Swansea Weather Forecast

    • 45
    • 50

    Rain

    • 35
    • 52

    Chance Rain

    • 42
    • 50

    Mostly Cloudy

    • 42
    • 64

    Mostly Cloudy

    • 33
    • 58

    Partly Sunny

    • 39
    • 49

    Chance Rain

Today 30 Jan St. Clair

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

Tonight 30 Jan St. Clair

Cloudy with a slight chance of Thunderstorms. Rain Likely, mainly in the evening. Patchy fog. Not as cool. Near steady temperature in the upper 40s. Southeast Winds 5 to 10 Mph, becoming south with Gusts up to 20 Mph after midnight. Chance of rain 70 percent.

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Swansea Temperature Statistics

January Temperature

Belleville, Scott AFB/MidAmerica Airport (7.5 miles)

  • Lowest 15 January, 2025

    2.7 °F

  • Average January

    26.3 °F

  • Highest 28 January, 2025

    56.5 °F

Climate (2020–Present)

Belleville, Scott AFB/MidAmerica Airport (7.5 miles)

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  • Average Low 2020–2025

    47.1 °F

  • Average 2020–2025

    56.9 °F

  • Average High 2020–2025

    67.1 °F
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