Lake Arlington Weather Forecast

    • 45
    • 60

    Mostly Sunny

    • 47
    • 59

    Mostly Cloudy

    • 51
    • 63

    Rain Showers

    • 54
    • 72

    Slight Chance Thunderstorms

    • 56
    • 78

    Partly Sunny

    • 58
    • 80

    Mostly Cloudy

    • 61
    • 82

    Chance Rain Showers

Today 20 May Northern Cook

Mostly cloudy in the Morning, then becoming partly cloudy. Highs in the upper 50s Inland, but only in the lower 50s near the lake. Northeast Winds 10 to 15 Mph.

Tonight 20 May Northern Cook

Mostly clear in the Evening, then becoming partly cloudy. Lows in the mid 40s. Northeast Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Arlington Temperature Statistics

May Temperature

Chicago / Wheeling, Pal-Waukee Airport (2.5 miles)

  • Lowest 2 May, 2026

    30.7 °F

  • Average May

    55.8 °F

  • Highest 17 May, 2026

    85.6 °F

Climate (2021–Present)

Chicago / Wheeling, Pal-Waukee Airport (2.5 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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