Arnolds Park Weather Forecast

    • 60
    • 66

    Chance Rain Showers

    • 57
    • 73

    Slight Chance Rain Showers

    • 48
    • 62

    Mostly Cloudy

    • 47
    • 60

    Mostly Sunny

    • 48
    • 62

    Partly Sunny

    • 44
    • 61

    Mostly Sunny

    • 50
    • 60

    Mostly Sunny

Today 29 Sep Dickinson

Mostly sunny. Highs in the mid 60s.

Tonight 29 Sep Dickinson

Cloudy. A chance of Showers with a slight chance of Thunderstorms this evening. Patchy fog after midnight. Lows around 60. Southwest Winds 10 to 15 Mph, Diminishing to around 5 Mph after midnight. Chance of rain 30 percent.

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Arnolds Park Temperature Statistics

September Temperature

Spencer Municipal Airport (14.3 miles)

  • Lowest 13 September, 2026

    44.7 °F

  • Average September

    67.1 °F

  • Highest 4 September, 2026

    94.6 °F

Climate (2021–2026)

Spencer Municipal Airport (14.3 miles)

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  • Average Low 2021–2026

    37.6 °F

  • Average 2021–2026

    49.3 °F

  • Average High 2021–2026

    61 °F
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