Rochester Weather Forecast

    • 55
    • 84

    Slight Chance Thunderstorms

    • 52
    • 76

    Mostly Sunny

    • 49
    • 74

    Mostly Sunny

    • 49
    • 74

    Mostly Sunny

    • 54
    • 76

    Partly Sunny

    • 57
    • 79

    Partly Sunny

    • 59
    • 80

    Partly Sunny

Today 23 Aug Sangamon

Partly sunny with a slight chance of Showers and Thunderstorms. Highs in the mid 80s. Northwest Winds around 10 Mph. Chance of rain 20 percent.

Tonight 23 Aug Sangamon

Mostly clear. Lows in the mid 50s. Northwest Winds 5 to 10 Mph.

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Rochester Temperature Statistics

August Temperature

Springfield - Abraham Lincoln Capital Airport (9.9 miles)

  • Lowest 3 August, 2025

    55.7 °F

  • Average August

    77 °F

  • Highest 16 August, 2025

    95.6 °F

Climate (2020–Present)

Springfield - Abraham Lincoln Capital Airport (9.9 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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