Harrison Weather Forecast
- 65
- 82
Partly Sunny
- 72
- 84
Partly Sunny
- 74
- 93
Mostly Sunny
- 71
- 93
Chance Thunderstorms
- 68
- 88
Chance Thunderstorms
- 68
- 87
Chance Thunderstorms
Today 21 Jul Winnebago
Partly cloudy. Highs in the lower 80s. East Winds 5 to 10 Mph.
Tonight 21 Jul Winnebago
Mostly clear early in the Evening, then becoming partly cloudy. Lows in the mid 60s. Southeast Winds 5 to 10 Mph.
Harrison Temperature Statistics
July Temperature
Janesville-Rock County (14.9 miles)
Lowest 18 July, 2025
50 °FAverage July
70.5 °FHighest 3 July, 2025
89.6 °F
Climate (2020–Present)
Janesville-Rock County (14.9 miles)
Average Low 2020–2025
40.5 °FAverage 2020–2025
48.8 °FAverage High 2020–2025
60.3 °F