Grant Lake Weather Forecast

    • 73
    • 91

    Chance Rain Showers

    • 67
    • 92

    Slight Chance Rain Showers

    • 67
    • 90

    Partly Sunny

    • 61
    • 86

    Partly Sunny

    • 55
    • 77

    Mostly Sunny

    • 61
    • 82

    Partly Sunny

Today 13 Oct Montgomery

Partly sunny in the Morning, then becoming mostly cloudy. A chance of Showers with isolated Thunderstorms. Humid with Highs in the lower 90s. South Winds 5 to 10 Mph. Chance of rain 50 percent. Heat index Values up to 105.

Tonight 13 Oct Montgomery

Mostly cloudy. A chance of Showers in the evening. Humid with Lows in the mid 70s. Southeast Winds 5 to 10 Mph. Chance of rain 50 percent.

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Grant Lake Temperature Statistics

October Temperature

Conroe, Montgomery County Airport (10.6 miles)

  • Lowest 11 October, 2026

    59 °F

  • Average October

    78.8 °F

  • Highest 1 October, 2026

    92.6 °F

Climate (2021–2026)

Conroe, Montgomery County Airport (10.6 miles)

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  • Average Low 2021–2026

    59 °F

  • Average 2021–2026

    70.2 °F

  • Average High 2021–2026

    81.8 °F
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