Happy Hollow Park Weather Forecast

    • 70
    • 95

    Mostly Sunny

    • 70
    • 96

    Partly Sunny

    • 69
    • 92

    Slight Chance Thunderstorms

    • 71
    • 90

    Chance Rain Showers

    • 65
    • 88

    Chance Rain Showers

    • 62
    • 84

    Slight Chance Thunderstorms

Today 14 Jul Rock

Hot, sunny. Highs in the mid 90s. Northwest Winds up to 5 Mph.

Tonight 14 Jul Rock

Clear. Lows around 70. West Winds up to 5 Mph. Highest heat index Readings 95 to 99 in the evening.

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Happy Hollow Park Temperature Statistics

July Temperature

Janesville-Rock County (1.2 miles)

  • Lowest 7 July, 2026

    55.4 °F

  • Average July

    72.7 °F

  • Highest 1 July, 2026

    91.4 °F

Climate (2021–2026)

Janesville-Rock County (1.2 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.4 °F
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