Lower Brule Weather Forecast

    • 13
    • 23

    Blustery

    • 28
    • 45

    Mostly Cloudy

    • 20
    • 38

    Mostly Sunny

    • 30
    • 42

    Partly Sunny

    • 30
    • 56

    Mostly Cloudy

    • 30
    • 44

    Mostly Cloudy

    • 32
    • 49

    Mostly Cloudy

Today 18 Dec Lyman

Mostly sunny with strong Winds. Much Colder. Near steady temperature in the lower 20s. Northwest Winds 35 to 45 Mph with Gusts up to 65 Mph.

Tonight 18 Dec Lyman

Mostly clear this Evening, then becoming partly cloudy. Brisk with Lows around 13. Northwest Winds 20 to 25 Mph, becoming southeast 15 to 20 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lower Brule Temperature Statistics

December Temperature

Chamberlain, Chamberlain Municipal Airport (24.9 miles)

  • Lowest 14 December, 2025

    -13.5 °F

  • Average December

    23.8 °F

  • Highest 9 December, 2025

    52.9 °F

Climate (2020–Present)

Chamberlain, Chamberlain Municipal Airport (24.9 miles)

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  • Average Low 2020–2025

    36.4 °F

  • Average 2020–2025

    47.6 °F

  • Average High 2020–2025

    59.3 °F
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