Lewisville Weather Forecast

    • 56
    • 81

    Becoming Sunny

    • 52
    • 82

    Sunny

    • 64
    • 83

    Partly Sunny

    • 67
    • 83

    Chance Thunderstorms

    • 64
    • 86

    Slight Chance Thunderstorms

    • 60
    • 84

    Partly Sunny

Today 26 Aug Watonwan

Sunny. Highs around 80. Northwest Winds 5 to 15 Mph increasing to 15 to 20 Mph in the afternoon.

Tonight 26 Aug Watonwan

Clear. Lows in the mid 50s. Northwest Winds up to 10 Mph.

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Lewisville Temperature Statistics

August Temperature

St. James Municipal Airport (6.8 miles)

  • Lowest 23 August, 2026

    46.4 °F

  • Average August

    69.7 °F

  • Highest 9 August, 2026

    84.2 °F

Climate (2021–2026)

St. James Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    36.8 °F

  • Average 2021–2026

    46.9 °F

  • Average High 2021–2026

    57.1 °F
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