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
| 15 May 2026 Fri 21.2 ° C ( 70.2°F )  Sunny |
Feels Like : 21.2 ° C / 70.2°F Humidity : % 33 Pressure : 1015 mb Wind Speed : 15.1 kmph / 9.4 miles from SE 
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 |
|---|---|---|---|---|---|---|---|
| 14 May 2026 Thu | Sunny |
7.4 ° C | 26.1 ° C | 17.4 ° C | % 44 | 18.7 km/h | 0% |
| 15 May 2026 Fri |  Patchy rain nearby |
12.3 ° C | 27.5 ° C | 19.4 ° C | % 64 | 28.8 km/h | 92% |
| 16 May 2026 Sat | Patchy rain nearby |
18.7 ° C | 23.9 ° C | 20.9 ° C | % 86 | 24.5 km/h | 88% |
| 17 May 2026 Sun | Sunny |
18.5 ° C | 28.7 ° C | 23.1 ° C | % 72 | 31 km/h | 0% |
| 18 May 2026 Mon |  Thundery outbreaks in nearby |
20.4 ° C | 30.2 ° C | 24.5 ° C | % 71 | 34.2 km/h | 0% |
| 19 May 2026 Tue |  Moderate rain |
15.7 ° C | 20.8 ° C | 21.1 ° C | % 78 | 31.7 km/h | 88% |
| 20 May 2026 Wed | Sunny |
11.8 ° C | 20.9 ° C | 15.8 ° C | % 66 | 13 km/h | 0% |
| 21 May 2026 Thu | Patchy rain nearby |
10.5 ° C | 18.3 ° C | 13.2 ° C | % 82 | 15.8 km/h | 82% |
| 22 May 2026 Fri | Sunny |
8 ° C | 19.7 ° C | 14 ° C | % 74 | 14.4 km/h | 0% |
| 23 May 2026 Sat | Sunny |
9.8 ° C | 23.5 ° C | 16.4 ° C | % 69 | 22.3 km/h | 0% |
| 24 May 2026 Sun | Patchy rain nearby |
14.6 ° C | 27.2 ° C | 20.7 ° C | % 73 | 23.8 km/h | 77% |
| 25 May 2026 Mon | Patchy rain nearby |
19.1 ° C | 23.9 ° C | 21.7 ° C | % 87 | 27.4 km/h | 89% |
| 26 May 2026 Tue | Patchy rain nearby |
19.5 ° C | 25.6 ° C | 21.9 ° C | % 88 | 20.9 km/h | 75% |
| 27 May 2026 Wed | Patchy rain nearby |
18 ° C | 29 ° C | 22.1 ° C | % 82 | 14.4 km/h | 83% |
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