Fort Pierre National Grassland Weather Forecast

    • 51
    • 65

    Breezy

    • 37
    • 57

    Chance Rain

    • 31
    • 48

    Partly Sunny

    • 30
    • 48

    Partly Sunny

    • 31
    • 52

    Partly Sunny

    • 35
    • 52

    Partly Sunny

Today 26 Oct Lyman

Mostly cloudy this Morning, then becoming partly sunny. Windy with Highs in the mid 60s. South Winds 20 to 30 Mph with Gusts up to 45 Mph.

Tonight 26 Oct Lyman

Cloudy, windy with Lows around 50. South Winds 20 to 30 Mph with Gusts up to 40 Mph, Diminishing to 15 to 20 Mph with Gusts up to 30 Mph after midnight.

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Fort Pierre National Grassland Temperature Statistics

October Temperature

Pierre, Pierre Regional Airport (15.5 miles)

  • Lowest 23 October, 2025

    27 °F

  • Average October

    55.1 °F

  • Highest 3 October, 2025

    93 °F

Climate (2020–Present)

Pierre, Pierre Regional Airport (15.5 miles)

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  • Average Low 2020–2025

    37 °F

  • Average 2020–2025

    48.8 °F

  • Average High 2020–2025

    61.3 °F
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