Grant Lake Weather Forecast

    • 77
    • 98

    Hot

    • 78
    • 102

    Hot

    • 75
    • 101

    Chance Thunderstorms

    • 74
    • 98

    Chance Thunderstorms

    • 74
    • 98

    Slight Chance Thunderstorms

    • 73
    • 97

    Slight Chance Thunderstorms

Today 25 Aug Montgomery

Mostly sunny. Hot with Highs in the upper 90s. Southwest Winds 5 to 10 Mph. Heat index Values up to 109 this afternoon.

Tonight 25 Aug Montgomery

Partly cloudy in the Evening, then clearing. Lows in the upper 70s. South Winds 5 to 10 Mph. Heat index Values up to 106 early in the evening.

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Grant Lake Temperature Statistics

August Temperature

Conroe, Montgomery County Airport (10.6 miles)

  • Lowest 3 August, 2026

    69.7 °F

  • Average August

    87 °F

  • Highest 22 August, 2026

    106.6 °F

Climate (2021–2026)

Conroe, Montgomery County Airport (10.6 miles)

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  • Average Low 2021–2026

    58.9 °F

  • Average 2021–2026

    70 °F

  • Average High 2021–2026

    81.6 °F
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