Grant Lake Weather Forecast

    • 74
    • 95

    Chance Thunderstorms

    • 73
    • 95

    Mostly Cloudy

    • 72
    • 96

    Mostly Sunny

    • 73
    • 99

    Hot

    • 75
    • 99

    Hot

    • 76
    • 100

    Hot

Today 17 Jul Montgomery

Partly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the mid 90s. South Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 106.

Tonight 17 Jul Montgomery

Mostly cloudy. Near steady temperature in the mid 70s. Southeast Winds around 5 Mph.

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Grant Lake Temperature Statistics

July Temperature

Conroe, Montgomery County Airport (10.6 miles)

  • Lowest 8 July, 2026

    69.7 °F

  • Average July

    83 °F

  • Highest 6 July, 2026

    97.6 °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

    81.5 °F
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