Hanover Weather Forecast

    • 60
    • 88

    Chance Thunderstorms

    • 52
    • 82

    Slight Chance Thunderstorms

    • 45
    • 66

    Partly Sunny

    • 41
    • 67

    Partly Sunny

    • 48
    • 67

    Rain Showers

    • 51
    • 66

    Rain Showers

Today 15 May Rock

Partly sunny. A 50 percent chance of light Showers and Thunderstorms in the afternoon. Highs in the upper 80s. Southeast Winds 10 to 20 Mph.

Tonight 15 May Rock

Mostly clear. Lows around 60. Southwest Winds 10 to 15 Mph. Gusts up to 30 Mph through around midnight.

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Hanover Temperature Statistics

May Temperature

Janesville-Rock County (6.2 miles)

  • Lowest 9 May, 2025

    32 °F

  • Average May

    52.4 °F

  • Highest 12 May, 2025

    84.2 °F

Climate (2020–Present)

Janesville-Rock County (6.2 miles)

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  • Average Low 2020–2025

    40.6 °F

  • Average 2020–2025

    48.9 °F

  • Average High 2020–2025

    60.4 °F
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