Bloomington Weather Forecast

    • 61
    • 81

    Decreasing Clouds

    • 64
    • 81

    Partly Sunny

    • 56
    • 83

    Slight Chance Thunderstorms

    • 53
    • 75

    Mostly Sunny

    • 50
    • 71

    Mostly Sunny

    • 50
    • 72

    Partly Sunny

Today 21 Aug McLean

Mostly sunny. Highs in the lower 80s. Northeast Winds around 10 Mph.

Tonight 21 Aug McLean

Mostly clear. Patchy fog after midnight. Lows in the lower 60s. Northeast Winds 5 to 10 Mph.

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Bloomington Temperature Statistics

August Temperature

Bloomington/Normal, Central Illinois Regional Airport at Bloomington-Normal (3.7 miles)

  • Lowest 3 August, 2025

    57 °F

  • Average August

    75.6 °F

  • Highest 16 August, 2025

    91.9 °F

Climate (2020–Present)

Bloomington/Normal, Central Illinois Regional Airport at Bloomington-Normal (3.7 miles)

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  • Average Low 2020–2025

    43.6 °F

  • Average 2020–2025

    52.8 °F

  • Average High 2020–2025

    62.1 °F
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