Petersburg Weather Forecast

    • 48
    • 74

    Mostly Sunny

    • 48
    • 75

    Mostly Sunny

    • 56
    • 77

    Partly Sunny

    • 56
    • 81

    Partly Sunny

    • 57
    • 82

    Partly Sunny

    • 57
    • 79

    Partly Sunny

Today 25 Aug Menard

Sunny. Near steady temperature in the lower 70s. Northwest Winds around 10 Mph.

Tonight 25 Aug Menard

Mostly clear. Lows in the upper 40s. Northwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Petersburg Temperature Statistics

August Temperature

Springfield - Abraham Lincoln Capital Airport (14.3 miles)

  • Lowest 3 August, 2025

    55.7 °F

  • Average August

    76.5 °F

  • Highest 16 August, 2025

    95.6 °F

Climate (2020–Present)

Springfield - Abraham Lincoln Capital Airport (14.3 miles)

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  • Average Low 2020–2025

    44.9 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    65 °F
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