Grand Lake Weather Forecast

    • 70
    • 83

    Rain Showers Likely

    • 69
    • 87

    Chance Thunderstorms

    • 64
    • 87

    Thunderstorms

    • 61
    • 80

    Chance Thunderstorms

    • 62
    • 83

    Slight Chance Thunderstorms

    • 65
    • 85

    Partly Sunny

Today 30 Apr Montgomery

Mostly cloudy this Morning, then becoming partly sunny. A chance of Showers. A slight chance of Thunderstorms this Morning, then a chance of Thunderstorms this afternoon. Highs in the lower 80s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

Tonight 30 Apr Montgomery

Mostly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then Showers likely with a chance of Thunderstorms after midnight. Lows in the upper 60s. South Winds 10 to 15 Mph. Chance of rain 70 percent.

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Grand Lake Temperature Statistics

April Temperature

Conroe, Montgomery County Airport (6.8 miles)

  • Lowest 8 April, 2025

    38.6 °F

  • Average April

    72 °F

  • Highest 18 April, 2025

    90.6 °F

Climate (2020–Present)

Conroe, Montgomery County Airport (6.8 miles)

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  • Average Low 2020–2025

    58.1 °F

  • Average 2020–2025

    68.9 °F

  • Average High 2020–2025

    80.7 °F
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