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

Freezing rain likely. Additional ice accumulation of up to a tenth of an inch. Cooler. Near steady temperature in the upper 20s. Northeast Winds 5 to 10 Mph. Chance of precipitation 70 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

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)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    52.7 °F

  • Average 2021–2026

    63.9 °F

  • Average High 2021–2026

    75.8 °F
Get WillyWeather+ to remove ads