Evanston Weather Forecast

    • 51
    • 66

    Mostly Sunny

    • 57
    • 71

    Mostly Sunny

    • 62
    • 77

    Mostly Cloudy

    • 65
    • 76

    Mostly Sunny

    • 64
    • 75

    Mostly Sunny

    • 65
    • 77

    Partly Sunny

Today 7 Sep Northern Cook

Mostly sunny through mid Afternoon, then becoming partly cloudy. Highs in the upper 60s. Northwest Winds 5 to 10 Mph.

Tonight 7 Sep Northern Cook

Clear. Lows in the mid 40s. Northeast Winds around 5 Mph, becoming southwest after midnight.

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Evanston Temperature Statistics

September Temperature

Chicago, Chicago-O'Hare International Airport (11.2 miles)

  • Lowest 4 September, 2025

    48 °F

  • Average September

    64.5 °F

  • Highest 2 September, 2025

    80.1 °F

Climate (2020–Present)

Chicago, Chicago-O'Hare International Airport (11.2 miles)

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  • Average Low 2020–2025

    45.4 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    61.6 °F
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