Perth Weather Forecast

    • 51
    • 79

    Rain Showers

    • 38
    • 60

    Rain Showers

    • 47
    • 66

    Slight Chance Rain Showers

    • 37
    • 60

    Mostly Sunny

    • 38
    • 60

    Partly Sunny

    • 42
    • 65

    Chance Rain Showers

Today 18 Oct Clay

Partly cloudy this Morning, then becoming mostly cloudy. Isolated Showers and Thunderstorms this Morning, then Showers and scattered Thunderstorms this afternoon. Highs around 80. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 80 percent.

Tonight 18 Oct Clay

Showers. Scattered Thunderstorms through Midnight, then isolated Thunderstorms toward daybreak. Lows in the lower 50s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain near 100 percent.

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Perth Temperature Statistics

October Temperature

Terre Haute Regional Airport (13 miles)

  • Lowest 10 October, 2025

    36 °F

  • Average October

    63.8 °F

  • Highest 3 October, 2025

    90 °F

Climate (2020–Present)

Terre Haute Regional Airport (13 miles)

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  • Average Low 2020–2025

    45.7 °F

  • Average 2020–2025

    55.5 °F

  • Average High 2020–2025

    65.5 °F
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