Petersburg Weather Forecast

    • 63
    • 84

    Chance Rain Showers

    • 68
    • 86

    Chance Thunderstorms

    • 64
    • 87

    Chance Thunderstorms

    • 60
    • 79

    Chance Rain Showers

    • 58
    • 74

    Chance Rain Showers

    • 55
    • 72

    Partly Sunny

Today 18 Sep Boone

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms late this morning. Highs in the lower 80s. Northeast Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 18 Sep Boone

Partly cloudy. Lows in the mid 60s. Northeast Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Petersburg Temperature Statistics

September Temperature

Cincinnati/Northern Kentucky International Airport (10.6 miles)

  • Lowest 14 September, 2026

    58.6 °F

  • Average September

    79.2 °F

  • Highest 4 September, 2026

    97.6 °F

Climate (2021–2026)

Cincinnati/Northern Kentucky International Airport (10.6 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    56.7 °F

  • Average High 2021–2026

    66.1 °F
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