Vandalia Weather Forecast

    • 69
    • 92

    Slight Chance Thunderstorms

    • 70
    • 93

    Partly Sunny

    • 64
    • 91

    Rain Showers Likely

    • 58
    • 80

    Rain Showers Likely

    • 53
    • 72

    Partly Sunny

    • 52
    • 74

    Partly Sunny

Today 18 Sep Fayette

Mostly sunny. A slight chance of Showers this afternoon. Highs in the lower 90s. Northeast Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 102.

Tonight 18 Sep Fayette

Partly cloudy. A slight chance of Showers and Thunderstorms in the evening. Lows in the upper 60s. East Winds 5 to 10 Mph, becoming southeast with Gusts up to 20 Mph after midnight. Chance of rain 20 percent.

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Vandalia Temperature Statistics

September Temperature

Salem, Salem-Leckrone Airport (23 miles)

  • Lowest 8 September, 2026

    57.6 °F

  • Average September

    81.4 °F

  • Highest 5 September, 2026

    102.4 °F

Climate (2021–2026)

Salem, Salem-Leckrone Airport (23 miles)

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  • Average Low 2021–2026

    49.8 °F

  • Average 2021–2026

    59.2 °F

  • Average High 2021–2026

    68.8 °F
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