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
| 05 May 2026 Tue 16.7 ° C ( 62.1°F )  Moderate or heavy rain with thunder |
Feels Like : 16.7 ° C / 62.1°F Humidity : % 73 Pressure : 1006 mb Wind Speed : 17.3 kmph / 10.7 miles from SSW 
Visibility : 16 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15-day weather forecast for Alton Airport, Alton, United States
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 05 May 2026 Tue |  Heavy rain |
8.1 ° C | 12.8 ° C | 12.2 ° C | % 82 | 19.4 km/h | 90% |
| 06 May 2026 Wed |  Moderate rain |
8.4 ° C | 13.3 ° C | 9.8 ° C | % 82 | 20.5 km/h | 88% |
| 07 May 2026 Thu |  Sunny |
4.9 ° C | 16.8 ° C | 11 ° C | % 69 | 14.8 km/h | 0% |
| 08 May 2026 Fri |  Patchy rain nearby |
7.6 ° C | 23.1 ° C | 14.2 ° C | % 74 | 28.8 km/h | 87% |
| 09 May 2026 Sat | Sunny |
9 ° C | 22 ° C | 14.3 ° C | % 78 | 16.6 km/h | 0% |
| 10 May 2026 Sun | Patchy rain nearby |
11.3 ° C | 17.9 ° C | 15.2 ° C | % 83 | 19.4 km/h | 88% |
| 11 May 2026 Mon | Sunny |
7.4 ° C | 18.5 ° C | 13 ° C | % 64 | 13.3 km/h | 0% |
| 12 May 2026 Tue |  Partly Cloudy |
10 ° C | 24 ° C | 16.5 ° C | % 64 | 23.4 km/h | 0% |
| 13 May 2026 Wed | Partly Cloudy |
13.7 ° C | 27.8 ° C | 20.7 ° C | % 65 | 29.5 km/h | 0% |
| 14 May 2026 Thu | Sunny |
18 ° C | 28.5 ° C | 22.9 ° C | % 67 | 11.5 km/h | 0% |
| 15 May 2026 Fri | Sunny |
18.4 ° C | 31.2 ° C | 24.6 ° C | % 72 | 25.6 km/h | 0% |
| 16 May 2026 Sat | Moderate rain |
12.4 ° C | 23.2 ° C | 19 ° C | % 90 | 29.5 km/h | 87% |
| 17 May 2026 Sun | Moderate rain |
9.7 ° C | 12.7 ° C | 11.9 ° C | % 88 | 28.8 km/h | 89% |
| 18 May 2026 Mon | Sunny |
7.2 ° C | 16.7 ° C | 11.9 ° C | % 69 | 23 km/h | 0% |
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