Agar Weather Forecast

    • 61
    • 84

    Chance Thunderstorms

    • 56
    • 77

    Rain Showers

    • 58
    • 83

    Mostly Sunny

    • 55
    • 81

    Chance Thunderstorms

    • 52
    • 75

    Chance Rain Showers

    • 50
    • 74

    Slight Chance Rain Showers

Today 13 Sep Sully

Mostly cloudy. A slight chance of Thunderstorms Early, then a chance of Thunderstorms this afternoon. Humid with Highs in the mid 80s. Northeast Winds 15 to 20 Mph, becoming southeast 10 to 15 Mph this afternoon. Chance of rain 50 percent.

Tonight 13 Sep Sully

Mostly cloudy. A slight chance of Thunderstorms in the Evening, then a chance of Thunderstorms after midnight. Humid with Lows in the lower 60s. North Winds 5 to 10 Mph. Chance of rain 50 percent.

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Agar Temperature Statistics

September Temperature

Pierre, Pierre Regional Airport (32.9 miles)

  • Lowest 6 September, 2025

    39 °F

  • Average September

    63.7 °F

  • Highest 9 September, 2025

    86 °F

Climate (2020–Present)

Pierre, Pierre Regional Airport (32.9 miles)

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  • Average Low 2020–2025

    36.8 °F

  • Average 2020–2025

    48.6 °F

  • Average High 2020–2025

    61.2 °F
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