Hillsboro Weather Forecast

    • 70
    • 85

    Thunderstorms Likely

    • 69
    • 86

    Chance Thunderstorms

    • 72
    • 90

    Mostly Sunny

    • 75
    • 93

    Mostly Sunny

    • 75
    • 94

    Mostly Sunny

    • 73
    • 95

    Chance Thunderstorms

Today 6 Aug Jefferson

Mostly cloudy. Showers and Thunderstorms Likely, mainly in the morning. Some Thunderstorms may produce heavy rainfall in the morning. Humid with Highs in the mid 80s. South Winds around 5 Mph. Chance of rain 70 percent.

Tonight 6 Aug Jefferson

Mostly cloudy with a chance of Showers and Thunderstorms. Humid with Lows around 70. Southeast Winds around 5 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hillsboro Temperature Statistics

August Temperature

St. Louis, Spirit Of St. Louis Airport (29.2 miles)

  • Lowest 3 August, 2026

    63 °F

  • Average August

    73.8 °F

  • Highest 3 August, 2026

    84.9 °F

Climate (2021–2026)

St. Louis, Spirit Of St. Louis Airport (29.2 miles)

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  • Average Low 2021–2026

    46.1 °F

  • Average 2021–2026

    57.5 °F

  • Average High 2021–2026

    68.9 °F
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