Olsons Bay Weather Forecast

    • 35
    • 44

    Rain Showers

    • 37
    • 67

    Rain Showers

    • 31
    • 54

    Partly Sunny

    • 36
    • 54

    Chance Rain

    • 32
    • 53

    Slight Chance Rain/Snow

    • 25
    • 47

    Partly Sunny

Today 1 Apr Jefferson

Mostly sunny until late Afternoon, then cloudy with chance of light Snow, possibly mixed with rain and late in the afternoon. Highs in the lower 40s. Southeast Winds 5 to 15 Mph. Chance of precipitation 50 percent.

Tonight 1 Apr Jefferson

Not as cold. Light Snow, possibly mixed with rain through around Midnight, then rain Showers and slight chance of Thunderstorms after midnight. Little snow accumulation. Lows in the mid 30s. Southeast Winds 15 to 20 Mph. Gusts up to 40 Mph after midnight. Chance of precipitation near 100 percent.

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Olsons Bay Temperature Statistics

April Temperature

Janesville-Rock County (17.4 miles)

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Climate (2020–Present)

Janesville-Rock County (17.4 miles)

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  • Average Low 2020–2025

    40.6 °F

  • Average 2020–2025

    48.8 °F

  • Average High 2020–2025

    60.3 °F
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