Agar Weather Forecast

    • 57
    • 81

    Slight Chance Rain Showers

    • 58
    • 82

    Partly Sunny

    • 60
    • 88

    Mostly Sunny

    • 59
    • 86

    Mostly Sunny

    • 60
    • 83

    Mostly Cloudy

    • 61
    • 83

    Slight Chance Thunderstorms

Today 18 Aug Sully

Partly sunny. Highs in the lower 80s. North Winds 5 to 10 Mph.

Tonight 18 Aug Sully

Partly cloudy with a slight chance of Thunderstorms in the Evening, then mostly cloudy after midnight. Lows in the upper 50s. Northeast Winds 5 to 10 Mph, becoming east after midnight. Chance of rain 20 percent.

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Agar Temperature Statistics

August Temperature

Pierre, Pierre Regional Airport (32.9 miles)

  • Lowest 5 August, 2026

    47.6 °F

  • Average August

    73.4 °F

  • Highest 2 August, 2026

    100.7 °F

Climate (2021–2026)

Pierre, Pierre Regional Airport (32.9 miles)

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  • Average Low 2021–2026

    36.9 °F

  • Average 2021–2026

    48.8 °F

  • Average High 2021–2026

    61.4 °F
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