Princeton Weather Forecast

    • 6
    • 23

    Mostly Sunny

    • 18
    • 25

    Mostly Cloudy

    • 19
    • 32

    Mostly Cloudy

    • 17
    • 31

    Chance Snow

    • 13
    • 29

    Mostly Cloudy

    • 25
    • 32

    Mostly Cloudy

Today 31 Jan Bureau

Sunny. Highs in the lower 20s. Northwest Winds 5 to 10 Mph. Gusts up to 25 Mph in the morning. Wind chill Values as low as 11 below in the morning.

Tonight 31 Jan Bureau

Mostly clear. Cold with Lows around 7 above. Northwest Winds around 5 Mph, becoming southwest after midnight.

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Princeton Temperature Statistics

January Temperature

Illinois Valley Regional Airport (16.2 miles)

  • Lowest 23 January, 2026

    -7.6 °F

  • Average January

    23.7 °F

  • Highest 8 January, 2026

    62.6 °F

Climate (2021–Present)

Illinois Valley Regional Airport (16.2 miles)

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  • Average Low 2021–2026

    43.1 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    62.1 °F
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