Grand Lake Weather Forecast

    • 73
    • 97

    Hot

    • 73
    • 98

    Hot

    • 76
    • 97

    Hot

    • 75
    • 95

    Chance Thunderstorms

    • 75
    • 90

    Chance Thunderstorms

    • 75
    • 94

    Chance Thunderstorms

Today 22 Jul Montgomery

Mostly sunny. Hot with Highs in the mid 90s. South Winds 5 to 10 Mph. Heat index Values up to 105.

Tonight 22 Jul Montgomery

Mostly clear. Lows in the mid 70s. Southeast Winds 5 to 10 Mph, becoming southwest after midnight.

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Grand Lake Temperature Statistics

July Temperature

Conroe, Montgomery County Airport (6.8 miles)

  • Lowest 3 July, 2025

    70.6 °F

  • Average July

    83 °F

  • Highest 1 July, 2025

    96.7 °F

Climate (2020–Present)

Conroe, Montgomery County Airport (6.8 miles)

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  • Average Low 2020–2025

    58.2 °F

  • Average 2020–2025

    69.1 °F

  • Average High 2020–2025

    80.7 °F
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