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.
Round Lake Temperature Statistics
September Temperature
Capital Region International Airport (10.6 miles)
Lowest 8 September, 2025
39 °FAverage September
61.6 °FHighest 14 September, 2025
82.9 °F
Climate (2020–Present)
Capital Region International Airport (10.6 miles)
Average Low 2020–2025
42.1 °FAverage 2020–2025
51 °FAverage High 2020–2025
60 °F