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
| 11 January 2026 Sun 3.2 ° C ( 37.8°F )  Sunny |
Feels Like : -0.8 ° C / 30.5°F Humidity : % 44 Pressure : 1033 mb Wind Speed : 17.3 kmph / 10.7 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 |
|---|---|---|---|---|---|---|---|
| 11 January 2026 Sun | Sunny |
-5.2 ° C | 5.6 ° C | -0.5 ° C | % 59 | 27.7 km/h | 0% |
| 12 January 2026 Mon | Sunny |
-1.9 ° C | 9.4 ° C | 2.9 ° C | % 62 | 20.5 km/h | 0% |
| 13 January 2026 Tue | Sunny |
0.7 ° C | 14.3 ° C | 7.3 ° C | % 67 | 28.4 km/h | 0% |
| 14 January 2026 Wed |  Patchy rain nearby |
-5.3 ° C | 7.8 ° C | 2.4 ° C | % 66 | 40.3 km/h | 71% |
| 15 January 2026 Thu | Sunny |
-7.5 ° C | -1.1 ° C | -5.4 ° C | % 50 | 31.3 km/h | 0% |
| 16 January 2026 Fri |  Partly Cloudy |
-3.8 ° C | 5.9 ° C | 0.4 ° C | % 51 | 19.1 km/h | 0% |
| 17 January 2026 Sat | Partly Cloudy |
-1.3 ° C | 4 ° C | 0.8 ° C | % 65 | 26.6 km/h | 0% |
| 18 January 2026 Sun | Sunny |
-2.4 ° C | 9.2 ° C | 2.4 ° C | % 54 | 27.7 km/h | 0% |
| 19 January 2026 Mon | Sunny |
-1 ° C | 7.7 ° C | 2.5 ° C | % 63 | 20.2 km/h | 0% |
| 20 January 2026 Tue | Partly Cloudy |
-5.4 ° C | -1.5 ° C | -3.3 ° C | % 51 | 23.8 km/h | 0% |
| 21 January 2026 Wed | Sunny |
-7.8 ° C | 2.3 ° C | -3.8 ° C | % 37 | 13.3 km/h | 0% |
| 22 January 2026 Thu |  Light sleet |
-3.5 ° C | 0.6 ° C | -0.5 ° C | % 76 | 11.5 km/h | 80% |
| 23 January 2026 Fri |  Fog |
0.8 ° C | 10.2 ° C | 4.4 ° C | % 93 | 17.6 km/h | 0% |
| 24 January 2026 Sat | Fog |
-0.4 ° C | 9.1 ° C | 5.7 ° C | % 71 | 30.6 km/h | 0% |
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