Lake Mills Weather Forecast
- 55
- 66
Slight Chance Rain Showers
- 60
- 77
Rain Showers Likely
- 47
- 72
Rain Showers Likely
- 40
- 59
Mostly Sunny
- 44
- 66
Chance Rain Showers
- 36
- 54
Chance Rain Showers
- 39
- 56
Partly Sunny
Today 16 Oct Jefferson
Partly sunny with a 20 percent chance of light Showers. Southeast Winds around 10 Mph.
Tonight 16 Oct Jefferson
Mostly cloudy then becoming partly cloudy after midnight then becoming mostly cloudy. Lows in the mid 50s. Southeast Winds 5 to 15 Mph.
Lake Mills Temperature Statistics
October Temperature
Watertown (11.2 miles)
Lowest 9 October, 2025
34.9 °FAverage October
59.5 °FHighest 3 October, 2025
86.4 °F
Climate (2020–Present)
Watertown (11.2 miles)
Average Low 2020–2025
35.8 °FAverage 2020–2025
45.5 °FAverage High 2020–2025
54.6 °F