Evanston Weather Forecast

    • 58
    • 65

    Decreasing Clouds

    • 58
    • 66

    Partly Sunny

    • 56
    • 66

    Partly Sunny

    • 56
    • 65

    Mostly Cloudy

    • 58
    • 66

    Mostly Cloudy

    • 60
    • 70

    Partly Sunny

Today 23 Sep Northern Cook

Cloudy. Highs in the mid 60s. Northeast Winds 10 to 15 Mph.

Tonight 23 Sep Northern Cook

Mostly cloudy in the Evening, then becoming partly cloudy. Lows in the mid 50s. East Winds 5 to 10 Mph.

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Evanston Temperature Statistics

September Temperature

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

  • Lowest 14 September, 2026

    53.7 °F

  • Average September

    74.5 °F

  • Highest 2 September, 2026

    96.7 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    61.9 °F
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