Gilbert Bay Weather Forecast

    • 69
    • 84

    Rain Showers Likely

    • 54
    • 80

    Patchy Smoke

    • 54
    • 75

    Mostly Sunny

    • 57
    • 79

    Partly Sunny

    • 59
    • 80

    Mostly Sunny

    • 64
    • 84

    Partly Sunny

    • 67
    • 90

    Partly Sunny

Today 20 Jul Jefferson

Mostly sunny. Southwest Winds around 15 Mph.

Tonight 20 Jul Jefferson

Mostly cloudy with Showers likely and chance of Thunderstorms in the Evening, then partly cloudy with chance of light Showers and Thunderstorms late in the evening. Partly cloudy after midnight. Some Thunderstorms may be severe. Lows in the upper 60s. West Winds 10 to 15 Mph with Gusts to around 30 Mph. Chance of precipitation 70 percent.

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Gilbert Bay Temperature Statistics

July Temperature

Janesville-Rock County (18.6 miles)

  • Lowest 12 July, 2026

    53.6 °F

  • Average July

    75.1 °F

  • Highest 14 July, 2026

    95 °F

Climate (2021–2026)

Janesville-Rock County (18.6 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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