Southern Island Weather Forecast

    • 19
    • 24

    Increasing Clouds

    • 30
    • 33

    Breezy

    • 30
    • 42

    Breezy

    • 43
    • 47

    Rain Likely

    • 19
    • 49

    Rain Showers

    • 29
    • 37

    Rain/Snow

Today 15 Dec Knox

Partly sunny. Highs in the lower 20s. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Wind chill Values as low as 4 below.

Tonight 15 Dec Knox

Partly cloudy. Lows around 13. West Winds around 10 Mph with Gusts up to 25 Mph in the Evening, becoming light and variable.

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Southern Island Temperature Statistics

December Temperature

Rockland, Knox County Regional Airport (8.1 miles)

  • Lowest 9 December, 2025

    -2 °F

  • Average December

    25.3 °F

  • Highest 10 December, 2025

    45 °F

Climate (2020–Present)

Rockland, Knox County Regional Airport (8.1 miles)

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  • Average Low 2020–2025

    39.9 °F

  • Average 2020–2025

    47.9 °F

  • Average High 2020–2025

    55.2 °F
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