Deacon Thomas Lake Weather Forecast

    • 50
    • 75

    Increasing Clouds

    • 60
    • 74

    Mostly Cloudy

    • 61
    • 72

    Rain Showers

    • 47
    • 69

    Chance Rain Showers

    • 43
    • 65

    Slight Chance Rain Showers

    • 46
    • 65

    Partly Sunny

Today 28 Sep Sauk

Partly sunny until late afternoon then clearing. Patchy fog in the morning. Highs in the mid 70s. Calm Winds becoming east up to 5 Mph in the afternoon.

Tonight 28 Sep Sauk

Partly cloudy. Lows in the lower 50s. Calm Winds becoming south up to 5 Mph after midnight.

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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

    66.4 °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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