Deacon Thomas Lake Weather Forecast

    • 56
    • 81

    Decreasing Clouds

    • 61
    • 80

    Partly Sunny

    • 69
    • 85

    Rain Showers

    • 56
    • 83

    Mostly Sunny

    • 54
    • 79

    Mostly Sunny

    • 59
    • 80

    Partly Sunny

Today 6 Sep Sauk

Partly sunny. Areas of fog in the morning. Highs around 80. East Winds up to 10 Mph.

Tonight 6 Sep Sauk

Partly cloudy. Areas of fog through the night. Lows in the upper 50s. East Winds up to 5 Mph.

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  • Temperature Real-Time

Deacon Thomas Lake Temperature Statistics

September Temperature

Lone Rock Tri-County Regional Airport (16.2 miles)

  • Lowest 3 September, 2026

    69.1 °F

  • Average September

    77.8 °F

  • Highest 1 September, 2026

    89.7 °F

Climate (2021–2026)

Lone Rock Tri-County Regional Airport (16.2 miles)

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  • Average Low 2021–2026

    38.6 °F

  • Average 2021–2026

    49.5 °F

  • Average High 2021–2026

    60.4 °F
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