Grant Lake Weather Forecast

    • 71
    • 88

    Rain Showers Likely

    • 69
    • 85

    Rain Showers

    • 68
    • 82

    Thunderstorms Likely

    • 69
    • 85

    Rain Showers Likely

    • 72
    • 87

    Rain Showers Likely

    • 71
    • 85

    Rain Showers Likely

Today 22 May Montgomery

Partly sunny with a chance of Showers and Thunderstorms. Highs in the upper 80s. Southwest Winds around 5 Mph. Chance of rain 50 percent.

Tonight 22 May Montgomery

Mostly cloudy with a slight chance of Showers and Thunderstorms. Near steady temperature in the upper 60s. Light and variable Winds. Chance of rain 20 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

    74.3 °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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