Grant Lake Weather Forecast

    • 70
    • 83

    Rain Showers

    • 71
    • 82

    Rain Showers

    • 72
    • 86

    Rain Showers

    • 71
    • 84

    Rain Showers Likely

    • 70
    • 82

    Rain Showers Likely

Today 20 May Montgomery

Mostly cloudy. A chance of Showers and Thunderstorms in the Morning, then Thunderstorms likely with a chance of Showers in the afternoon. Highs in the mid 80s. East Winds 5 to 10 Mph, becoming southeast in the afternoon. Chance of rain 50 percent.

Tonight 20 May Montgomery

Mostly cloudy. A chance of Showers and Thunderstorms in the evening. Lows in the lower 70s. East Winds around 5 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grant Lake Temperature Statistics

May Temperature

Conroe, Montgomery County Airport (10.6 miles)

  • Lowest 3 May, 2026

    48.7 °F

  • Average May

    73.6 °F

  • Highest 10 May, 2026

    91.7 °F

Climate (2021–Present)

Conroe, Montgomery County Airport (10.6 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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