Alton Airport (ALN) 15 Day Weather Forecast, Alton United States
Current weather conditions and 15 day weather forecast for Alton Airport in Alton, United States including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at ALN
| 04 April 2026 Sat 26.2 ° C ( 79.2°F )  Partly cloudy |
Feels Like : 27.7 ° C / 81.8°F Humidity : % 54 Pressure : 1014 mb Wind Speed : 23.8 kmph / 14.8 miles from S 
Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 50 |
15-day weather forecast for Alton Airport, Alton, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 03 April 2026 Fri |  Moderate rain |
16.4 ° C | 28.3 ° C | 22 ° C | % 70 | 24.1 km/h | 87% |
| 04 April 2026 Sat | Moderate rain |
6.8 ° C | 17.5 ° C | 14 ° C | % 79 | 29.9 km/h | 89% |
| 05 April 2026 Sun |  Sunny |
2 ° C | 16.7 ° C | 9.1 ° C | % 67 | 22 km/h | 0% |
| 06 April 2026 Mon | Sunny |
2.5 ° C | 16.8 ° C | 9.7 ° C | % 62 | 23.8 km/h | 0% |
| 07 April 2026 Tue |  Patchy rain nearby |
1.1 ° C | 9.4 ° C | 5.4 ° C | % 58 | 18.4 km/h | 75% |
| 08 April 2026 Wed | Partly Cloudy |
4.1 ° C | 19.7 ° C | 8.8 ° C | % 64 | 28.1 km/h | 0% |
| 09 April 2026 Thu | Partly Cloudy |
11.6 ° C | 21.2 ° C | 15.8 ° C | % 77 | 22.7 km/h | 0% |
| 10 April 2026 Fri | Patchy rain nearby |
13.4 ° C | 22 ° C | 17.5 ° C | % 78 | 30.2 km/h | 87% |
| 11 April 2026 Sat | Patchy rain nearby |
15.5 ° C | 19.3 ° C | 17.6 ° C | % 88 | 18.7 km/h | 83% |
| 12 April 2026 Sun | Moderate rain |
16.8 ° C | 23.6 ° C | 19.8 ° C | % 89 | 12.6 km/h | 88% |
| 13 April 2026 Mon | Moderate rain |
17.9 ° C | 25.5 ° C | 20.5 ° C | % 87 | 26.6 km/h | 87% |
| 14 April 2026 Tue | Patchy rain nearby |
18.2 ° C | 29.7 ° C | 23.3 ° C | % 77 | 20.9 km/h | 69% |
| 15 April 2026 Wed | Moderate rain |
4.8 ° C | 15.8 ° C | 11.2 ° C | % 89 | 24.1 km/h | 84% |
| 16 April 2026 Thu | Patchy rain nearby |
4.2 ° C | 7.4 ° C | 5.3 ° C | % 81 | 20.2 km/h | 82% |
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