Post Lake Weather Forecast

    • 60
    • 73

    Slight Chance Thunderstorms

    • 60
    • 83

    Chance Thunderstorms

    • 61
    • 80

    Chance Rain Showers

    • 64
    • 85

    Chance Thunderstorms

    • 65
    • 92

    Slight Chance Thunderstorms

    • 65
    • 93

    Chance Thunderstorms

Today 17 Jul Sully

Partly sunny. Highs in the lower 70s. Southeast Winds 10 to 15 Mph.

Tonight 17 Jul Sully

Mostly cloudy in the Evening, then becoming partly cloudy. Not as cool with Lows around 60. Southeast Winds 10 to 15 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Post Lake Temperature Statistics

July Temperature

Pierre, Pierre Regional Airport (24.9 miles)

  • Lowest 1 July, 2025

    52 °F

  • Average July

    76.5 °F

  • Highest 14 July, 2025

    104 °F

Climate (2020–Present)

Pierre, Pierre Regional Airport (24.9 miles)

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  • Average Low 2020–2025

    36.7 °F

  • Average 2020–2025

    48.6 °F

  • Average High 2020–2025

    61.3 °F
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