Grand Lake Weather Forecast

    • 75
    • 88

    Mostly Sunny

    • 75
    • 88

    Chance Thunderstorms

    • 77
    • 89

    Slight Chance Thunderstorms

    • 77
    • 88

    Chance Thunderstorms

    • 77
    • 86

    Rain Showers Likely

    • 75
    • 85

    Rain Showers Likely

Today 11 Jun Lower St. Martin

Mostly sunny. A slight chance of Showers and Thunderstorms in the afternoon. Humid with Highs around 90. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 11 Jun Lower St. Martin

Mostly clear in the Evening, then becoming partly cloudy. Humid with Lows in the mid 70s. Southeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Lake Temperature Statistics

June Temperature

Patterson Memorial (16.2 miles)

  • Lowest 5 June, 2026

    71.1 °F

  • Average June

    79.3 °F

  • Highest 7 June, 2026

    88 °F

Climate (2021–Present)

Patterson Memorial (16.2 miles)

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  • Average Low 2021–2026

    60.6 °F

  • Average 2021–2026

    68.4 °F

  • Average High 2021–2026

    77.4 °F
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