Hartline Air Strip STOLport Weather Forecast

    • 60
    • 81

    Breezy

    • 39
    • 72

    Chance Thunderstorms

    • 36
    • 52

    Mostly Sunny

    • 51
    • 66

    Mostly Sunny

    • 54
    • 72

    Mostly Cloudy

    • 36
    • 70

    Chance Rain Showers

Today 14 Mar Union

Mostly sunny and breezy. Highs in the lower 80s. South Winds 10 to 15 Mph with Gusts up to 30 Mph, increasing to 15 to 25 Mph with Gusts up to 45 Mph this afternoon.

Tonight 14 Mar Union

Thunderstorms likely. Showers, breezy with Lows in the lower 60s. South Winds 20 to 25 Mph with Gusts up to 45 Mph. Chance of rain 90 percent.

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Hartline Air Strip STOLport Temperature Statistics

March Temperature

Southern Illinois Airport (21.7 miles)

  • Lowest 2 March, 2025

    23.8 °F

  • Average March

    47.3 °F

  • Highest 11 March, 2025

    75 °F

Climate (2020–Present)

Southern Illinois Airport (21.7 miles)

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  • Average Low 2020–2025

    47.6 °F

  • Average 2020–2025

    57.7 °F

  • Average High 2020–2025

    68.4 °F
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