Sully Lake Weather Forecast

    • 19
    • 46

    Mostly Sunny

    • 22
    • 37

    Mostly Cloudy

    • 26
    • 44

    Mostly Cloudy

    • 7
    • 39

    Mostly Cloudy

    • 4
    • 18

    Chance Snow

    • 3
    • 15

    Slight Chance Snow

Today 30 Jan Sully

Sunny. Highs in the mid 40s. Northwest Winds 5 to 15 Mph.

Tonight 30 Jan Sully

Clear. Lows 15 to 20. Northwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sully Lake Temperature Statistics

January Temperature

Pierre, Pierre Regional Airport (23.6 miles)

  • Lowest 6 January, 2025

    -12.2 °F

  • Average January

    16.9 °F

  • Highest 16 January, 2025

    47.6 °F

Climate (2020–Present)

Pierre, Pierre Regional Airport (23.6 miles)

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  • Average Low 2020–2025

    36.9 °F

  • Average 2020–2025

    48.6 °F

  • Average High 2020–2025

    61 °F
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