Helvetia Weather Forecast

    • 31
    • 45

    Sunny

    • 33
    • 47

    Mostly Sunny

    • 40
    • 46

    Chance Rain

    • 44
    • 51

    Rain

    • 40
    • 52

    Rain Likely

    • 36
    • 49

    Chance Rain

Today 3 Dec Tualatin Valley

Widespread frost this morning. Sunny. Highs in the upper 40s. Winds light.

Tonight 3 Dec Tualatin Valley

Clear. Lows in the lower 30s. Winds light.

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  • Temperature Real-Time

Helvetia Temperature Statistics

December Temperature

Portland-Hillsboro Airport (3.7 miles)

  • Lowest 1 December, 2024

    26.1 °F

  • Average December

    33 °F

  • Highest 1 December, 2024

    46 °F

Climate (2019–Present)

Portland-Hillsboro Airport (3.7 miles)

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  • Average Low 2019–2024

    43.2 °F

  • Average 2019–2024

    53.3 °F

  • Average High 2019–2024

    64 °F
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