Blairsville Weather Forecast

    • 63
    • 88

    Decreasing Clouds

    • 56
    • 81

    Sunny

    • 54
    • 79

    Partly Sunny

    • 53
    • 79

    Mostly Sunny

    • 56
    • 81

    Mostly Sunny

    • 58
    • 82

    Partly Sunny

Today 23 Aug Williamson

Patchy fog in the morning. Mostly sunny. Highs in the upper 80s. North Winds around 5 Mph.

Tonight 23 Aug Williamson

Partly cloudy in the Evening, then clearing. Lows in the lower 60s. North Winds around 5 Mph.

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Blairsville Temperature Statistics

August Temperature

Southern Illinois Airport (6.8 miles)

  • Lowest 3 August, 2025

    55.7 °F

  • Average August

    79.3 °F

  • Highest 19 August, 2025

    98.7 °F

Climate (2020–Present)

Southern Illinois Airport (6.8 miles)

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  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    58.1 °F

  • Average High 2020–2025

    68.7 °F
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