Cosmopolis Weather Forecast

    • 52
    • 61

    Cloudy

    • 52
    • 62

    Mostly Cloudy

    • 51
    • 61

    Mostly Cloudy

    • 49
    • 61

    Mostly Cloudy

    • 51
    • 62

    Slight Chance Rain

    • 50
    • 65

    Partly Sunny

    • 50
    • 69

    Partly Sunny

Today 28 Jun Lower Chehalis River Valley

Cloudy. Highs in the upper 50s to mid 60s. West wind 10 to 15 Mph.

Tonight 28 Jun Lower Chehalis River Valley

Cloudy. Lows in the lower 50s. West wind 10 to 15 Mph with Gusts to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cosmopolis Temperature Statistics

June Temperature

Hoquiam, Bowerman Airport (6.8 miles)

  • Lowest 1 June, 2026

    42.7 °F

  • Average June

    59.6 °F

  • Highest 14 June, 2026

    87.7 °F

Climate (2021–2026)

Hoquiam, Bowerman Airport (6.8 miles)

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  • Average Low 2021–2026

    46.4 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    58.7 °F
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