Dismal Swamp State Wildlife Management Area Weather Forecast

    • 71
    • 93

    Mostly Sunny

    • 72
    • 97

    Sunny

    • 72
    • 97

    Mostly Sunny

    • 70
    • 96

    Mostly Sunny

    • 69
    • 93

    Partly Sunny

    • 70
    • 91

    Partly Sunny

Today 11 Jul Big Stone

Mostly sunny. Hot with Highs in the lower 90s. South Winds 10 to 15 Mph.

Tonight 11 Jul Big Stone

Clear with Lows around 70. South Winds 5 to 10 Mph. Heat index Values up to 100 early in the evening.

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Dismal Swamp State Wildlife Management Area Temperature Statistics

July Temperature

Ortonville, Ortonville Muncipal-Martinson Field Airport (13.7 miles)

  • Lowest 5 July, 2026

    60.8 °F

  • Average July

    73.1 °F

  • Highest 6 July, 2026

    89.6 °F

Climate (2021–2026)

Ortonville, Ortonville Muncipal-Martinson Field Airport (13.7 miles)

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  • Average Low 2021–2026

    36 °F

  • Average 2021–2026

    45.3 °F

  • Average High 2021–2026

    55.1 °F
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