Waterloo Weather Forecast

    • 55
    • 80

    Mostly Sunny

    • 48
    • 71

    Partly Sunny

    • 53
    • 74

    Partly Sunny

    • 52
    • 78

    Mostly Sunny

    • 53
    • 77

    Sunny

    • 55
    • 78

    Mostly Sunny

Today 29 May De Kalb

Sunny. Highs around 80. West Winds around 5 Mph.

Tonight 29 May De Kalb

Mostly clear. Lows in the mid 50s. Northwest Winds around 5 Mph, becoming north with Gusts up to 20 Mph after midnight.

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Waterloo Temperature Statistics

May Temperature

Auburn De Kalb County Airport (8.7 miles)

  • Lowest 2 May, 2026

    28.4 °F

  • Average May

    57.4 °F

  • Highest 18 May, 2026

    86 °F

Climate (2021–Present)

Auburn De Kalb County Airport (8.7 miles)

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  • Average Low 2021–2026

    42.3 °F

  • Average 2021–2026

    51.3 °F

  • Average High 2021–2026

    60.7 °F
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