Grant Lake Weather Forecast

    • 73
    • 90

    Chance Thunderstorms

    • 73
    • 95

    Chance Thunderstorms

    • 73
    • 95

    Chance Thunderstorms

    • 74
    • 95

    Chance Thunderstorms

    • 74
    • 95

    Chance Thunderstorms

    • 73
    • 94

    Chance Thunderstorms

Today 3 Sep Montgomery

Cloudy with a chance of Showers and Thunderstorms. Highs in the upper 80s. South Winds around 5 Mph, becoming east this afternoon. Chance of rain 50 percent.

Tonight 3 Sep Montgomery

Mostly cloudy with a slight chance of Showers and Thunderstorms. Humid with Lows in the mid 70s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grant Lake Temperature Statistics

September Temperature

Conroe, Montgomery County Airport (10.6 miles)

  • Lowest 1 September, 2026

    73.9 °F

  • Average September

    80.5 °F

  • Highest 1 September, 2026

    93 °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

    81.7 °F
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