Oswego Weather Forecast

    • 36
    • 39

    Rain

    • 17
    • 47

    Mostly Sunny

    • 20
    • 43

    Mostly Sunny

    • 22
    • 45

    Partly Sunny

    • 18
    • 40

    Mostly Sunny

    • 20
    • 41

    Partly Sunny

Today 25 Jan Sumter

Cloudy. A chance of freezing rain in the Morning, then a chance of rain with a slight chance of freezing rain in the afternoon. Patchy fog. Ice accumulation of up to a tenth of an inch. Highs in the lower 40s. Northeast Winds 5 to 10 Mph. Chance of precipitation 50 percent.

Tonight 25 Jan Sumter

Patchy fog in the evening. Rain, mainly in the evening. Lows in the upper 30s. South Winds around 5 Mph, becoming west with Gusts up to 20 Mph after midnight. Chance of rain near 100 percent.

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Oswego Temperature Statistics

January Temperature

Sumter Airport (3.7 miles)

  • Lowest 16 January, 2026

    14 °F

  • Average January

    47 °F

  • Highest 10 January, 2026

    80.6 °F

Climate (2021–Present)

Sumter Airport (3.7 miles)

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  • Average Low 2021–2026

    52.7 °F

  • Average 2021–2026

    63.9 °F

  • Average High 2021–2026

    75.8 °F
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