Erin Aero Airport Weather Forecast

    • 68
    • 78

    Rain Showers Likely

    • 57
    • 80

    Chance Rain Showers

    • 55
    • 74

    Mostly Sunny

    • 61
    • 78

    Chance Rain Showers

    • 57
    • 78

    Chance Rain Showers

    • 57
    • 74

    Chance Rain Showers

Today 8 Sep Washington

Mostly cloudy. Light Showers likely early in the Afternoon, then chance of light Showers and slight chance of Thunderstorms late in the afternoon. Highs in the upper 70s. South Winds 5 to 10 Mph. Chance of precipitation 70 percent.

Tonight 8 Sep Washington

Mostly cloudy. Chance of light Showers through around midnight. Chance of Thunderstorms through the night. Light Showers likely after midnight. Lows in the upper 60s. Southwest Winds 5 to 10 Mph with Gusts to around 25 Mph. Chance of precipitation 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Erin Aero Airport Temperature Statistics

September Temperature

Waukesha County Airport (14.9 miles)

  • Lowest 6 September, 2026

    59 °F

  • Average September

    73.3 °F

  • Highest 1 September, 2026

    87.8 °F

Climate (2021–2026)

Waukesha County Airport (14.9 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    46.2 °F

  • Average High 2021–2026

    56.6 °F
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