Alton Weather Forecast

    • 31
    • 51

    Partly Sunny

    • 32
    • 68

    Mostly Sunny

    • 21
    • 43

    Mostly Cloudy

    • 12
    • 43

    Partly Sunny

    • 23
    • 35

    Partly Sunny

    • 23
    • 50

    Partly Sunny

Today 10 Dec Osborne

Sunny in the morning then becoming partly cloudy. Highs around 50. Northwest Winds 10 to 15 Mph with Gusts to around 25 Mph.

Tonight 10 Dec Osborne

Mostly cloudy in the evening then becoming mostly clear. Lows in the lower 30s. South Winds around 10 Mph.

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Alton Temperature Statistics

December Temperature

Russell, Russell Municipal Airport (41.6 miles)

  • Lowest 2 December, 2025

    16 °F

  • Average December

    31.6 °F

  • Highest 6 December, 2025

    57.9 °F

Climate (2020–Present)

Russell, Russell Municipal Airport (41.6 miles)

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  • Average Low 2020–2025

    43.8 °F

  • Average 2020–2025

    56.3 °F

  • Average High 2020–2025

    69.3 °F
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