Thompson Weather Forecast

    • 57
    • 82

    Mostly Sunny

    • 60
    • 84

    Mostly Sunny

    • 59
    • 81

    Partly Sunny

    • 60
    • 76

    Chance Rain Showers

    • 59
    • 74

    Chance Thunderstorms

    • 61
    • 75

    Chance Rain Showers

Today 16 Sep Washington

Sunny. Highs in the lower 80s. Southeast Winds around 5 Mph.

Tonight 16 Sep Washington

Clear. Patchy fog after midnight. Lows in the upper 50s. Southeast Winds up to 5 Mph through around midnight becoming calm.

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Thompson Temperature Statistics

September Temperature

Waukesha County Airport (16.2 miles)

  • Lowest 8 September, 2025

    41 °F

  • Average September

    58.5 °F

  • Highest 12 September, 2025

    80.6 °F

Climate (2020–Present)

Waukesha County Airport (16.2 miles)

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  • Average Low 2020–2025

    38.2 °F

  • Average 2020–2025

    45.7 °F

  • Average High 2020–2025

    56.2 °F
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