Merna Weather Forecast

    • 59
    • 85

    Becoming Sunny

    • 56
    • 82

    Partly Sunny

    • 57
    • 82

    Partly Sunny

    • 55
    • 84

    Mostly Sunny

    • 55
    • 80

    Partly Sunny

    • 55
    • 81

    Mostly Sunny

Today 27 May McLean

Mostly sunny. Highs in the mid 80s. Northeast Winds 5 to 10 Mph.

Tonight 27 May McLean

Mostly clear. Lows in the upper 50s. Northeast Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Merna Temperature Statistics

May Temperature

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

  • Lowest 2 May, 2026

    37.9 °F

  • Average May

    60 °F

  • Highest 17 May, 2026

    82.9 °F

Climate (2021–Present)

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

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    53.1 °F

  • Average High 2021–2026

    62.6 °F
Get WillyWeather+ to remove ads