Johnsburg Weather Forecast

    • 51
    • 75

    Mostly Cloudy

    • 47
    • 61

    Mostly Cloudy

    • 54
    • 65

    Mostly Cloudy

    • 56
    • 70

    Partly Sunny

    • 53
    • 74

    Partly Sunny

    • 55
    • 72

    Slight Chance Rain Showers

Today 25 Oct McHenry

Mostly cloudy with a 40 percent chance of Showers. Highs in the upper 60s.

Tonight 25 Oct McHenry

Mostly cloudy. Patchy fog late. Lows in the lower 50s. Southwest Winds around 5 Mph, becoming north after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Johnsburg Temperature Statistics

October Temperature

Chicago/Waukegan Regional Airport (19.3 miles)

  • Lowest 17 October, 2026

    36.6 °F

  • Average October

    58.1 °F

  • Highest 12 October, 2026

    86.6 °F

Climate (2021–2026)

Chicago/Waukegan Regional Airport (19.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    42.1 °F

  • Average 2021–2026

    51 °F

  • Average High 2021–2026

    59.7 °F
Get WillyWeather+ to remove ads