Arlington Heights Weather Forecast

    • 41
    • 42

    Dense Fog

    • 56
    • 70

    Rain Showers

    • 37
    • 60

    Partly Sunny

    • 47
    • 60

    Mostly Sunny

    • 48
    • 69

    Mostly Sunny

    • 42
    • 65

    Rain Showers

Today 5 Mar Northern Cook

Cloudy. Areas of drizzle in the Morning, then patchy drizzle early in the afternoon. Widespread dense fog in the morning. Areas of dense fog in the afternoon. Highs in the lower 40s Inland, but only in the upper 30s near the lake. Near steady temperature in the lower 40s. North Winds 5 to 10 Mph.

Tonight 5 Mar Northern Cook

Cloudy. Areas of fog in the Evening, then widespread fog after midnight. Near steady temperature in the lower 40s. East Winds around 5 Mph.

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Arlington Heights Temperature Statistics

March Temperature

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

  • Lowest 1 March, 2026

    22.6 °F

  • Average March

    31.4 °F

  • Highest 2 March, 2026

    39.9 °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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