Olsons Bay Weather Forecast

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    Chance Rain Showers

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    Rain Showers

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    • 83

    Chance Rain Showers

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    • 77

    Mostly Cloudy

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    Chance Rain Showers

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    Chance Rain Showers

Today 10 Aug Jefferson

Partly sunny. Patchy fog in the morning. Highs in the lower 80s. Northeast Winds up to 5 Mph.

Tonight 10 Aug Jefferson

Mostly cloudy. Patchy fog early in the morning. Lows in the mid 60s. North Winds up to 5 Mph.

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Olsons Bay Temperature Statistics

August Temperature

Janesville-Rock County (17.4 miles)

  • Lowest 3 August, 2026

    53.6 °F

  • Average August

    68.5 °F

  • Highest 4 August, 2026

    84.2 °F

Climate (2021–2026)

Janesville-Rock County (17.4 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.3 °F
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