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
| 21 March 2026 Sat 14.1 ° C ( 57.4°F )  Clear |
Feels Like : 13.7 ° C / 56.7°F Humidity : % 72 Pressure : 1013 mb Wind Speed : 8.6 kmph / 5.4 miles from ENE 
Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15-day weather forecast for Alton Airport, Alton, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 21 March 2026 Sat | Sunny |
11.4 ° C | 29.5 ° C | 20.1 ° C | % 62 | 14.8 km/h | 0% |
| 22 March 2026 Sun |  Partly Cloudy |
8.9 ° C | 30.2 ° C | 17.4 ° C | % 80 | 32 km/h | 0% |
| 23 March 2026 Mon |  Cloudy |
3.1 ° C | 12.1 ° C | 7.3 ° C | % 63 | 23.8 km/h | 0% |
| 24 March 2026 Tue | Partly Cloudy |
3.8 ° C | 15 ° C | 8.7 ° C | % 59 | 20.5 km/h | 0% |
| 25 March 2026 Wed |  Patchy rain nearby |
6.3 ° C | 24.5 ° C | 12.1 ° C | % 76 | 25.6 km/h | 88% |
| 26 March 2026 Thu | Partly Cloudy |
15.3 ° C | 26.7 ° C | 19.9 ° C | % 62 | 33.5 km/h | 0% |
| 27 March 2026 Fri | Patchy rain nearby |
5.2 ° C | 6.6 ° C | 7 ° C | % 54 | 25.2 km/h | 85% |
| 28 March 2026 Sat | Patchy rain nearby |
4.7 ° C | 15.5 ° C | 9.6 ° C | % 73 | 16.2 km/h | 84% |
| 29 March 2026 Sun | Patchy rain nearby |
5.4 ° C | 11.4 ° C | 10.1 ° C | % 86 | 22 km/h | 87% |
| 30 March 2026 Mon | Sunny |
18.5 ° C | 29 ° C | 23 ° C | % 59 | 29.5 km/h | 0% |
| 31 March 2026 Tue |  Moderate rain |
11 ° C | 19.9 ° C | 17.1 ° C | % 69 | 22 km/h | 83% |
| 01 April 2026 Wed | Patchy rain nearby |
9.7 ° C | 27.7 ° C | 21.1 ° C | % 74 | 25.2 km/h | 0% |
| 02 April 2026 Thu | Patchy rain nearby |
1.2 ° C | 18.7 ° C | 8.8 ° C | % 86 | 26.3 km/h | 83% |
| 03 April 2026 Fri | Patchy rain nearby |
1.3 ° C | 10.9 ° C | 7.8 ° C | % 80 | 22.3 km/h | 0% |
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