Flat Lake Weather Forecast

    • 21
    • 38

    Chance Snow

    • 25
    • 50

    Sunny

    • 38
    • 60

    Partly Sunny

    • 33
    • 60

    Chance Rain

    • 31
    • 56

    Mostly Sunny

    • 40
    • 64

    Partly Sunny

    • 40
    • 65

    Chance Rain

Today 19 Apr McHenry

Cloudy with a 50 percent chance of snow. Windy. Snow accumulation little or no. Highs in the upper 30s. Northwest Winds 25 to 30 Mph.

Tonight 19 Apr McHenry

Mostly cloudy with a slight chance of snow in the Evening, then partly cloudy after midnight. Lows in the lower 20s. Northwest Winds 10 to 15 Mph. Gusts up to 30 Mph in the evening. Chance of snow 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Flat Lake Temperature Statistics

April Temperature

Harvey Municipal Airport (22.4 miles)

  • Lowest 1 April, 2024

    17.6 °F

  • Average April

    43 °F

  • Highest 13 April, 2024

    75.2 °F

Climate (2019–Present)

Harvey Municipal Airport (22.4 miles)

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  • Average Low 2019–2024

    30 °F

  • Average 2019–2024

    41 °F

  • Average High 2019–2024

    51.5 °F
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