Hayden Mountain Airport Weather Forecast

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    Rain

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    Rain

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    Rain Likely

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    Rain

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    Rain Likely

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    Chance Rain

Today 18 Dec West Hills and Chehalem Mountains

Rain. Highs in the mid 50s. South wind 10 to 15 Mph, becoming southwest 15 to 20 Mph in the afternoon. Gusts up to 40 Mph. Chance of rain near 100 percent. Rainfall Amounts one inch to one and a half Inches.

Tonight 18 Dec West Hills and Chehalem Mountains

Rain. Lows in the upper 30s. West wind 15 to 20 Mph with Gusts up to 35 Mph, easing to 5 to 10 Mph after midnight. Chance of rain near 100 percent. Rainfall Amounts a half of an inch to one inch.

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Hayden Mountain Airport Temperature Statistics

December Temperature

Portland-Hillsboro Airport (8.1 miles)

  • Lowest 1 December, 2025

    30 °F

  • Average December

    49 °F

  • Highest 15 December, 2025

    63 °F

Climate (2020–Present)

Portland-Hillsboro Airport (8.1 miles)

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  • Average Low 2020–2025

    43.4 °F

  • Average 2020–2025

    53.7 °F

  • Average High 2020–2025

    64.4 °F
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