Downtown Ann Arbor Weather Forecast

    • 57
    • 74

    Partly Sunny

    • 59
    • 67

    Rain Showers

    • 53
    • 68

    Chance Rain Showers

    • 51
    • 62

    Chance Rain Showers

    • 53
    • 63

    Chance Rain Showers

    • 54
    • 66

    Mostly Cloudy

Today 18 Sep Washtenaw

Partly cloudy. Highs in the lower 70s. Northeast Winds 5 to 10 Mph.

Tonight 18 Sep Washtenaw

Mostly cloudy. A chance of Showers after midnight. Lows in the mid 50s. East Winds 5 to 10 Mph. Chance of rain 50 percent.

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Downtown Ann Arbor Temperature Statistics

September Temperature

Ann Arbor, Ann Arbor Municipal Airport (3.7 miles)

  • Lowest 3 September, 2026

    70 °F

  • Average September

    77.7 °F

  • Highest 2 September, 2026

    93 °F

Climate (2021–2026)

Ann Arbor, Ann Arbor Municipal Airport (3.7 miles)

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  • Average Low 2021–2026

    38.8 °F

  • Average 2021–2026

    49.3 °F

  • Average High 2021–2026

    59.4 °F
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