Backbone State Forest Weather Forecast

    • 64
    • 78

    Chance Rain Showers

    • 55
    • 79

    Becoming Sunny

    • 51
    • 68

    Rain Showers

    • 62
    • 74

    Rain Showers

    • 55
    • 73

    Rain Showers Likely

    • 56
    • 69

    Chance Rain Showers

    • 54
    • 72

    Chance Thunderstorms

Today 11 Sep Delaware

Sunny. Near steady temperature in the upper 70s. South Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 11 Sep Delaware

Partly cloudy. A slight chance of Showers and Thunderstorms after midnight. Lows in the mid 60s. South Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Backbone State Forest Temperature Statistics

September Temperature

Oelwein Municipal Airport (21.1 miles)

  • Lowest 7 September, 2026

    62.6 °F

  • Average September

    74.2 °F

  • Highest 4 September, 2026

    89.6 °F

Climate (2021–2026)

Oelwein Municipal Airport (21.1 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    57.9 °F
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