Erin Aero Airport Weather Forecast

    • 27
    • 31

    Snow

    • 6
    • 29

    Snow Likely

    • 3
    • 18

    Chance Snow

    • -4
    • 20

    Chance Snow

    • -8
    • 4

    Chance Snow

    • -5
    • 6

    Slight Chance Snow

Today 9 Dec Washington

Cloudy. A 50 percent chance of light snow late in the afternoon. Highs in the lower 30s. West Winds 5 to 15 Mph.

Tonight 9 Dec Washington

Snow in the Evening, then Snow, possibly mixed with rain in the late evening and overnight. Snow accumulation of 1 to 4 Inches. Lows in the upper 20s. South Winds 10 to 15 Mph shifting to the west 15 to 20 Mph with Gusts to around 35 Mph after midnight. Chance of precipitation near 100 percent.

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Erin Aero Airport Temperature Statistics

December Temperature

Waukesha County Airport (14.9 miles)

  • Lowest 4 December, 2025

    3.2 °F

  • Average December

    19.5 °F

  • Highest 3 December, 2025

    30.2 °F

Climate (2020–Present)

Waukesha County Airport (14.9 miles)

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  • Average Low 2020–2025

    38.4 °F

  • Average 2020–2025

    45.8 °F

  • Average High 2020–2025

    56.4 °F
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