Lake Monona Weather Forecast
- 61
- 85
Partly Sunny
- 61
- 81
Chance Thunderstorms
- 62
- 80
Chance Rain Showers
- 62
- 81
Chance Thunderstorms
- 60
- 80
Chance Rain Showers
- 57
- 77
Partly Sunny
Today 18 Sep Dane
Partly sunny. Highs in the mid 80s. Southeast Winds up to 10 Mph.
Tonight 18 Sep Dane
Partly cloudy. Patchy fog early in the morning. Lows around 60. Southeast Winds up to 5 Mph.
Lake Monona Temperature Statistics
September Temperature
Madison, Dane County Regional-Truax Field (5 miles)
Lowest 8 September, 2025
42.1 °FAverage September
62.6 °FHighest 15 September, 2025
84 °F
Climate (2020–Present)
Madison, Dane County Regional-Truax Field (5 miles)
Average Low 2020–2025
39.9 °FAverage 2020–2025
49.6 °FAverage High 2020–2025
58.7 °F