Olsons Bay Weather Forecast

    • 17
    • 21

    Mostly Cloudy

    • 31
    • 41

    Mostly Cloudy

    • 32
    • 45

    Mostly Cloudy

Today 17 Mar Jefferson

Sunny in the morning then becoming partly sunny. Highs in the lower 20s. West Winds 5 to 10 Mph.

Tonight 17 Mar Jefferson

Colder. Partly cloudy. Lows around 1. Northwest Winds 10 to 15 Mph.

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Olsons Bay Temperature Statistics

March Temperature

Janesville-Rock County (17.4 miles)

  • Lowest 1 March, 2026

    10.4 °F

  • Average March

    38.3 °F

  • Highest 9 March, 2026

    71.6 °F

Climate (2021–Present)

Janesville-Rock County (17.4 miles)

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  • Average Low 2021–2026

    40.5 °F

  • Average 2021–2026

    48.8 °F

  • Average High 2021–2026

    60.4 °F
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