Granite Island Weather Forecast

    • 53
    • 56

    Rain

    • 52
    • 56

    Slight Chance Rain

    • 53
    • 61

    Partly Sunny

    • 54
    • 60

    Partly Sunny

    • 52
    • 59

    Mostly Cloudy

    • 51
    • 57

    Slight Chance Rain Showers

Today 7 Sep Southern Kenai Mtns

Rain. Highs in the upper 50s. Variable wind 10 Mph.

Tonight 7 Sep Southern Kenai Mtns

Rain. Lows around 50. Southeast wind 10 to 15 Mph.

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Granite Island Temperature Statistics

September Temperature

Seward (34.2 miles)

  • Lowest 4 September, 2026

    39 °F

  • Average September

    53.7 °F

  • Highest 1 September, 2026

    66 °F

Climate (2021–2026)

Seward (34.2 miles)

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  • Average Low 2021–2026

    34.8 °F

  • Average 2021–2026

    40.2 °F

  • Average High 2021–2026

    45.6 °F
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