Dismal Swamp State Wildlife Management Area Weather Forecast

    • 46
    • 66

    Decreasing Clouds

    • 53
    • 81

    Mostly Sunny

    • 60
    • 90

    Mostly Sunny

    • 60
    • 92

    Slight Chance Thunderstorms

    • 58
    • 86

    Slight Chance Thunderstorms

    • 56
    • 82

    Partly Sunny

Today 23 May Big Stone

Mostly cloudy this Morning, then becoming partly sunny. Warmer with Highs in the upper 60s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 23 May Big Stone

Mostly clear. Lows in the mid 40s. South Winds 5 to 10 Mph.

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Dismal Swamp State Wildlife Management Area Temperature Statistics

May Temperature

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

  • Lowest 7 May, 2026

    30.2 °F

  • Average May

    54.2 °F

  • Highest 15 May, 2026

    82.4 °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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