Barr Weather Forecast

    • 40
    • 48

    Increasing Clouds

    • 19
    • 52

    Rain

    • 28
    • 35

    Partly Sunny

    • 25
    • 51

    Partly Sunny

    • 26
    • 40

    Mostly Cloudy

    • 32
    • 42

    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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Barr Temperature Statistics

December Temperature

Jacksonville Municipal Airport (26.1 miles)

  • Lowest 14 December, 2025

    -9.2 °F

  • Average December

    22.7 °F

  • Highest 9 December, 2025

    44.8 °F

Climate (2020–Present)

Jacksonville Municipal Airport (26.1 miles)

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  • Average Low 2020–2025

    43.9 °F

  • Average 2020–2025

    53.8 °F

  • Average High 2020–2025

    63.5 °F
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