Thomas Bay Weather Forecast

    • 45
    • 56

    Becoming Sunny

    • 45
    • 61

    Mostly Sunny

    • 47
    • 62

    Partly Sunny

    • 47
    • 60

    Partly Sunny

    • 47
    • 60

    Mostly Cloudy

    • 47
    • 59

    Mostly Cloudy

Today 10 Sep Petersburg Borough

Partly cloudy. Widespread dense fog in the morning. Highs 59 to 65. Light Winds.

Tonight 10 Sep Petersburg Borough

Mostly clear. Lows in the mid 40s. Light Winds.

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Thomas Bay Temperature Statistics

September Temperature

Petersburg (14.3 miles)

  • Lowest 5 September, 2026

    43 °F

  • Average September

    54.7 °F

  • Highest 3 September, 2026

    68 °F

Climate (2021–2026)

Petersburg (14.3 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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