Downey Weather Forecast

    • 71
    • 83

    Chance Thunderstorms

    • 73
    • 88

    Mostly Cloudy

    • 74
    • 89

    Slight Chance Rain Showers

    • 72
    • 91

    Chance Thunderstorms

    • 70
    • 82

    Chance Rain Showers

    • 69
    • 80

    Chance Rain Showers

Today 30 Aug Lake

Mostly cloudy. A chance of Thunderstorms early in the morning. A chance of Showers. A slight chance of Thunderstorms in the late morning and afternoon. Highs in the mid 80s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of precipitation 50 percent.

Tonight 30 Aug Lake

Mostly cloudy. A slight chance of Showers and Thunderstorms early in the evening. A chance of Showers with a slight chance of Thunderstorms late. Lows around 70. South Winds 5 to 10 Mph. Chance of precipitation 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Downey Temperature Statistics

August Temperature

Chicago/Waukegan Regional Airport (7.5 miles)

  • Lowest 24 August, 2026

    52.6 °F

  • Average August

    71.1 °F

  • Highest 16 August, 2026

    85.6 °F

Climate (2021–2026)

Chicago/Waukegan Regional Airport (7.5 miles)

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  • Average Low 2021–2026

    42.1 °F

  • Average 2021–2026

    51 °F

  • Average High 2021–2026

    59.7 °F
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