |
| Mostly sunny. |
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Evening |
Temperature: 59°F |
| Cloudy. Windy at times. |
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| Thursday, December 25th, 2025 |
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Overnight |
Temperature: 56°F |
| Cloudy. |
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Morning |
Temperature: 63°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 62°F |
| Cloudy. |
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Evening |
Temperature: 62°F |
| Cloudy with a slight chance of showers. Windy at times. |
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| Friday, December 26th, 2025 |
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Overnight |
Temperature: 52°F |
| Cloudy with a slight chance of showers. Windy. |
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Morning |
Temperature: 46°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 42°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 40°F |
| Cloudy. |
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