Grand Lake Weather Forecast

    • 75
    • 96

    Mostly Cloudy

    • 71
    • 94

    Thunderstorms

    • 64
    • 83

    Thunderstorms

    • 61
    • 76

    Chance Rain Showers

    • 62
    • 76

    Chance Rain Showers

    • 61
    • 78

    Slight Chance Rain Showers

Today 29 Sep Stephens

Sunny. Highs in the lower 80s.

Tonight 29 Sep Stephens

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the mid 70s. Southeast Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Lake Temperature Statistics

September Temperature

Stephens County Airport (3.1 miles)

  • Lowest 22 September, 2026

    70.3 °F

  • Average September

    87.6 °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

    57.2 °F

  • Average 2021–2026

    69.1 °F

  • Average High 2021–2026

    81.4 °F
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