Vandalia Weather Forecast

    • 72
    • 91

    Mostly Sunny

    • 69
    • 95

    Rain Showers

    • 60
    • 80

    Rain Showers

    • 64
    • 83

    Partly Sunny

    • 67
    • 88

    Chance Rain Showers

    • 65
    • 88

    Chance Rain Showers

Today 8 Sep Owen

Mostly sunny through early Afternoon, then becoming partly cloudy. Hot with Highs in the lower 90s. South Winds around 5 Mph.

Tonight 8 Sep Owen

Mostly clear. Warmer with Lows in the lower 70s. South Winds 5 to 10 Mph.

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Vandalia Temperature Statistics

September Temperature

Bloomington, Monroe County Airport (17.4 miles)

  • Lowest 2 September, 2026

    70.6 °F

  • Average September

    82.8 °F

  • Highest 3 September, 2026

    95.6 °F

Climate (2021–2026)

Bloomington, Monroe County Airport (17.4 miles)

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  • Average Low 2021–2026

    46.1 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    66.6 °F
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