Grantsburg Weather Forecast

    • 66
    • 85

    Chance Thunderstorms

    • 62
    • 81

    Rain Showers

    • 67
    • 87

    Chance Thunderstorms

    • 44
    • 78

    Rain Showers Likely

    • 40
    • 65

    Sunny

    • 46
    • 69

    Mostly Sunny

Today 15 Apr Johnson

Partly sunny. Highs in the mid 80s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 15 Apr Johnson

Partly cloudy in the Evening, then mostly cloudy with Showers likely with a chance of Thunderstorms after midnight. Lows in the mid 60s. South Winds 10 to 15 Mph. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grantsburg Temperature Statistics

April Temperature

Metropolis Municipal Airport (14.3 miles)

  • Lowest 6 April, 2026

    35.1 °F

  • Average April

    64.1 °F

  • Highest 1 April, 2026

    82.9 °F

Climate (2021–Present)

Metropolis Municipal Airport (14.3 miles)

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  • Average Low 2021–2026

    48.8 °F

  • Average 2021–2026

    59 °F

  • Average High 2021–2026

    69.4 °F
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