Brighton Weather Forecast

    • 41
    • 61

    Increasing Clouds

    • 45
    • 69

    Partly Sunny

    • 51
    • 76

    Partly Sunny

    • 53
    • 77

    Mostly Sunny

    • 36
    • 76

    Partly Sunny

    • 34
    • 51

    Mostly Cloudy

Today 18 Mar Macoupin

Mostly sunny. Not as cool with Highs around 60. South Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming west 5 to 10 Mph this afternoon.

Tonight 18 Mar Macoupin

Mostly cloudy. Not as cool with Lows around 40. South Winds around 5 Mph.

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Brighton Temperature Statistics

March Temperature

St. Louis Regional Airport (11.8 miles)

  • Lowest 16 March, 2026

    22.6 °F

  • Average March

    48.4 °F

  • Highest 10 March, 2026

    82.4 °F

Climate (2021–Present)

St. Louis Regional Airport (11.8 miles)

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  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    54.2 °F

  • Average High 2021–2026

    66.5 °F
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