Perth Weather Forecast

    • 56
    • 87

    Decreasing Clouds

    • 64
    • 80

    Mostly Sunny

    • 69
    • 93

    Chance Rain Showers

    • 71
    • 92

    Partly Sunny

    • 68
    • 91

    Chance Rain Showers

    • 66
    • 86

    Slight Chance Thunderstorms

    • 65
    • 86

    Chance Rain Showers

Today 13 Sep Clay

Partly cloudy. Highs in the upper 80s. North Winds 5 to 10 Mph. Gusts up to 20 Mph late.

Tonight 13 Sep Clay

Partly cloudy through the late Overnight, then clearing. Lows in the upper 50s. Northeast Winds 5 to 10 Mph.

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Perth Temperature Statistics

September Temperature

Terre Haute Regional Airport (13 miles)

  • Lowest 8 September, 2026

    59 °F

  • Average September

    77.9 °F

  • Highest 1 September, 2026

    97 °F

Climate (2021–2026)

Terre Haute Regional Airport (13 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    55.8 °F

  • Average High 2021–2026

    65.7 °F
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