Hartline Air Strip STOLport Weather Forecast

    • 55
    • 81

    Sunny

    • 57
    • 80

    Becoming Sunny

    • 55
    • 78

    Mostly Sunny

    • 62
    • 80

    Partly Sunny

    • 53
    • 75

    Rain Showers Likely

    • 46
    • 67

    Slight Chance Rain Showers

    • 51
    • 72

    Mostly Sunny

Today 14 Oct Union

Sunny. Near steady temperature around 80. Northeast Winds around 5 Mph.

Tonight 14 Oct Union

Clear. Patchy fog after midnight. Lows in the mid 50s. Calm Winds.

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Hartline Air Strip STOLport Temperature Statistics

October Temperature

Southern Illinois Airport (21.7 miles)

  • Lowest 10 October, 2025

    41 °F

  • Average October

    66.3 °F

  • Highest 1 October, 2025

    87.8 °F

Climate (2020–Present)

Southern Illinois Airport (21.7 miles)

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  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    58.2 °F

  • Average High 2020–2025

    68.8 °F
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