Island Lake Weather Forecast

    • 75
    • 93

    Becoming Sunny

    • 75
    • 95

    Sunny

    • 72
    • 94

    Chance Thunderstorms

    • 69
    • 91

    Rain Showers Likely

    • 67
    • 87

    Chance Thunderstorms

    • 65
    • 86

    Chance Thunderstorms

Today 30 Jun Branch

Mostly sunny. Hot. Near steady temperature in the lower 90s. Southwest Winds around 15 Mph with Gusts up to 25 Mph. Heat index Values up to 103.

Tonight 30 Jun Branch

Clear with Lows in the mid 70s. Southwest Winds 10 to 15 Mph, Diminishing to around 5 Mph after midnight. Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Island Lake Temperature Statistics

June Temperature

Branch County Memorial Airport (3.7 miles)

  • Lowest 15 June, 2026

    46.4 °F

  • Average June

    67.7 °F

  • Highest 10 June, 2026

    87.8 °F

Climate (2021–2026)

Branch County Memorial Airport (3.7 miles)

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  • Average Low 2021–2026

    41.3 °F

  • Average 2021–2026

    50.5 °F

  • Average High 2021–2026

    59.6 °F
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