Round Lake Weather Forecast

    • 29
    • 42

    Decreasing Clouds

    • 24
    • 46

    Mostly Cloudy

    • 22
    • 42

    Partly Sunny

    • 20
    • 31

    Snow

    • 10
    • 26

    Chance Snow

    • 4
    • 21

    Slight Chance Snow

Today 14 Feb McHenry

Patchy fog in the morning. Partly sunny. Highs around 40. Northwest Winds around 5 Mph.

Tonight 14 Feb McHenry

Partly cloudy. Lows in the upper 20s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Round Lake Temperature Statistics

February Temperature

Harvey Municipal Airport (23 miles)

  • Lowest 2 February, 2026

    8.6 °F

  • Average February

    28.7 °F

  • Highest 5 February, 2026

    46.4 °F

Climate (2021–Present)

Harvey Municipal Airport (23 miles)

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  • Average Low 2021–2026

    30.3 °F

  • Average 2021–2026

    41.3 °F

  • Average High 2021–2026

    52.1 °F
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