McLean Weather Forecast

    • 14
    • 25

    Chance Snow Showers

    • 8
    • 25

    Chance Snow Showers

    • 5
    • 14

    Chance Snow Showers

    • 18
    • 27

    Chance Snow Showers

    • 8
    • 25

    Chance Snow Showers

    • 15
    • 24

    Chance Snow

Today 18 Jan Tompkins

Mostly cloudy. A chance of snow Showers this morning. Highs in the mid 20s. West Winds 5 to 10 Mph. Chance of snow 50 percent.

Tonight 18 Jan Tompkins

Partly cloudy in the Evening, then becoming mostly cloudy. Lows near 15. Northwest Winds around 5 Mph, becoming southwest after midnight.

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McLean Temperature Statistics

January Temperature

Cortland County-Chase Field (4.3 miles)

  • Lowest 1 January, 2026

    10.4 °F

  • Average January

    28.6 °F

  • Highest 9 January, 2026

    46.4 °F

Climate (2021–Present)

Cortland County-Chase Field (4.3 miles)

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  • Average Low 2021–2026

    37.8 °F

  • Average 2021–2026

    47.3 °F

  • Average High 2021–2026

    56.6 °F
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