Decatur Island - Davis Bay Weather Forecast

    • 52
    • 62

    Decreasing Clouds

    • 52
    • 61

    Partly Sunny

    • 53
    • 65

    Rain Likely

    • 52
    • 63

    Chance Rain

    • 52
    • 63

    Mostly Sunny

    • 53
    • 67

    Mostly Sunny

Today 29 Jul San Juan County

Mostly sunny. Highs in the mid 60s to lower 70s. Light wind.

Tonight 29 Jul San Juan County

Mostly clear. Lows in the upper 40s to mid 50s. Light wind becoming south to 10 Mph after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Decatur Island - Davis Bay Temperature Statistics

July Temperature

Friday Harbor Airport (9.9 miles)

  • Lowest 5 July, 2026

    46.9 °F

  • Average July

    60 °F

  • Highest 21 July, 2026

    84 °F

Climate (2021–2026)

Friday Harbor Airport (9.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    44.5 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    59.7 °F
Get WillyWeather+ to remove ads