Idaho Weather Forecast

    • 64
    • 91

    Chance Rain Showers

    • 60
    • 84

    Partly Sunny

    • 63
    • 86

    Partly Sunny

    • 68
    • 89

    Partly Sunny

    • 72
    • 93

    Partly Sunny

    • 61
    • 89

    Chance Thunderstorms

Today 5 Sep Pike

Partly cloudy with a chance of Showers with a slight chance of Thunderstorms. Hot with Highs in the lower 90s. West Winds 5 to 10 Mph. Chance of rain 40 percent. Heat index Values up to 101 in the afternoon.

Tonight 5 Sep Pike

Partly cloudy with a chance of Showers and Thunderstorms. Patchy fog. Unseasonably warm with Lows in the lower 70s. Southwest Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Idaho Temperature Statistics

September Temperature

Chillicothe Ross County Airport (24.9 miles)

  • Lowest 1 September, 2026

    69.8 °F

  • Average September

    79.8 °F

  • Highest 2 September, 2026

    93.2 °F

Climate (2021–2026)

Chillicothe Ross County Airport (24.9 miles)

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  • Average Low 2021–2026

    43.5 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    64.4 °F
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