Deacon Thomas Lake Weather Forecast

    • 73
    • 91

    Slight Chance Thunderstorms

    • 63
    • 89

    Mostly Sunny

    • 67
    • 86

    Partly Sunny

    • 68
    • 89

    Chance Thunderstorms

    • 58
    • 83

    Mostly Sunny

    • 57
    • 79

    Mostly Sunny

Today 17 Jul Sauk

Very warm and humid. Mostly sunny. Areas of smoke in the morning. Slight chance of light Showers early in the afternoon. Slight chance of light Showers and Thunderstorms late in the afternoon. Highs around 90. Southwest Winds up to 10 Mph. Chance of precipitation 20 percent. Highest heat index Readings 95 to 97 in the late morning and afternoon.

Tonight 17 Jul Sauk

Mostly cloudy after midnight then becoming partly cloudy. Smoke after Midnight, then Areas of smoke early in the morning. Near steady temperature in the upper 60s. Southeast Winds up to 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Deacon Thomas Lake Temperature Statistics

July Temperature

Lone Rock Tri-County Regional Airport (16.2 miles)

  • Lowest 11 July, 2026

    58.6 °F

  • Average July

    76.3 °F

  • Highest 14 July, 2026

    93 °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

    49.4 °F

  • Average High 2021–2026

    60.3 °F
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