Brighton Weather Forecast

    • 43
    • 53

    Increasing Clouds

    • 21
    • 54

    Rain

    • 30
    • 37

    Partly Sunny

    • 27
    • 53

    Partly Sunny

    • 28
    • 43

    Mostly Cloudy

    • 34
    • 43

    Mostly Cloudy

Today 17 Dec Macoupin

Sunny. Highs in the lower 50s. Northwest Winds around 5 Mph, becoming southeast this afternoon.

Tonight 17 Dec Macoupin

Partly cloudy in the Evening, then mostly cloudy with a slight chance of rain after midnight. Lows in the lower 40s. Temperature rising to around 50 after midnight. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

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Brighton Temperature Statistics

December Temperature

St. Louis Regional Airport (11.8 miles)

  • Lowest 5 December, 2025

    4.5 °F

  • Average December

    27 °F

  • Highest 9 December, 2025

    51.8 °F

Climate (2020–Present)

St. Louis Regional Airport (11.8 miles)

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  • Average Low 2020–2025

    46.2 °F

  • Average 2020–2025

    54 °F

  • Average High 2020–2025

    66.1 °F
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