Vandalia Weather Forecast

    • 69
    • 92

    Mostly Sunny

    • 71
    • 90

    Slight Chance Thunderstorms

    • 69
    • 91

    Mostly Cloudy

    • 64
    • 83

    Chance Rain Showers

    • 60
    • 78

    Chance Rain Showers

    • 58
    • 75

    Slight Chance Rain Showers

Today 17 Sep Audrain

Sunny. Highs in the lower 90s. Southwest Winds 5 to 10 Mph. Heat index Values up to 101.

Tonight 17 Sep Audrain

Mostly clear. Humid with Lows in the upper 60s. Northwest Winds around 5 Mph, becoming northeast after midnight.

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Vandalia Temperature Statistics

September Temperature

Pittsfield, Pittsfield Penstone Municipal Airport (44.1 miles)

  • Lowest 14 September, 2026

    57.6 °F

  • Average September

    77.1 °F

  • Highest 5 September, 2026

    99.3 °F

Climate (2021–2026)

Pittsfield, Pittsfield Penstone Municipal Airport (44.1 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    56.5 °F

  • Average High 2021–2026

    66.4 °F
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