Deacon Thomas Lake Weather Forecast

    • 51
    • 68

    Mostly Cloudy

    • 46
    • 63

    Slight Chance Rain Showers

    • 43
    • 63

    Partly Sunny

    • 44
    • 66

    Partly Sunny

    • 47
    • 67

    Mostly Cloudy

    • 48
    • 71

    Partly Sunny

Today 20 Sep Sauk

Mostly cloudy. Patchy fog in the morning. Highs in the upper 60s. Northeast Winds 10 to 15 Mph.

Tonight 20 Sep Sauk

Mostly cloudy. Lows in the upper 40s. Northeast Winds 10 to 15 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 14 September, 2026

    42.7 °F

  • Average September

    69.6 °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

    38.7 °F

  • Average 2021–2026

    49.6 °F

  • Average High 2021–2026

    60.4 °F
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