McLean Weather Forecast

    • 59
    • 80

    Mostly Cloudy

    • 64
    • 81

    Slight Chance Thunderstorms

    • 65
    • 81

    Chance Thunderstorms

    • 66
    • 85

    Mostly Sunny

    • 68
    • 87

    Mostly Sunny

    • 70
    • 88

    Mostly Sunny

    • 70
    • 89

    Mostly Sunny

Today 3 Aug McLean

Sunny. Near steady temperature in the upper 70s. East Winds 5 to 10 Mph.

Tonight 3 Aug McLean

Partly cloudy this Evening, then becoming mostly cloudy. Lows in the upper 50s. East Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

McLean Temperature Statistics

August Temperature

Logan County Airport (13.7 miles)

  • Lowest 1 August, 2025

    59 °F

  • Average August

    68.8 °F

  • Highest 1 August, 2025

    79.2 °F

Climate (2020–Present)

Logan County Airport (13.7 miles)

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  • Average Low 2020–2025

    45.6 °F

  • Average 2020–2025

    55.5 °F

  • Average High 2020–2025

    65.4 °F
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