Arlington Heights Weather Forecast

    • 42
    • 55

    Rain Showers

    • 32
    • 45

    Rain/Snow Likely

    • 21
    • 37

    Rain/Snow Likely

    • 24
    • 32

    Partly Sunny

    • 33
    • 39

    Mostly Cloudy

    • 29
    • 43

    Chance Rain/Snow

    • 20
    • 34

    Chance Snow

Today 8 Jan Northern Cook

Showers in the afternoon. Near steady temperature in the lower 50s. South Winds 10 to 15 Mph, increasing to 15 to 20 Mph in the afternoon. Chance of precipitation near 100 percent.

Tonight 8 Jan Northern Cook

Showers and a chance of Thunderstorms early in the Evening, then a slight chance of Thunderstorms late in the evening. A chance of Showers in the late evening and overnight. Windy. Lows in the lower 40s. South Winds 15 to 20 Mph. Gusts up to 30 Mph, increasing to 40 Mph after midnight. Chance of precipitation near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Arlington Heights Temperature Statistics

January Temperature

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

  • Lowest 1 January, 2026

    10.9 °F

  • Average January

    26.8 °F

  • Highest 5 January, 2026

    45 °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

    61.4 °F
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