Northern Island Weather Forecast

    • 58
    • 66

    Chance Rain Showers

    • 49
    • 73

    Chance Rain Showers

    • 45
    • 60

    Mostly Sunny

    • 45
    • 58

    Mostly Cloudy

    • 44
    • 53

    Chance Rain Showers

    • 45
    • 53

    Chance Rain Showers

Today 19 May Knox

Partly sunny. A chance of Showers and Thunderstorms this afternoon. Some Thunderstorms may produce gusty Winds and small hail this afternoon. Warmer with Highs in the mid 80s. Southwest Winds around 10 Mph with Gusts up to 25 Mph. Chance of rain 40 percent.

Tonight 19 May Knox

Partly cloudy. A chance of Showers with a slight chance of Thunderstorms in the evening. Some Thunderstorms may produce gusty Winds and small hail in the evening. Lows in the mid 60s. Southwest Winds around 10 Mph with Gusts up to 20 Mph in the Evening, becoming light and variable. Chance of rain 30 percent.

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Northern Island Temperature Statistics

May Temperature

Rockland, Knox County Regional Airport (8.1 miles)

  • Lowest 4 May, 2026

    32 °F

  • Average May

    50.9 °F

  • Highest 17 May, 2026

    82 °F

Climate (2021–Present)

Rockland, Knox County Regional Airport (8.1 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    54.8 °F
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