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Alton weather
Current conditions and a 14-day forecast for Alton, United States. Looking for typical seasonal weather instead? See the historical climate averages.
Now
23°C
Overcast · feels 27°C
Humidity
97%
relative humidity
Wind
4 km/h
10m wind speed
Chance of rain
17%
today
Next 24 hours in Alton
| Time | Conditions | Temp | Rain chance |
|---|---|---|---|
| 6am | Overcast | 23°C | 3% |
| 7am | Partly cloudy | 23°C | 5% |
| 8am | Overcast | 24°C | 6% |
| 9am | Partly cloudy | 25°C | 7% |
| 10am | Partly cloudy | 26°C | 10% |
| 11am | Mainly clear | 27°C | 11% |
| 12pm | Mainly clear | 29°C | 10% |
| 1pm | Mainly clear | 30°C | 14% |
| 2pm | Overcast | 30°C | 15% |
| 3pm | Overcast | 30°C | 12% |
| 4pm | Overcast | 30°C | 12% |
| 5pm | Overcast | 30°C | 13% |
| 6pm | Overcast | 30°C | 17% |
| 7pm | Overcast | 29°C | 13% |
| 8pm | Mainly clear | 28°C | 9% |
| 9pm | Clear sky | 27°C | 7% |
| 10pm | Clear sky | 26°C | 5% |
| 11pm | Clear sky | 25°C | 4% |
| 12am | Clear sky | 24°C | 3% |
| 1am | Clear sky | 24°C | 3% |
| 2am | Clear sky | 23°C | 3% |
| 3am | Clear sky | 23°C | 3% |
| 4am | Clear sky | 22°C | 3% |
| 5am | Clear sky | 22°C | 4% |
14-day forecast for Alton
| Day | Conditions | High / Low | Rain chance |
|---|---|---|---|
| Today | Fog | 30° / 21° | 17% |
| Fri, Jul 17 | Overcast | 34° / 22° | 24% |
| Sat, Jul 18 | Overcast | 35° / 22° | 10% |
| Sun, Jul 19 | Overcast | 37° / 23° | 14% |
| Mon, Jul 20 | Overcast | 39° / 24° | 5% |
| Tue, Jul 21 | Light drizzle | 39° / 24° | 4% |
| Wed, Jul 22 | Light drizzle | 25° / 19° | 6% |
| Thu, Jul 23 | Overcast | 33° / 18° | 6% |
| Fri, Jul 24 | Overcast | 35° / 23° | 8% |
| Sat, Jul 25 | Overcast | 41° / 24° | 8% |
| Sun, Jul 26 | Overcast | 36° / 23° | 13% |
| Mon, Jul 27 | Light drizzle | 37° / 23° | 29% |
| Tue, Jul 28 | Light drizzle | 40° / 25° | 33% |
| Wed, Jul 29 | Moderate drizzle | 34° / 23° | 27% |
Want more sun and moon detail for Alton? Use the sun calculator or moon calculator and search for Alton. For a live look at any other city, try the interactive weather tool.
Frequently asked questions
What's the weather like in Alton today?
Current conditions and today's forecast for Alton, United States are shown above, refreshed regularly through the day.
How accurate is a 14-day forecast?
A forecast is most reliable for the next 3-5 days. Beyond that, temperature and precipitation chances further out are a general trend rather than an exact prediction.
What is Alton's weather usually like?
For long-term averages — typical monthly temperatures and rainfall based on years of historical data — see Alton's climate page rather than this live forecast.