South - Lake Union Weather Forecast

    • 37
    • 51

    Mostly Cloudy

    • 42
    • 52

    Rain

    • 42
    • 52

    Rain

    • 37
    • 51

    Rain

    • 36
    • 53

    Chance Rain

    • 39
    • 56

    Partly Sunny

Today 22 Mar City of Seattle

Partly sunny. Highs in the lower to mid 50s. South wind to 10 Mph becoming north in the afternoon.

Tonight 22 Mar City of Seattle

Mostly cloudy. Lows in the mid to upper 30s. North wind to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South - Lake Union Temperature Statistics

March Temperature

Boeing Field - King County International Airport (5.6 miles)

  • Lowest 13 March, 2026

    32 °F

  • Average March

    46.7 °F

  • Highest 2 March, 2026

    59 °F

Climate (2021–Present)

Boeing Field - King County International Airport (5.6 miles)

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  • Average Low 2021–2026

    47.1 °F

  • Average 2021–2026

    54.2 °F

  • Average High 2021–2026

    61.6 °F
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