Arlington Heights Weather Forecast

    • 39
    • 54

    Increasing Clouds

    • 39
    • 61

    Mostly Cloudy

    • 45
    • 63

    Partly Sunny

    • 30
    • 61

    Mostly Cloudy

    • 30
    • 42

    Partly Sunny

    • 35
    • 52

    Mostly Cloudy

Today 19 Mar Northern Cook

Mostly sunny early in the Morning, then becoming partly cloudy. Highs in the mid 50s Inland, but only in the upper 40s near the lake. Southeast Winds around 5 Mph.

Tonight 19 Mar Northern Cook

Mostly cloudy. Lows in the upper 30s. Southeast Winds around 5 Mph, becoming southwest after midnight.

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Arlington Heights Temperature Statistics

March Temperature

Chicago / Wheeling, Pal-Waukee Airport (4.3 miles)

  • Lowest 16 March, 2026

    18 °F

  • Average March

    40.6 °F

  • Highest 9 March, 2026

    72 °F

Climate (2021–Present)

Chicago / Wheeling, Pal-Waukee Airport (4.3 miles)

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  • Average Low 2021–2026

    44.1 °F

  • Average 2021–2026

    52.9 °F

  • Average High 2021–2026

    61.6 °F
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