Clear Lake Weather Forecast

    • 47
    • 66

    Partly Sunny

    • 49
    • 71

    Mostly Cloudy

    • 49
    • 71

    Mostly Cloudy

    • 49
    • 65

    Chance Rain

    • 46
    • 58

    Chance Rain

    • 44
    • 62

    Partly Sunny

Today 18 Apr Lowlands of Western Skagit and Northwestern Snohomish Counties

Mostly sunny. Highs in the upper 50s to mid 60s. Light wind.

Tonight 18 Apr Lowlands of Western Skagit and Northwestern Snohomish Counties

Partly cloudy. Lows in the mid to upper 40s. Light wind becoming east to 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Clear Lake Temperature Statistics

April Temperature

Burlington/Mount Vernon, Skagit Regional Airport (8.1 miles)

  • Lowest 8 April, 2026

    35.6 °F

  • Average April

    48.5 °F

  • Highest 6 April, 2026

    68 °F

Climate (2021–Present)

Burlington/Mount Vernon, Skagit Regional Airport (8.1 miles)

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  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    51.4 °F

  • Average High 2021–2026

    59.6 °F
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