Junction City Weather Forecast

    • 49
    • 69

    Decreasing Clouds

    • 49
    • 71

    Partly Sunny

    • 49
    • 70

    Mostly Cloudy

    • 49
    • 68

    Mostly Cloudy

    • 51
    • 68

    Mostly Cloudy

    • 50
    • 69

    Chance Rain

Today 19 Sep Lower Chehalis River Valley

Mostly cloudy. Highs in the mid 60s to lower 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 19 Sep Lower Chehalis River Valley

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 40s to lower 50s. Light wind.

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  • Temperature Real-Time

Junction City Temperature Statistics

September Temperature

Hoquiam, Bowerman Airport (6.8 miles)

  • Lowest 8 September, 2026

    48.7 °F

  • Average September

    60.7 °F

  • Highest 9 September, 2026

    73.7 °F

Climate (2021–2026)

Hoquiam, Bowerman Airport (6.8 miles)

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  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    58.6 °F
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