Byrnes Mill Weather Forecast

    • 45
    • 52

    Rain

    • 34
    • 51

    Chance Rain

    • 41
    • 53

    Partly Sunny

    • 42
    • 66

    Mostly Cloudy

    • 32
    • 57

    Mostly Cloudy

    • 35
    • 49

    Chance Rain

Today 30 Jan Jefferson

A slight chance of Thunderstorms. Rain. Patchy fog. Highs around 50. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain near 100 percent.

Tonight 30 Jan Jefferson

Mostly cloudy with a 20 percent chance of rain. Lows in the upper 20s. Southeast Winds around 5 Mph.

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Byrnes Mill Temperature Statistics

January Temperature

St. Louis, Spirit Of St. Louis Airport (15.5 miles)

  • Lowest 21 January, 2025

    -0.1 °F

  • Average January

    25.1 °F

  • Highest 17 January, 2025

    57.7 °F

Climate (2020–Present)

St. Louis, Spirit Of St. Louis Airport (15.5 miles)

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  • Average Low 2020–2025

    45.9 °F

  • Average 2020–2025

    56.7 °F

  • Average High 2020–2025

    67.9 °F
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