Peru Weather Forecast

    • 28
    • 45

    Mostly Sunny

    • 29
    • 54

    Partly Sunny

    • 31
    • 55

    Rain

    • 22
    • 41

    Partly Sunny

    • 35
    • 51

    Chance Rain

    • 30
    • 52

    Slight Chance Rain

Today 16 Dec Hardy

Sunny. Highs around 40. South Winds around 5 Mph.

Tonight 16 Dec Hardy

Partly cloudy. Lows in the upper 20s. Southwest Winds 5 to 10 Mph.

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Peru Temperature Statistics

December Temperature

Petersburg, Grant County Airport (9.9 miles)

  • Lowest 13 December, 2025

    19.6 °F

  • Average December

    31.7 °F

  • Highest 10 December, 2025

    53.4 °F

Climate (2020–Present)

Petersburg, Grant County Airport (9.9 miles)

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  • Average Low 2020–2025

    44.3 °F

  • Average 2020–2025

    55.4 °F

  • Average High 2020–2025

    67.4 °F
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