 |
 Current Alton Weather Conditions |
Updated July 15th at 2:50 pm |
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| Overcast |
| Temperature: | 90°F |
Dew Point: | 70°F |
| Barometer: | 30.06 inHg |
Wind: | N 13 Mph |
| Humidity: | 52.3% |
Visibility: | 0M |
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| Alton Weather Forecast Summary |
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Today
Jul 15th
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Thursday
Jul 16th
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Friday
Jul 17th
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Saturday
Jul 18th
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Sunday
Jul 19th
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Sunny |
Mostly Sunny |
Mostly Sunny |
Sunny |
Mostly Sunny |
86°F
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87°F
73°F |
84°F
73°F |
90°F
72°F |
85°F
73°F |
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| Alton Detailed Weather Forecast |
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| Wednesday, July 15th, 2026 |
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Evening |
Temperature: 79°F |
| Clear with a chance of showers or thundershowers. |
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| Thursday, July 16th, 2026 |
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Overnight |
Temperature: 73°F |
| Clear. Slight chance of a thunderstorm. |
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Morning |
Temperature: 78°F |
| Sunny with a chance of showers or thundershowers. |
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Afternoon |
Temperature: 86°F |
| Sunny with a chance of showers or thundershowers. |
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Evening |
Temperature: 80°F |
| A mix of clear and cloudy skies with a chance of showers or thundershowers. |
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| Friday, July 17th, 2026 |
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Overnight |
Temperature: 74°F |
| Mostly clear with a chance of showers or thundershowers. |
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Morning |
Temperature: 78°F |
| Mostly sunny with a slight chance of showers or thundershowers. Windy at times. |
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Afternoon |
Temperature: 84°F |
| A mix of cloud and sun with a chance of showers or thundershowers. Windy at times. |
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Evening |
Temperature: 79°F |
| Clear with cloudy periods with a chance of showers or thundershowers. |
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| Saturday, July 18th, 2026 |
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Overnight |
Temperature: 73°F |
| Clear with a chance of showers. Slight chance of a thunderstorm. |
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Morning |
Temperature: 77°F |
| Sunny. Chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 89°F |
| Sunny. Chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 82°F |
| Clear. Chance of a thunderstorm. Windy at times. |
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| Sunday, July 19th, 2026 |
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Overnight |
Temperature: 74°F |
| Clear with cloudy periods with a slight chance of showers or thundershowers. |
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Morning |
Temperature: 77°F |
| Sunny. Chance of a thunderstorm. |
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Afternoon |
Temperature: 85°F |
| Sunny with cloudy periods. Chance of a thunderstorm. |
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Evening |
Temperature: 79°F |
| Clear with a chance of showers or thundershowers. |
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| Monday, July 20th, 2026 |
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Overnight |
Temperature: 73°F |
| Mostly clear with a slight chance of showers or thundershowers. |
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Morning |
Temperature: 80°F |
| Mostly sunny. Chance of a thunderstorm. Windy at times. |
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Afternoon |
Temperature: 92°F |
| Mostly sunny. Chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 83°F |
| Clear. Chance of a thunderstorm. Windy at times. |
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| Tuesday, July 21st, 2026 |
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Overnight |
Temperature: 73°F |
| Clear. Windy at times. |
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Morning |
Temperature: 66°F |
| Sunny. Windy at times. |
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Afternoon |
Temperature: 74°F |
| Mostly sunny. |
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Evening |
Temperature: 67°F |
| Mostly clear. |
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| Wednesday, July 22nd, 2026 |
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Overnight |
Temperature: 62°F |
| Mostly clear. |
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Morning |
Temperature: 67°F |
| Sunny with cloudy periods. |
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Afternoon |
Temperature: 77°F |
| Mostly sunny. |
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Evening |
Temperature: 69°F |
| Clear with cloudy periods. |
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| Thursday, July 23rd, 2026 |
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Overnight |
Temperature: 64°F |
| Clear with cloudy periods. |
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Morning |
Temperature: 67°F |
| A mix of cloud and sun. Windy at times. |
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Afternoon |
Temperature: 82°F |
| Sunny with cloudy periods. Chance of a thunderstorm. Windy at times. |
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Evening |
Temperature: 78°F |
| Clear. Chance of a thunderstorm. Windy at times. |
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