Kupreanof Weather Forecast

    • 42
    • 56

    Increasing Clouds

    • 43
    • 53

    Rain Showers

    • 44
    • 51

    Rain Showers

    • 43
    • 52

    Rain Showers

    • 42
    • 52

    Rain Showers

    • 42
    • 52

    Rain Showers

Today 25 Sep Petersburg Borough

Mostly clear. Patchy fog in the morning. Highs in the upper 50s. Light Winds.

Tonight 25 Sep Petersburg Borough

Mostly clear. Slight chance of rain Showers late. Lows in the lower 40s. East Winds around 10 Mph.

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Kupreanof Temperature Statistics

September Temperature

Petersburg (1.2 miles)

  • Lowest 15 September, 2026

    39 °F

  • Average September

    52.6 °F

  • Highest 3 September, 2026

    68 °F

Climate (2021–2026)

Petersburg (1.2 miles)

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  • Average Low 2021–2026

    38.1 °F

  • Average 2021–2026

    43.4 °F

  • Average High 2021–2026

    48.8 °F
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