Round Lake Weather Forecast

    • 58
    • 75

    Increasing Clouds

    • 63
    • 72

    Rain Showers Likely

    • 53
    • 73

    Rain Showers

    • 41
    • 63

    Slight Chance Rain Showers

    • 42
    • 63

    Partly Sunny

    • 38
    • 65

    Mostly Sunny

Today 29 Sep Clinton

Sunny. Patchy fog in the morning. Highs in the mid 70s. Light Winds.

Tonight 29 Sep Clinton

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 50s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Round Lake Temperature Statistics

September Temperature

Capital Region International Airport (10.6 miles)

  • Lowest 26 September, 2026

    40.6 °F

  • Average September

    64.9 °F

  • Highest 2 September, 2026

    91.7 °F

Climate (2021–2026)

Capital Region International Airport (10.6 miles)

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  • Average Low 2021–2026

    41.8 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    60.1 °F
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