Johnson City Weather Forecast

    • 30
    • 48

    Mostly Sunny

    • 30
    • 46

    Partly Sunny

    • 29
    • 48

    Sunny

    • 30
    • 48

    Mostly Sunny

    • 36
    • 47

    Chance Rain

    • 37
    • 50

    Slight Chance Rain

Today 21 Jan Inner Portland Metro

Widespread frost this morning. Sunny. Highs in the upper 40s. Northeast wind 5 to 10 Mph.

Tonight 21 Jan Inner Portland Metro

Mostly clear. Areas of frost in the evening. Widespread frost after midnight. Lows in the upper 20s. Northeast wind 5 to 10 Mph.

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Johnson City Temperature Statistics

January Temperature

Portland, Portland-Troutdale Airport (13 miles)

  • Lowest 13 January, 2026

    28.9 °F

  • Average January

    42.5 °F

  • Highest 12 January, 2026

    55.9 °F

Climate (2021–Present)

Portland, Portland-Troutdale Airport (13 miles)

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  • Average Low 2021–2026

    47.6 °F

  • Average 2021–2026

    56.2 °F

  • Average High 2021–2026

    65.2 °F
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