Princeton Weather Forecast

    • 48
    • 54

    Rain Showers

    • 42
    • 60

    Chance Rain Showers

    • 46
    • 68

    Partly Sunny

    • 48
    • 68

    Chance Rain Showers

    • 47
    • 65

    Chance Rain Showers

    • 49
    • 67

    Chance Rain Showers

    • 49
    • 67

    Slight Chance Rain Showers

Today 21 May Bureau

Cloudy, cooler. Near steady temperature in the lower 50s. Northwest Winds around 15 Mph with Gusts up to 25 Mph.

Tonight 21 May Bureau

Mostly cloudy. A slight chance of Showers. Lows in the upper 40s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

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Princeton Temperature Statistics

May Temperature

Illinois Valley Regional Airport (16.2 miles)

  • Lowest 9 May, 2025

    38.3 °F

  • Average May

    62.7 °F

  • Highest 15 May, 2025

    97.5 °F

Climate (2020–Present)

Illinois Valley Regional Airport (16.2 miles)

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  • Average Low 2020–2025

    43.2 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    62.1 °F
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