Petersburg
Alaska, USA
Long-term weather forecast
Long-term weather forecast
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October weather forecast and Climate
Petersburg, AK

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  • The average high temperature in October: 47.7°F

The warmest month (with the highest average high temperature) is July (63.9°F).
The month with the lowest average high temperature is January (34.9°F).

  • The average low temperature in October: 37.5°F

The month with the highest average low temperature is July (48°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

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  • The average sea temperature in October: 48.7°F

The best month for swimming (with the highest average sea temperature) is August (54.2°F).
The coldest month (with the lowest average sea temperature) is March (41°F).

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