Round Lake Weather Forecast

    • 57
    • 85

    Partly Sunny

    • 52
    • 77

    Partly Sunny

    • 57
    • 79

    Partly Sunny

    • 61
    • 83

    Chance Rain Showers

    • 60
    • 79

    Chance Rain Showers

    • 57
    • 78

    Chance Rain Showers

Today 18 Sep Clinton

Sunny. Highs in the mid 80s. Light Winds becoming northwest 5 to 10 Mph in the afternoon.

Tonight 18 Sep Clinton

Partly cloudy. A 20 percent chance of Showers and Thunderstorms in the evening. Lows in the upper 50s. North Winds 5 to 10 Mph becoming northeast after midnight.

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Round Lake Temperature Statistics

September Temperature

Capital Region International Airport (10.6 miles)

  • Lowest 8 September, 2025

    39 °F

  • Average September

    61.6 °F

  • Highest 14 September, 2025

    82.9 °F

Climate (2020–Present)

Capital Region International Airport (10.6 miles)

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  • Average Low 2020–2025

    42.1 °F

  • Average 2020–2025

    51 °F

  • Average High 2020–2025

    60 °F
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