Grantsburg Weather Forecast

    • 65
    • 88

    Decreasing Clouds

    • 68
    • 89

    Mostly Sunny

    • 69
    • 91

    Rain Showers Likely

    • 65
    • 84

    Chance Thunderstorms

    • 63
    • 86

    Slight Chance Thunderstorms

    • 64
    • 88

    Mostly Sunny

Today 17 Aug Johnson

Mostly sunny. Highs in the upper 80s. Northwest Winds 5 to 10 Mph.

Tonight 17 Aug Johnson

Partly cloudy. Lows in the mid 60s. North Winds 5 to 10 Mph in the Evening, becoming light and variable.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Grantsburg Temperature Statistics

August Temperature

Metropolis Municipal Airport (14.3 miles)

  • Lowest 5 August, 2026

    61.7 °F

  • Average August

    78.6 °F

  • Highest 14 August, 2026

    96.3 °F

Climate (2021–2026)

Metropolis Municipal Airport (14.3 miles)

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

  • Average Low 2021–2026

    49.5 °F

  • Average 2021–2026

    59.7 °F

  • Average High 2021–2026

    70.1 °F
Get WillyWeather+ to remove ads