Grand Lake Weather Forecast

    • 77
    • 91

    Chance Thunderstorms

    • 79
    • 92

    Slight Chance Thunderstorms

    • 79
    • 94

    Partly Sunny

    • 76
    • 95

    Partly Sunny

    • 75
    • 95

    Partly Sunny

    • 76
    • 95

    Partly Sunny

    • 77
    • 94

    Partly Sunny

Today 20 Jun Montgomery

Mostly cloudy with a chance of Showers and Thunderstorms. Near steady temperature in the upper 80s. Southeast Winds around 5 Mph. Chance of rain 50 percent.

Tonight 20 Jun Montgomery

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Lake Temperature Statistics

June Temperature

Conroe, Montgomery County Airport (6.8 miles)

  • Lowest 1 June, 2026

    70.6 °F

  • Average June

    82.4 °F

  • Highest 18 June, 2026

    95 °F

Climate (2021–2026)

Conroe, Montgomery County Airport (6.8 miles)

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  • Average Low 2021–2026

    58.8 °F

  • Average 2021–2026

    69.8 °F

  • Average High 2021–2026

    81.4 °F
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