Lake Petersburg Weather Forecast

    • 61
    • 92

    Mostly Sunny

    • 58
    • 92

    Mostly Sunny

    • 60
    • 92

    Mostly Sunny

    • 62
    • 92

    Chance Rain Showers

    • 61
    • 86

    Chance Rain Showers

    • 60
    • 82

    Chance Rain Showers

Today 15 Sep Menard

Sunny. Near steady temperature in the lower 90s. East Winds around 5 Mph.

Tonight 15 Sep Menard

Mostly clear. Lows in the lower 60s. East Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Petersburg Temperature Statistics

September Temperature

Springfield - Abraham Lincoln Capital Airport (13 miles)

  • Lowest 7 September, 2025

    39.9 °F

  • Average September

    65.2 °F

  • Highest 13 September, 2025

    97 °F

Climate (2020–Present)

Springfield - Abraham Lincoln Capital Airport (13 miles)

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  • Average Low 2020–2025

    44.8 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    64.9 °F
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