 |
 Current Alton Weather Conditions |
Updated September 17th at 6:50 pm |
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| Temperature: | 81°F |
Dew Point: | 61°F |
| Barometer: | 29.98 inHg |
Wind: | 6 Mph |
| Humidity: | 51.0% |
Visibility: | 0M |
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| Alton Weather Forecast Summary |
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Today
Sep 17th
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Thursday
Sep 18th
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Friday
Sep 19th
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Saturday
Sep 20th
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Sunday
Sep 21st
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Sunny |
Cloudy |
Showers |
Cloudy |
Showers |
89°F
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92°F
63°F |
78°F
64°F |
85°F
63°F |
87°F
61°F |
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| Alton Detailed Weather Forecast |
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| Wednesday, September 17th, 2025 |
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Evening |
Temperature: 70°F |
| Clear. |
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| Thursday, September 18th, 2025 |
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Overnight |
Temperature: 64°F |
| A mix of clear and cloudy skies. |
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Morning |
Temperature: 85°F |
| A mix of cloud and sun. |
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Afternoon |
Temperature: 86°F |
| Cloudy. |
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Evening |
Temperature: 74°F |
| Cloudy. |
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| Friday, September 19th, 2025 |
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Overnight |
Temperature: 65°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 77°F |
| Cloudy. Slight chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 75°F |
| Cloudy. Slight chance of a thunderstorm. |
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Evening |
Temperature: 66°F |
| Cloudy with showers likely. Slight chance of a thunderstorm. |
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| Saturday, September 20th, 2025 |
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Overnight |
Temperature: 64°F |
| Cloudy with a chance of showers. |
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Morning |
Temperature: 77°F |
| Mostly sunny. Slight chance of a thunderstorm. |
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Afternoon |
Temperature: 77°F |
| A mix of cloud and sun with a chance of showers. Slight chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 67°F |
| A mix of cloudy and clear skies with a chance of showers. |
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| Sunday, September 21st, 2025 |
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Overnight |
Temperature: 62°F |
| A mix of cloudy and clear skies. |
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Morning |
Temperature: 78°F |
| Sunny with cloudy periods. |
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Afternoon |
Temperature: 81°F |
| A mix of cloud and sun. |
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Evening |
Temperature: 70°F |
| Cloudy with showers likely. |
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| Monday, September 22nd, 2025 |
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Overnight |
Temperature: 66°F |
| Cloudy with showers likely. |
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Morning |
Temperature: 77°F |
| Cloudy. Windy at times. |
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Afternoon |
Temperature: 76°F |
| Cloudy with a chance of showers. Slight chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 67°F |
| Cloudy with showers likely. Windy at times. |
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| Tuesday, September 23rd, 2025 |
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Overnight |
Temperature: 66°F |
| Cloudy with a chance of showers. |
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Morning |
Temperature: 73°F |
| Sunny with cloudy periods with a slight chance of showers. Windy at times. |
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Afternoon |
Temperature: 76°F |
| Sunny. |
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Evening |
Temperature: 65°F |
| Clear. |
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| Wednesday, September 24th, 2025 |
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Overnight |
Temperature: 63°F |
| Clear. |
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Morning |
Temperature: 82°F |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 84°F |
| Cloudy. Windy at times. |
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Evening |
Temperature: 74°F |
| Cloudy. |
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| Thursday, September 25th, 2025 |
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Overnight |
Temperature: 68°F |
| Clear. |
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Morning |
Temperature: 84°F |
| Sunny. Slight chance of a thunderstorm. |
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Afternoon |
Temperature: 86°F |
| Cloudy. Slight chance of a thunderstorm. |
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Evening |
Temperature: 78°F |
| Cloudy. Slight chance of a thunderstorm. |
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