Dismal Swamp State Wildlife Management Area Weather Forecast

    • 73
    • 95

    Increasing Clouds

    • 71
    • 97

    Chance Rain Showers

    • 69
    • 94

    Partly Sunny

    • 69
    • 93

    Mostly Sunny

    • 70
    • 94

    Chance Thunderstorms

    • 68
    • 92

    Chance Thunderstorms

Today 25 Jul Big Stone

Mostly sunny. Hot with Highs in the mid 90s. North Winds around 5 Mph, becoming northeast this afternoon. Heat index Values up to 101.

Tonight 25 Jul Big Stone

Partly cloudy in the Evening, then becoming mostly cloudy. Much warmer. Humid with Lows in the lower 70s. Southeast Winds 5 to 10 Mph, becoming south after midnight. 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 23 July, 2026

    53.6 °F

  • Average July

    74.8 °F

  • Highest 14 July, 2026

    91.4 °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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