Marathon Lake Weather Forecast

    • 27
    • 45

    Sunny

    • 34
    • 62

    Mostly Sunny

    • 23
    • 50

    Partly Sunny

    • 23
    • 40

    Mostly Sunny

    • 23
    • 52

    Partly Sunny

    • 26
    • 47

    Partly Sunny

Today 15 Jan Smith

Widespread frost in the morning. Sunny. Highs in the mid 40s. Northwest Winds 5 to 10 Mph.

Tonight 15 Jan Smith

Mostly clear. Much Colder with Lows in the upper 20s. North Winds 5 to 10 Mph with Gusts up to 25 Mph.

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Marathon Lake Temperature Statistics

January Temperature

Meridian, Key Field (36.7 miles)

  • Lowest 13 January, 2026

    28 °F

  • Average January

    55 °F

  • Highest 8 January, 2026

    75.9 °F

Climate (2021–Present)

Meridian, Key Field (36.7 miles)

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  • Average Low 2021–2026

    55.3 °F

  • Average 2021–2026

    66 °F

  • Average High 2021–2026

    78.2 °F
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