Grand Lake Weather Forecast

    • 77
    • 102

    Hot

    • 76
    • 101

    Slight Chance Thunderstorms

    • 76
    • 100

    Slight Chance Thunderstorms

    • 76
    • 102

    Hot

    • 75
    • 103

    Hot

    • 74
    • 100

    Hot

Today 8 Sep Stephens

Sunny, hot with Highs around 102. South Winds around 5 Mph. Heat index Values up to 105.

Tonight 8 Sep Stephens

Mostly clear. Lows in the upper 70s. South Winds around 5 Mph.

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Grand Lake Temperature Statistics

September Temperature

Stephens County Airport (3.1 miles)

  • Lowest 5 September, 2026

    73.9 °F

  • Average September

    89.3 °F

  • Highest 3 September, 2026

    105.6 °F

Climate (2021–2026)

Stephens County Airport (3.1 miles)

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  • Average Low 2021–2026

    57 °F

  • Average 2021–2026

    68.9 °F

  • Average High 2021–2026

    81.2 °F
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