Appleton Weather Forecast
- 59
- 90
Mostly Sunny
- 62
- 92
Partly Sunny
- 61
- 83
Chance Thunderstorms
- 63
- 85
Chance Rain Showers
- 62
- 84
Chance Rain Showers
- 59
- 83
Chance Rain Showers
Today 17 Sep Knox
Sunny. Highs in the upper 80s. East Winds around 5 Mph.
Tonight 17 Sep Knox
Mostly clear. Lows in the upper 50s. East Winds around 5 Mph.
Appleton Temperature Statistics
September Temperature
Galesburg Municipal Airport (13.7 miles)
Lowest 7 September, 2025
39.6 °FAverage September
64.4 °FHighest 14 September, 2025
95.2 °F
Climate (2020–Present)
Galesburg Municipal Airport (13.7 miles)
Average Low 2020–2025
41.2 °FAverage 2020–2025
51.3 °FAverage High 2020–2025
61.5 °F