Island Lake Weather Forecast

    • 47
    • 68

    Rain Showers

    • 40
    • 54

    Mostly Cloudy

    • 44
    • 64

    Mostly Sunny

    • 56
    • 69

    Slight Chance Rain Showers

    • 57
    • 81

    Chance Rain Showers

    • 64
    • 80

    Rain Showers Likely

    • 64
    • 85

    Rain Showers Likely

Today 12 May Branch

Mostly cloudy. Near steady temperature in the upper 60s. South Winds around 15 Mph with Gusts up to 25 Mph.

Tonight 12 May Branch

Showers with a chance of Thunderstorms. Lows in the upper 40s. Southwest Winds 10 to 15 Mph with Gusts up to 35 Mph. Chance of rain 80 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Island Lake Temperature Statistics

May Temperature

Branch County Memorial Airport (3.7 miles)

  • Lowest 2 May, 2026

    28.4 °F

  • Average May

    49.8 °F

  • Highest 4 May, 2026

    75.2 °F

Climate (2021–Present)

Branch County Memorial Airport (3.7 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    41.4 °F

  • Average 2021–2026

    50.6 °F

  • Average High 2021–2026

    59.7 °F
Get WillyWeather+ to remove ads