Deacon Thomas Lake Weather Forecast

    • 61
    • 75

    Increasing Clouds

    • 61
    • 70

    Rain Showers

    • 48
    • 70

    Rain Showers Likely

    • 43
    • 66

    Slight Chance Rain Showers

    • 47
    • 67

    Partly Sunny

    • 40
    • 65

    Mostly Sunny

Today 29 Sep Sauk

Mostly sunny in the morning then becoming mostly cloudy. Highs in the lower 70s. South Winds up to 10 Mph.

Tonight 29 Sep Sauk

Mostly cloudy. Chance of light Showers until early morning. Slight chance of Thunderstorms in the late evening and overnight. Showers likely early in the morning. Lows around 60. South Winds 5 to 10 Mph. Chance of precipitation 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Deacon Thomas Lake Temperature Statistics

September Temperature

Lone Rock Tri-County Regional Airport (16.2 miles)

  • Lowest 23 September, 2026

    40.6 °F

  • Average September

    66.1 °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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