Grantsburg Weather Forecast

    • 73
    • 88

    Chance Thunderstorms

    • 73
    • 92

    Chance Thunderstorms

    • 71
    • 91

    Rain Showers Likely

    • 74
    • 92

    Mostly Sunny

    • 70
    • 95

    Mostly Sunny

    • 62
    • 86

    Mostly Sunny

    • 65
    • 82

    Mostly Sunny

Today 17 Jul Johnson

Mostly sunny with a chance of Showers and Thunderstorms. Near steady temperature in the upper 80s. West Winds around 5 Mph. Chance of rain 40 percent.

Tonight 17 Jul Johnson

Mostly clear. A chance of Showers and Thunderstorms this evening. Lows in the lower 70s. Southwest Winds around 5 Mph. Chance of rain 40 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Grantsburg Temperature Statistics

July Temperature

Metropolis Municipal Airport (14.3 miles)

  • Lowest 9 July, 2026

    67.1 °F

  • Average July

    77.7 °F

  • Highest 3 July, 2026

    94.1 °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