Erin Aero Airport Weather Forecast

    • 43
    • 71

    Chance Rain Showers

    • 39
    • 58

    Partly Sunny

    • 43
    • 57

    Mostly Cloudy

    • 46
    • 59

    Chance Rain Showers

    • 48
    • 69

    Mostly Cloudy

    • 53
    • 75

    Slight Chance Thunderstorms

Today 19 May Washington

Cooler. Partly sunny. A 40 percent chance of light Showers in the morning. Highs in the lower 70s. West Winds 10 to 20 Mph with Gusts to around 35 Mph.

Tonight 19 May Washington

Much Colder. Partly cloudy then becoming mostly cloudy late in the evening then becoming partly cloudy. Lows in the lower 40s. Northwest Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Erin Aero Airport Temperature Statistics

May Temperature

Waukesha County Airport (14.9 miles)

  • Lowest 2 May, 2026

    30.2 °F

  • Average May

    50.6 °F

  • Highest 16 May, 2026

    82.4 °F

Climate (2021–Present)

Waukesha County Airport (14.9 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    46 °F

  • Average High 2021–2026

    56.6 °F
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