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
| 22 February 2026 Sun -3.3 ° C ( 26.1°F )  Clear |
Feels Like : -10.1 ° C / 13.8°F Humidity : % 57 Pressure : 1028 mb Wind Speed : 24.8 kmph / 15.4 miles from NW 
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 |
|---|---|---|---|---|---|---|---|
| 22 February 2026 Sun | Sunny |
-7.3 ° C | 1.3 ° C | -3.6 ° C | % 49 | 34.2 km/h | 0% |
| 23 February 2026 Mon | Sunny |
-7.7 ° C | 1.5 ° C | -3.8 ° C | % 48 | 25.9 km/h | 0% |
| 24 February 2026 Tue |  Overcast |
-5 ° C | 7.3 ° C | 0.3 ° C | % 54 | 27.7 km/h | 0% |
| 25 February 2026 Wed | Sunny |
2 ° C | 11.1 ° C | 7.6 ° C | % 63 | 26.3 km/h | 0% |
| 26 February 2026 Thu |  Patchy rain nearby |
-2.5 ° C | 10.2 ° C | 4.2 ° C | % 79 | 33.5 km/h | 82% |
| 27 February 2026 Fri | Sunny |
-5.3 ° C | 8.7 ° C | 1.1 ° C | % 85 | 19.1 km/h | 0% |
| 28 February 2026 Sat | Sunny |
3.1 ° C | 18.9 ° C | 8.9 ° C | % 65 | 31 km/h | 0% |
| 01 March 2026 Sun | Sunny |
-1.9 ° C | 4.2 ° C | 1.1 ° C | % 37 | 23.8 km/h | 0% |
| 02 March 2026 Mon |  Light freezing rain |
-1 ° C | 0.5 ° C | -0.2 ° C | % 61 | 20.5 km/h | 64% |
| 03 March 2026 Tue | Patchy rain nearby |
2.1 ° C | 14.9 ° C | 8 ° C | % 90 | 30.6 km/h | 86% |
| 04 March 2026 Wed |  Partly Cloudy |
0.9 ° C | 8.4 ° C | 4 ° C | % 70 | 24.8 km/h | 0% |
| 05 March 2026 Thu | Partly Cloudy |
3.1 ° C | 12.8 ° C | 7.4 ° C | % 61 | 18 km/h | 0% |
| 06 March 2026 Fri |  Moderate rain |
7.8 ° C | 15.7 ° C | 12.1 ° C | % 87 | 30.6 km/h | 82% |
| 07 March 2026 Sat | Sunny |
11.9 ° C | 20.6 ° C | 15.2 ° C | % 68 | 32 km/h | 0% |
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