Big Lake Weather Forecast

    • 57
    • 77

    Partly Sunny

    • 57
    • 79

    Mostly Sunny

    • 57
    • 80

    Mostly Sunny

    • 55
    • 79

    Partly Sunny

    • 54
    • 73

    Partly Sunny

    • 53
    • 73

    Partly Sunny

    • 54
    • 74

    Mostly Sunny

Today 21 Jul Lowlands of Western Skagit and Northwestern Snohomish Counties

Sunny. A slight chance of Showers late in the afternoon. Highs in the upper 60s to mid 70s. Light wind becoming west to 10 Mph in the afternoon.

Tonight 21 Jul Lowlands of Western Skagit and Northwestern Snohomish Counties

Partly cloudy. A slight chance of Showers in the evening. Lows in the 50s. West wind to 10 Mph becoming south after midnight.

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Big Lake Temperature Statistics

July Temperature

Burlington/Mount Vernon, Skagit Regional Airport (9.3 miles)

  • Lowest 4 July, 2025

    46.4 °F

  • Average July

    63.3 °F

  • Highest 16 July, 2025

    87.8 °F

Climate (2020–Present)

Burlington/Mount Vernon, Skagit Regional Airport (9.3 miles)

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  • Average Low 2020–2025

    43.7 °F

  • Average 2020–2025

    51.3 °F

  • Average High 2020–2025

    59.8 °F
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