Lake Bloomington Weather Forecast

    • 49
    • 66

    Chance Rain Showers

    • 49
    • 77

    Chance Rain Showers

    • 41
    • 66

    Mostly Sunny

    • 43
    • 66

    Chance Rain Showers

    • 50
    • 72

    Chance Rain Showers

    • 45
    • 69

    Partly Sunny

Today 8 May McLean

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms. Highs in the mid 60s. Southwest Winds 10 to 15 Mph. Chance of rain 50 percent.

Tonight 8 May McLean

Mostly cloudy. Lows in the upper 40s. Southwest Winds 5 to 10 Mph.

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Lake Bloomington Temperature Statistics

May Temperature

Bloomington/Normal, Central Illinois Regional Airport at Bloomington-Normal (11.2 miles)

  • Lowest 2 May, 2026

    37.9 °F

  • Average May

    53 °F

  • Highest 4 May, 2026

    75.9 °F

Climate (2021–Present)

Bloomington/Normal, Central Illinois Regional Airport at Bloomington-Normal (11.2 miles)

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  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    62.6 °F
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