Merna Weather Forecast

    • 60
    • 70

    Mostly Cloudy

    • 53
    • 70

    Mostly Cloudy

    • 55
    • 70

    Mostly Cloudy

    • 51
    • 71

    Partly Sunny

    • 55
    • 72

    Mostly Sunny

    • 63
    • 77

    Rain Showers Likely

Today 24 Sep McLean

Mostly cloudy. Highs around 70. Northeast Winds 5 to 10 Mph.

Tonight 24 Sep McLean

Mostly cloudy. Lows around 60. East Winds around 5 Mph.

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Merna Temperature Statistics

September Temperature

Bloomington/Normal, Central Illinois Regional Airport at Bloomington-Normal (5 miles)

  • Lowest 14 September, 2026

    52 °F

  • Average September

    73.7 °F

  • Highest 1 September, 2026

    95 °F

Climate (2021–2026)

Bloomington/Normal, Central Illinois Regional Airport at Bloomington-Normal (5 miles)

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  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    53.2 °F

  • Average High 2021–2026

    62.7 °F
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