Roscoe Weather Forecast
- 66
- 79
Chance Rain Showers
- 45
- 75
Chance Rain Showers
- 40
- 62
Partly Sunny
- 44
- 62
Chance Rain Showers
- 48
- 63
Slight Chance Thunderstorms
- 52
- 72
Partly Sunny
- 55
- 78
Slight Chance Thunderstorms
Today 18 May Winnebago
Cloudy. A chance of Showers and Thunderstorms late in the morning. Breezy. Near steady temperature in the upper 70s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of precipitation 50 percent.
Tonight 18 May Winnebago
Mostly cloudy. A slight chance of Showers late in the evening. A chance of Showers and a slight chance of Thunderstorms after midnight. Lows in the mid 60s. South Winds 10 to 15 Mph, increasing to 15 to 20 Mph with Gusts up to 25 Mph after midnight. Chance of precipitation 40 percent.
Roscoe Temperature Statistics
May Temperature
Janesville-Rock County (14.3 miles)
Lowest 2 May, 2026
30.2 °FAverage May
51.1 °FHighest 16 May, 2026
82.4 °F
Climate (2021–Present)
Janesville-Rock County (14.3 miles)
Average Low 2021–2026
40.4 °FAverage 2021–2026
48.8 °FAverage High 2021–2026
60.4 °F