Hillsboro Weather Forecast

    • 76
    • 97

    Hot

    • 74
    • 96

    Partly Sunny

    • 72
    • 97

    Hot

    • 73
    • 95

    Mostly Sunny

    • 74
    • 95

    Partly Sunny

    • 71
    • 91

    Chance Rain Showers

    • 70
    • 91

    Chance Rain Showers

Today 16 Sep Hill

Mostly sunny. Hot with Highs around 100. Southeast Winds 5 to 10 Mph.

Tonight 16 Sep Hill

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 70s. Southeast Winds 5 to 10 Mph.

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Hillsboro Temperature Statistics

September Temperature

Hillsboro, Hillsboro Municipal Airport (5 miles)

  • Lowest 11 September, 2026

    73.2 °F

  • Average September

    87.3 °F

  • Highest 14 September, 2026

    101.3 °F

Climate (2021–2026)

Hillsboro, Hillsboro Municipal Airport (5 miles)

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  • Average Low 2021–2026

    58 °F

  • Average 2021–2026

    68.8 °F

  • Average High 2021–2026

    80.1 °F
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