Erin Aero Airport Weather Forecast

    • 27
    • 43

    Mostly Cloudy

    • 30
    • 40

    Chance Rain

    • 32
    • 38

    Rain Likely

    • 34
    • 42

    Cloudy

    • 22
    • 44

    Slight Chance Rain

    • 6
    • 30

    Blustery

    • 10
    • 18

    Mostly Sunny

Today 23 Dec Washington

Partly sunny. Northwest Winds 5 to 15 Mph.

Tonight 23 Dec Washington

Partly cloudy until early morning then becoming mostly cloudy. Lows in the upper 20s. Northwest Winds 5 to 10 Mph shifting to the northeast after midnight.

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Erin Aero Airport Temperature Statistics

December Temperature

Waukesha County Airport (14.9 miles)

  • Lowest 14 December, 2025

    -5.8 °F

  • Average December

    20 °F

  • Highest 18 December, 2025

    46.4 °F

Climate (2020–Present)

Waukesha County Airport (14.9 miles)

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  • Average Low 2020–2025

    38.3 °F

  • Average 2020–2025

    45.8 °F

  • Average High 2020–2025

    56.3 °F
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