Fort Pierre Weather Forecast

    • 44
    • 62

    Chance Rain Showers

    • 50
    • 65

    Slight Chance Rain Showers

    • 54
    • 74

    Chance Rain Showers

    • 53
    • 77

    Mostly Cloudy

    • 56
    • 76

    Mostly Cloudy

    • 53
    • 75

    Partly Sunny

Today 21 Sep Stanley

Mostly cloudy. A chance of Showers, mainly this morning. Highs in the lower 60s. East Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

Tonight 21 Sep Stanley

Mostly cloudy. Lows in the lower 40s. Southeast Winds 10 to 15 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Fort Pierre Temperature Statistics

September Temperature

Pierre, Pierre Regional Airport (4.3 miles)

  • Lowest 17 September, 2026

    47.6 °F

  • Average September

    70.2 °F

  • Highest 5 September, 2026

    102.7 °F

Climate (2021–2026)

Pierre, Pierre Regional Airport (4.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    36.9 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    61.4 °F
Get WillyWeather+ to remove ads