Peru Weather Forecast

    • 39
    • 69

    Sunny

    • 43
    • 67

    Mostly Sunny

    • 46
    • 70

    Partly Sunny

    • 45
    • 70

    Partly Sunny

    • 54
    • 73

    Partly Sunny

    • 55
    • 77

    Partly Sunny

Today 8 Oct La Salle

Sunny. Highs in the upper 60s. Northeast Winds 5 to 10 Mph.

Tonight 8 Oct La Salle

Clear. Lows in the upper 30s. East Winds around 5 Mph.

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Peru Temperature Statistics

October Temperature

Illinois Valley Regional Airport (1.9 miles)

  • Lowest 2 October, 2025

    54.9 °F

  • Average October

    71.4 °F

  • Highest 3 October, 2025

    89.8 °F

Climate (2020–Present)

Illinois Valley Regional Airport (1.9 miles)

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  • Average Low 2020–2025

    43.2 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    62.2 °F
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