Downey Weather Forecast

    • 53
    • 65

    Decreasing Clouds

    • 53
    • 66

    Partly Sunny

    • 55
    • 70

    Partly Sunny

    • 56
    • 68

    Mostly Sunny

    • 61
    • 73

    Partly Sunny

    • 65
    • 87

    Mostly Cloudy

Today 30 May Lake

Partly cloudy. Highs around 70 Inland, but only in the mid 60s near the lake. East Winds 10 to 15 Mph.

Tonight 30 May Lake

Partly cloudy. Lows in the lower 50s. East Winds 10 to 15 Mph, becoming southeast 5 to 10 Mph after midnight.

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Downey Temperature Statistics

May Temperature

Chicago/Waukegan Regional Airport (7.5 miles)

  • Lowest 2 May, 2026

    27.6 °F

  • Average May

    55.1 °F

  • Highest 16 May, 2026

    83.6 °F

Climate (2021–Present)

Chicago/Waukegan Regional Airport (7.5 miles)

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  • Average Low 2021–2026

    42.2 °F

  • Average 2021–2026

    51.1 °F

  • Average High 2021–2026

    59.8 °F
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