Lostmans River - Onion Key Weather Forecast

    • 63
    • 82

    Becoming Sunny

    • 64
    • 81

    Mostly Sunny

    • 65
    • 82

    Partly Sunny

    • 66
    • 82

    Mostly Cloudy

    • 66
    • 83

    Partly Sunny

    • 66
    • 84

    Partly Sunny

Today 30 Jan Mainland Monroe

Patchy fog this morning. Sunny. Highs in the lower 80s. East Winds 5 to 10 Mph.

Tonight 30 Jan Mainland Monroe

Mostly clear. Patchy fog after midnight. Lows in the lower 60s. East Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lostmans River - Onion Key Temperature Statistics

January Temperature

Miami, Kendall-Tamiami Executive Airport (43.5 miles)

  • Lowest 10 January, 2025

    45.6 °F

  • Average January

    65.7 °F

  • Highest 19 January, 2025

    85.6 °F

Climate (2020–Present)

Miami, Kendall-Tamiami Executive Airport (43.5 miles)

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  • Average Low 2020–2025

    70 °F

  • Average 2020–2025

    77.6 °F

  • Average High 2020–2025

    85.9 °F
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