Grant Lake Weather Forecast

    • 75
    • 98

    Slight Chance Thunderstorms

    • 75
    • 97

    Chance Thunderstorms

    • 73
    • 98

    Hot

    • 74
    • 99

    Hot

    • 75
    • 99

    Hot

    • 74
    • 99

    Hot

Today 13 Aug Montgomery

Sunny. A slight chance of Showers and Thunderstorms this afternoon. Hot with Highs in the upper 90s. South Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent. Heat index Values up to 108.

Tonight 13 Aug Montgomery

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 70s. South Winds 10 to 15 Mph, Diminishing to around 5 Mph after midnight. Heat index Values up to 105 early in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grant Lake Temperature Statistics

August Temperature

Conroe, Montgomery County Airport (10.6 miles)

  • Lowest 3 August, 2026

    69.7 °F

  • Average August

    84.7 °F

  • Highest 4 August, 2026

    99.6 °F

Climate (2021–2026)

Conroe, Montgomery County Airport (10.6 miles)

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  • Average Low 2021–2026

    58.8 °F

  • Average 2021–2026

    69.9 °F

  • Average High 2021–2026

    81.6 °F
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