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Round Lake, IL Weather Tomorrow

Tomorrow's Round Lake weather report includes an accurate 5 day forecast with precipitation potential, daytime and nighttime forecasts, temperature highs and lows in Fahrenheit and Celsius, sunrise and sunset times, cloud cover, wind chill, wind speed, and wind direction for the Round Lake area and around Lake county, Illinois.
Updated: Tue Nov 3rd 2026 1:15 PM CST
Round Lake, IL Weather – 11-3 – Scattered Showers
70° / 61°
Scattered Showers
In Round Lake, showers likely at times with highs near 70°F and lows around 61°F. Rainfall predicted to have a 73% chance with an estimated 0.08in. Wind will be moderate, blowing around 17mph on average and gusts of 35.1mph at 7 PM. High humidity with average of 81% is anticipated, the maximum being 88% at 11 PM and 68% being its lowest at 4 PM. Barometric pressure is its highest of 29.8inHg at 2 PM, a lowest point of 29.69inHg at 11 PM with an avg 29.76inHg.
Round Lake, IL Weather – 11-4 – Scattered Showers
63° / 54°

Weather Tomorrow

Scattered Showers
In Round Lake, showers likely at times with highs near 63°F and lows around 54°F. The chance of rain is 83% with an estimated 0.17in. Wind will be moderate, blowing around 15mph on average and gusts of 30.6mph at 8 PM. High humidity with average of 82% is anticipated, the maximum being 95% at 2 AM and 73% being its lowest at 11 PM. Barometric pressure is its highest of 29.69inHg at 7 PM, a lowest point of 29.61inHg at 6 AM with an avg 29.65inHg.
Round Lake, IL Weather – 11-5 – Scattered Showers
54° / 47°
Scattered Showers
Scattered showers are in the forecast for Round Lake, with a high of 54°F and a low of 47°F. Rainfall predicted to have a 64% chance with an estimated 0.04in. Wind will be moderate, blowing around 15mph on average and gusts of 27.3mph at 1 AM. The humidity will be on the higher side, averaging about 79%, the maximum being 89% at 6 PM and 72% being its lowest at 11 AM. Barometric pressure is its highest of 29.96inHg at 11 PM, a lowest point of 29.66inHg at 3 AM with an avg 29.77inHg.
Round Lake, IL Weather – 11-6 – Sunny
49° / 39°
Sunny
A sunny day is in the forecast for Round Lake, with a high of 49°F and a low of 39°F. There might be light rainfall having a 18% chance with an estimated 0.01in. Wind will be moderate, blowing around 12mph on average and gusts of 20.1mph at 4 AM. The humidity will be on the higher side, averaging about 62%, the maximum being 84% at 12 AM and 42% being its lowest at 2 PM. Barometric pressure is its highest of 30.21inHg at 7 PM, a lowest point of 29.94inHg at 12 AM with an avg 30.12inHg.
Round Lake, IL Weather – 11-7 – Sunny
52° / 36°
Sunny
Bright and sunny conditions in Round Lake, with a high of 52°F and a low of 36°F. There's a very small chance of rainfall, only about 8%. Wind will be moderate, blowing around 11mph on average and gusts of 25.5mph at 11 PM. The humidity will be on the higher side, averaging about 62%, the maximum being 79% at 6 AM and 42% being its lowest at 1 PM. Barometric pressure is its highest of 30.22inHg at 2 AM, a lowest point of 30.03inHg at 10 PM with an avg 30.14inHg.
Round Lake, IL Weather – 11-8 – Partly Cloudy
57° / 42°
Partly Cloudy
Highs will reach 57°F with lows near 42°F in Round Lake, where overcast conditions are. There's a very small chance of rainfall, only about 9%. Winds will be light at 9mph and gusts of 26mph at 6 AM. The humidity will be on the higher side, averaging about 70%, the maximum being 88% at 6 AM and 49% being its lowest at 3 PM. Barometric pressure is its highest of 30.07inHg at 11 PM, a lowest point of 30.02inHg at 3 PM with an avg 30.05inHg.

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