Dayton Weather Forecast

    • 47
    • 62

    Decreasing Clouds

    • 52
    • 73

    Partly Sunny

    • 46
    • 75

    Mostly Cloudy

    • 42
    • 69

    Mostly Sunny

    • 45
    • 70

    Mostly Sunny

    • 52
    • 77

    Mostly Sunny

Today 5 May La Salle

Mostly cloudy. A chance of Showers through mid morning. Highs in the lower 60s. Northeast Winds 5 to 10 Mph. Chance of precipitation 30 percent.

Tonight 5 May La Salle

Mostly cloudy early in the Evening, then becoming partly cloudy. Lows in the upper 40s. Northeast Winds around 5 Mph, becoming northwest after midnight.

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Dayton Temperature Statistics

May Temperature

Illinois Valley Regional Airport (18 miles)

  • Lowest 3 May, 2025

    46.8 °F

  • Average May

    57.2 °F

  • Highest 2 May, 2025

    67.1 °F

Climate (2020–Present)

Illinois Valley Regional Airport (18 miles)

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  • Average Low 2020–2025

    43.2 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    61.9 °F
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