Dismal Swamp State Wildlife Management Area Weather Forecast

    • 34
    • 59

    Becoming Sunny

    • 32
    • 57

    Mostly Sunny

    • 46
    • 68

    Partly Sunny

    • 41
    • 70

    Breezy

    • 48
    • 73

    Partly Sunny

    • 50
    • 80

    Slight Chance Thunderstorms

Today 9 May Big Stone

Mostly sunny. Cooler with Highs in the upper 50s. North Winds 15 to 20 Mph.

Tonight 9 May Big Stone

Showers likely. Lows in the lower 40s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 70 percent.

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Dismal Swamp State Wildlife Management Area Temperature Statistics

May Temperature

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

  • Lowest 1 May, 2026

    32 °F

  • Average May

    48.9 °F

  • Highest 2 May, 2026

    69.8 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    36 °F

  • Average 2021–2026

    45.4 °F

  • Average High 2021–2026

    55.2 °F
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