Renton Weather Forecast

    • 31
    • 48

    Increasing Clouds

    • 31
    • 43

    Mostly Cloudy

    • 29
    • 46

    Mostly Sunny

    • 28
    • 45

    Mostly Sunny

    • 32
    • 45

    Mostly Cloudy

    • 36
    • 47

    Mostly Cloudy

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    • 51

    Chance Rain

Today 21 Jan Lowlands of Pierce and Southern King Counties

Mostly sunny. Areas of dense fog and dense freezing fog in the morning. Patchy fog in the afternoon. Highs in the 40s. Light wind.

Tonight 21 Jan Lowlands of Pierce and Southern King Counties

Mostly clear in the evening then becoming mostly cloudy. Widespread dense fog. Widespread dense freezing fog after midnight. Lows in the upper 20s to mid 30s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Renton Temperature Statistics

January Temperature

Renton Municipal Airport (0.6 miles)

  • Lowest 18 January, 2026

    30.9 °F

  • Average January

    44.7 °F

  • Highest 13 January, 2026

    59 °F

Climate (2021–Present)

Renton Municipal Airport (0.6 miles)

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  • Average Low 2021–2026

    47.4 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    62.2 °F
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