Prospect Heights Weather Forecast

    • 41
    • 47

    Rain Showers Likely

    • 60
    • 68

    Rain Showers

    • 37
    • 61

    Partly Sunny

    • 48
    • 61

    Partly Sunny

    • 46
    • 70

    Chance Rain Showers

    • 45
    • 70

    Rain Showers Likely

Today 5 Mar Northern Cook

Cloudy. A chance of Showers late in the morning. A slight chance of drizzle in the late morning and early afternoon. Widespread dense fog late 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. Chance of precipitation 30 percent.

Tonight 5 Mar Northern Cook

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

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Prospect Heights Temperature Statistics

March Temperature

Chicago / Wheeling, Pal-Waukee Airport (2.5 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 (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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