Arlington Heights Weather Forecast

    • 62
    • 85

    Chance Rain Showers

    • 68
    • 85

    Chance Rain Showers

    • 67
    • 85

    Rain Showers

    • 52
    • 83

    Chance Thunderstorms

    • 45
    • 65

    Partly Sunny

    • 47
    • 63

    Partly Sunny

Today 16 May Northern Cook

Mostly cloudy in the Morning, then becoming partly cloudy. A chance of Showers and a slight chance of Thunderstorms early in the morning. A slight chance of Showers and Thunderstorms late. Highs in the lower 80s. Southwest Winds 5 to 10 Mph. Chance of precipitation 30 percent.

Tonight 16 May Northern Cook

Mostly cloudy. A slight chance of Showers in the evening. A slight chance of Thunderstorms. A chance of Showers after midnight. Lows in the lower 60s. Southeast Winds 5 to 10 Mph. Chance of precipitation 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Arlington Heights Temperature Statistics

May Temperature

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

  • Lowest 2 May, 2026

    30.7 °F

  • Average May

    51.7 °F

  • Highest 4 May, 2026

    81.6 °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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