Hartline Air Strip STOLport Weather Forecast

    • 57
    • 78

    Increasing Clouds

    • 58
    • 78

    Thunderstorms

    • 40
    • 71

    Rain Showers Likely

    • 36
    • 53

    Mostly Sunny

    • 51
    • 65

    Mostly Sunny

    • 54
    • 71

    Mostly Cloudy

    • 36
    • 67

    Chance Rain Showers

Today 13 Mar Union

Sunny. Near steady temperature in the mid 70s. South Winds 5 to 10 Mph.

Tonight 13 Mar Union

Clear this Evening, then becoming partly cloudy. Lows in the upper 50s. South Winds 5 to 10 Mph.

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  • Temperature Real-Time

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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