Grant Trace State Forest Weather Forecast

    • 73
    • 90

    Rain Showers Likely

    • 73
    • 90

    Chance Thunderstorms

    • 72
    • 90

    Chance Thunderstorms

    • 66
    • 84

    Chance Thunderstorms

    • 64
    • 79

    Partly Sunny

    • 68
    • 83

    Slight Chance Thunderstorms

Today 13 Aug Harrison

Mostly cloudy after Midnight, then clearing. A slight chance of Showers and Thunderstorms after Midnight, then a chance of Showers and Thunderstorms this morning. Highs in the upper 80s. East Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent. Heat index Values up to 102.

Tonight 13 Aug Harrison

Mostly clear in the Evening, then becoming mostly cloudy. Lows in the lower 70s. East Winds 5 to 10 Mph with Gusts up to 20 Mph. Heat index Values up to 102 early in the evening.

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  • Temperature Real-Time

Grant Trace State Forest Temperature Statistics

August Temperature

Lamoni, Lamoni Municipal Airport (23 miles)

  • Lowest 1 August, 2026

    62.7 °F

  • Average August

    75.9 °F

  • Highest 9 August, 2026

    90.6 °F

Climate (2021–2026)

Lamoni, Lamoni Municipal Airport (23 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    63.9 °F
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