Grand Lake Weather Forecast

    • 40
    • 54

    Becoming Sunny

    • 48
    • 57

    Increasing Clouds

    • 40
    • 64

    Partly Sunny

    • 36
    • 49

    Sunny

    • 43
    • 61

    Mostly Sunny

    • 38
    • 57

    Mostly Sunny

    • 34
    • 55

    Mostly Sunny

Today 12 Jan Lower St. Martin

Partly sunny. Highs in the mid 50s. Northeast Winds 5 to 10 Mph.

Tonight 12 Jan Lower St. Martin

Mostly clear this Evening, then becoming partly cloudy. Lows in the upper 30s. Northeast Winds around 5 Mph this Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Lake Temperature Statistics

January Temperature

Patterson Memorial (16.2 miles)

  • Lowest 1 January, 2026

    37.9 °F

  • Average January

    65.5 °F

  • Highest 9 January, 2026

    80.1 °F

Climate (2021–Present)

Patterson Memorial (16.2 miles)

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  • Average Low 2021–2026

    60.5 °F

  • Average 2021–2026

    68.2 °F

  • Average High 2021–2026

    77.1 °F
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