Jack Lake Weather Forecast

    • 72
    • 99

    Hot

    • 72
    • 100

    Hot

    • 72
    • 100

    Hot

    • 71
    • 100

    Hot

    • 68
    • 99

    Slight Chance Thunderstorms

    • 65
    • 94

    Mostly Sunny

Today 18 Sep Holmes

Sunny. Highs in the upper 90s. Light and variable Winds, becoming east around 5 Mph this afternoon.

Tonight 18 Sep Holmes

Mostly clear. Lows in the lower 70s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Jack Lake Temperature Statistics

September Temperature

Winona-Montgomery County Airport (31.1 miles)

  • Lowest 10 September, 2026

    68.2 °F

  • Average September

    81.7 °F

  • Highest 5 September, 2026

    99.5 °F

Climate (2021–2026)

Winona-Montgomery County Airport (31.1 miles)

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  • Average Low 2021–2026

    54.4 °F

  • Average 2021–2026

    64.6 °F

  • Average High 2021–2026

    75.9 °F
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