Grantsburg Weather Forecast

    • 62
    • 82

    Mostly Cloudy

    • 67
    • 84

    Rain Showers Likely

    • 72
    • 88

    Chance Thunderstorms

    • 73
    • 94

    Mostly Sunny

    • 77
    • 97

    Hot

    • 74
    • 97

    Hot

    • 71
    • 92

    Partly Sunny

Today 23 Jul Johnson

Mostly sunny. Near steady temperature in the upper 70s. Northeast Winds around 5 Mph.

Tonight 23 Jul Johnson

Partly cloudy this Evening, then becoming mostly cloudy. Lows in the lower 60s. Northeast Winds around 5 Mph this Evening, becoming light and variable.

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  • 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

    78.7 °F

  • Highest 21 July, 2026

    94.5 °F

Climate (2021–2026)

Metropolis Municipal Airport (14.3 miles)

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  • Average Low 2021–2026

    49.5 °F

  • Average 2021–2026

    59.7 °F

  • Average High 2021–2026

    70.1 °F
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