Johnsburg Weather Forecast

    • 51
    • 71

    Decreasing Clouds

    • 61
    • 79

    Rain Showers Likely

    • 47
    • 74

    Rain Showers Likely

    • 45
    • 65

    Partly Sunny

    • 49
    • 65

    Rain Showers Likely

    • 48
    • 69

    Rain Showers Likely

Today 22 Apr McHenry

Partly cloudy. Highs in the lower 70s. North Winds 5 to 10 Mph, becoming northeast in the afternoon.

Tonight 22 Apr McHenry

Partly cloudy. Lows in the mid 50s. East Winds 5 to 10 Mph, becoming south after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Johnsburg Temperature Statistics

April Temperature

Chicago/Waukegan Regional Airport (19.3 miles)

  • Lowest 7 April, 2026

    26.7 °F

  • Average April

    50.7 °F

  • Highest 12 April, 2026

    81.6 °F

Climate (2021–Present)

Chicago/Waukegan Regional Airport (19.3 miles)

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  • Average Low 2021–2026

    42.3 °F

  • Average 2021–2026

    51.1 °F

  • Average High 2021–2026

    59.8 °F
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