Arnold Lake Weather Forecast

    • 58
    • 73

    Slight Chance Thunderstorms

    • 66
    • 77

    Chance Rain Showers

    • 59
    • 83

    Chance Rain Showers

    • 55
    • 72

    Rain Showers Likely

    • 53
    • 67

    Chance Rain Showers

    • 53
    • 69

    Slight Chance Thunderstorms

    • 55
    • 70

    Chance Rain Showers

Today 16 Sep Custer

Mostly sunny with a 20 percent chance of Showers. Highs in the lower 70s.

Tonight 16 Sep Custer

Mostly cloudy. A slight chance of Showers and Thunderstorms after midnight. Patchy fog after midnight. Lows in the upper 50s. South Winds up to 10 Mph in the Evening, becoming light and variable. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Arnold Lake Temperature Statistics

September Temperature

Broken Bow, Broken Bow Municipal Airport (28 miles)

  • Lowest 10 September, 2026

    49.6 °F

  • Average September

    72.7 °F

  • Highest 7 September, 2026

    96.7 °F

Climate (2021–2026)

Broken Bow, Broken Bow Municipal Airport (28 miles)

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  • Average Low 2021–2026

    37.8 °F

  • Average 2021–2026

    51.3 °F

  • Average High 2021–2026

    65 °F
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