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Round Lake Heights, IL 14 Day Weather - WeatherWorld.com
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Round Lake Heights, IL Weather Forecast
Round Lake Heights, IL Weather Forecast Dated: 439 PM Mon Sep 28 2026
Expect a cool pattern with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.
Monday, September 28, 2026
Mid-Morning
57°F 14°C
Partly Cloudy
Mid-Afternoon
70°F 21°C
Sunny
Early-Evening
63°F 17°C
Sunny
Pleasant near 70°F 21°C, cloudy in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure.
Tuesday, September 29, 2026
Mid-Morning
60°F 15°C
Sunny
Mid-Afternoon
72°F 22°C
Overcast
Early-Evening
69°F 21°C
Overcast
Comfortable with temperatures reaching 72°F 22°C, sunny in the morning, becoming overcast through the afternoon and evening, with steady humidity and barometric pressure falling. Winds turning from the S to the SSE at 6 mph 9 km/h.
Wednesday, September 30, 2026
Mid-Morning
62°F 17°C
Drizzle
Mid-Afternoon
64°F 18°C
Scattered Showers
Early-Evening
62°F 17°C
Light Rain
Comfortable at 64°F 18°C, locally heavy downpours at times, with increasing humidity and steady pressure. Winds switching from the SSE to the SSW at 8 mph 14 km/h. Gusts up to 26 mph 42 km/h.
Thursday, October 1, 2026
Mid-Morning
66°F 19°C
Light Showers
Mid-Afternoon
63°F 17°C
Light Showers
Early-Evening
61°F 16°C
Light Showers
Cool with a high near 63°F 17°C, rounds of showers expected off and on all day, with steady humidity and steady pressure. Winds moving from the WSW to the NNE at 6 mph 10 km/h.
Friday, October 2, 2026
Mid-Morning
54°F 12°C
Scattered Showers
Mid-Afternoon
59°F 15°C
Sunny
Early-Evening
54°F 12°C
Sunny
Refreshing around 59°F 15°C, scattered downpours possible, with lower humidity and barometric pressure rising. Winds swinging from the N to the NE at 6 mph 10 km/h.
Saturday, October 3, 2026
Mid-Morning
55°F 13°C
Sunny
Mid-Afternoon
62°F 17°C
Sunny
Early-Evening
61°F 16°C
Sunny
Mildly cool near 62°F 17°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling. Winds shifting from the ESE to the SE at 9 mph 13 km/h.
Sunday, October 4, 2026
Mid-Morning
54°F 12°C
Scattered Showers
Mid-Afternoon
59°F 15°C
Scattered Showers
Early-Evening
55°F 13°C
Scattered Showers
Comfortable at 59°F 15°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds increasing from the SW at 6 mph 9 km/h to WNW at 14 mph 22 km/h. Gusts up to 25 mph 40 km/h.
Monday, October 5, 2026
Mid-Morning
47°F 8°C
Scattered Showers
Mid-Afternoon
48°F 9°C
Overcast
Early-Evening
46°F 8°C
Cloudy
Crisp with a high near 48°F 9°C, scattered downpours possible, with steady humidity and barometric pressure rising. Winds out of the NW at 15 mph 23 km/h. Gusts up to 23 mph 37 km/h.
Tuesday, October 6, 2026
Mid-Morning
45°F 7°C
Sunny
Mid-Afternoon
57°F 14°C
Sunny
Early-Evening
55°F 13°C
Sunny
Brisk around 57°F 14°C, sunny throughout the day, with steady humidity and steady pressure.
Wednesday, October 7, 2026
Mid-Morning
53°F 12°C
Overcast
Mid-Afternoon
61°F 16°C
Overcast
Early-Evening
60°F 15°C
Overcast
Mildly cool near 61°F 16°C, overcast throughout the day, with steady humidity and steady pressure. Winds moving from the S to the SW at 8 mph 13 km/h. Gusts up to 21 mph 34 km/h.
Thursday, October 8, 2026
Mid-Morning
58°F 14°C
Overcast
Mid-Afternoon
60°F 16°C
Overcast
Early-Evening
52°F 11°C
Overcast
Comfortable at 60°F 16°C, partly cloudy in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds swinging from the NNW to the NNE at 9 mph 15 km/h.
Friday, October 9, 2026
Mid-Morning
43°F 6°C
Scattered Showers
Mid-Afternoon
50°F 10°C
Overcast
Early-Evening
48°F 9°C
Scattered Showers
Crisp with a high near 50°F 10°C, locally heavy downpours at times, with steady humidity and steady pressure. Winds shifting from the N to the WSW at 11 mph 17 km/h. Gusts up to 22 mph 35 km/h.
Saturday, October 10, 2026
Mid-Morning
47°F 8°C
Light Showers
Mid-Afternoon
51°F 11°C
Overcast
Early-Evening
50°F 10°C
Sunny
Brisk around 51°F 11°C, early showers breaking for a drier afternoon, with lower humidity and steady pressure. Winds turning from the SE to the NNW at 6 mph 11 km/h.
Sunday, October 11, 2026
Mid-Morning
49°F 9°C
Overcast
Mid-Afternoon
59°F 15°C
Overcast
Early-Evening
53°F 12°C
Sunny
Mildly cool near 59°F 15°C, partly cloudy through the afternoon, turning overcast this evening, with steady humidity and steady pressure. Winds switching from the NW to the N at 11 mph 18 km/h. Gusts up to 22 mph 34 km/h.
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