Grant Lake Weather Forecast

    • 68
    • 90

    Increasing Clouds

    • 69
    • 91

    Mostly Cloudy

    • 70
    • 93

    Partly Sunny

    • 72
    • 92

    Partly Sunny

    • 73
    • 91

    Chance Thunderstorms

    • 68
    • 88

    Rain Showers Likely

Today 25 Sep Montgomery

Mostly sunny. Highs in the lower 90s. Northeast Winds 5 to 10 Mph.

Tonight 25 Sep Montgomery

Partly cloudy in the Evening, then becoming mostly clear. Lows in the upper 60s. East Winds around 5 Mph in the Evening, becoming light and variable.

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Grant Lake Temperature Statistics

September Temperature

Conroe, Montgomery County Airport (10.6 miles)

  • Lowest 19 September, 2026

    66 °F

  • Average September

    84 °F

  • Highest 8 September, 2026

    98.7 °F

Climate (2021–2026)

Conroe, Montgomery County Airport (10.6 miles)

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  • Average Low 2021–2026

    59 °F

  • Average 2021–2026

    70.1 °F

  • Average High 2021–2026

    81.8 °F
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