Edwardsville Weather Forecast

    • 71
    • 86

    Thunderstorms Likely

    • 57
    • 84

    Thunderstorms

    • 51
    • 70

    Mostly Cloudy

    • 56
    • 72

    Slight Chance Thunderstorms

    • 60
    • 76

    Chance Thunderstorms

    • 63
    • 81

    Slight Chance Thunderstorms

Today 18 May Madison

Mostly cloudy with Thunderstorms likely. A chance of Showers in the Morning, then Showers likely in the afternoon. Highs in the upper 80s. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 70 percent.

Tonight 18 May Madison

Partly cloudy. A slight chance of Showers and Thunderstorms in the Evening, then Showers and Thunderstorms likely after midnight. Lows around 70. South Winds 15 to 20 Mph. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Edwardsville Temperature Statistics

May Temperature

St. Louis Regional Airport (6.8 miles)

  • Lowest 7 May, 2026

    39.6 °F

  • Average May

    58.3 °F

  • Highest 15 May, 2026

    82.4 °F

Climate (2021–Present)

St. Louis Regional Airport (6.8 miles)

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  • Average Low 2021–2026

    46.5 °F

  • Average 2021–2026

    54.5 °F

  • Average High 2021–2026

    66.7 °F
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