Agar Weather Forecast

    • 41
    • 59

    Slight Chance Rain Showers

    • 47
    • 61

    Chance Rain Showers

    • 51
    • 68

    Chance Rain Showers

    • 51
    • 73

    Mostly Cloudy

    • 53
    • 71

    Slight Chance Rain Showers

    • 50
    • 70

    Partly Sunny

Today 21 Sep Sully

Mostly cloudy. Showers Likely, mainly this morning. Highs in the upper 50s. East Winds 10 to 15 Mph. Chance of rain 70 percent.

Tonight 21 Sep Sully

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the lower 40s. Southeast Winds 5 to 10 Mph.

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Agar Temperature Statistics

September Temperature

Pierre, Pierre Regional Airport (32.9 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 (32.9 miles)

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  • Average Low 2021–2026

    36.9 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    61.4 °F
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