Harbor Island Weather Forecast

    • 49
    • 55

    Rain

    • 50
    • 55

    Rain Showers

    • 48
    • 55

    Rain Likely

    • 47
    • 52

    Rain Showers

    • 47
    • 52

    Chance Rain Showers

    • 49
    • 53

    Chance Rain Showers

Today 18 Sep Southern Kenai Mtns

Rain. Highs in the lower 50s. Light Winds becoming variable 10 Mph in the afternoon.

Tonight 18 Sep Southern Kenai Mtns

A chance of rain Showers in the Evening, then rain likely after midnight. Lows in the lower 40s. Light Winds.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Harbor Island Temperature Statistics

September Temperature

Seward (31.7 miles)

  • Lowest 4 September, 2026

    39 °F

  • Average September

    55.2 °F

  • Highest 13 September, 2026

    68 °F

Climate (2021–2026)

Seward (31.7 miles)

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

  • Average Low 2021–2026

    34.8 °F

  • Average 2021–2026

    40.2 °F

  • Average High 2021–2026

    45.6 °F
Get WillyWeather+ to remove ads