Wayside Park Weather Forecast

    • 33
    • 54

    Becoming Sunny

    • 36
    • 58

    Rain Showers

    • 44
    • 63

    Slight Chance Rain Showers

    • 46
    • 69

    Chance Rain Showers

    • 39
    • 61

    Partly Sunny

    • 43
    • 61

    Chance Rain Showers

    • 45
    • 64

    Chance Rain Showers

Today 6 May Jefferson

Mostly cloudy. West Winds 5 to 15 Mph.

Tonight 6 May Jefferson

Partly cloudy then becoming clear in the late evening and early morning then becoming partly cloudy. Widespread frost after midnight. Lows in the lower 30s. West Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Wayside Park Temperature Statistics

May Temperature

Janesville-Rock County (18 miles)

  • Lowest 2 May, 2026

    30.2 °F

  • Average May

    49.1 °F

  • Highest 4 May, 2026

    80.6 °F

Climate (2021–Present)

Janesville-Rock County (18 miles)

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  • Average Low 2021–2026

    40.4 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.4 °F
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