Harrison Weather Forecast

    • 73
    • 98

    Isolated Thunderstorms

    • 68
    • 93

    Mostly Sunny

    • 60
    • 86

    Mostly Sunny

    • 63
    • 86

    Mostly Sunny

    • 70
    • 91

    Mostly Sunny

    • 71
    • 96

    Slight Chance Rain Showers

Today 4 Sep Vigo

Sunny, hot with Highs in the upper 90s. West Winds around 5 Mph.

Tonight 4 Sep Vigo

Mostly clear through the late Overnight, then partly cloudy with isolated Showers and Thunderstorms toward daybreak. Humid with Lows in the lower 70s. Southwest Winds around 5 Mph. Chance of rain 20 percent.

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Harrison Temperature Statistics

September Temperature

Terre Haute Regional Airport (7.5 miles)

  • Lowest 2 September, 2026

    71.1 °F

  • Average September

    83.1 °F

  • Highest 1 September, 2026

    97 °F

Climate (2021–2026)

Terre Haute Regional Airport (7.5 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    55.7 °F

  • Average High 2021–2026

    65.7 °F
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