Zyistra Lake Weather Forecast

    • 45
    • 52

    Chance Rain

    • 44
    • 53

    Rain

    • 46
    • 54

    Rain

    • 43
    • 56

    Rain

    • 39
    • 51

    Rain

    • 38
    • 48

    Rain

Today 12 Dec San Juan County

Cloudy. Patchy fog in the morning. A chance of rain in the morning. A slight chance of rain late in the Morning, then a chance of rain in the afternoon. Highs in the lower to mid 50s. Light wind.

Tonight 12 Dec San Juan County

Mostly cloudy. A chance of rain in the Evening, then a slight chance of rain after midnight. Lows in the 40s. South wind around 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Zyistra Lake Temperature Statistics

December Temperature

Friday Harbor Airport (2.5 miles)

  • Lowest 1 December, 2025

    36 °F

  • Average December

    46.5 °F

  • Highest 8 December, 2025

    54 °F

Climate (2020–Present)

Friday Harbor Airport (2.5 miles)

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  • Average Low 2020–2025

    44.4 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    59.6 °F
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