Round Lake Park, IL Weather Forecast
Local 7-day forecast
Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Round Lake Park, IL in one place.
A chance of rain showers before 1pm. Partly sunny, with a high near 85. West wind 5 to 10 mph. Chance of precipitation is 30%.
Local Weather Overview
This forecast page for Round Lake Park, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jun 8, 2026 7:01 AM CDT.
The active forecast window currently covers Jun 9 to Jun 14, 2026 for Round Lake Park, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 9 to Jun 14, 2026
- Latest sync
- Jun 8, 2026 7:01 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Round Lake Park
Wednesday looks like the warmest upcoming period in Round Lake Park at 90 degrees F.
Thursday Night is the coolest period ahead with temperatures near 62 degrees F.
The strongest winds are forecast for Wednesday at about 10 to 20 mph SSW.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 8, 2026 7:01 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. South southeast wind 0 to 5 mph, with gusts as high as 15 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
Showers and thunderstorms likely after 7pm. Mostly cloudy, with a low around 71.
Showers and thunderstorms likely. Partly sunny, with a high near 86.
Showers and thunderstorms likely before 7pm, then showers and thunderstorms likely. Partly cloudy, with a low around 62.
A slight chance of rain showers. Sunny, with a high near 84.
A chance of rain showers. Mostly clear, with a low around 63.
A chance of rain showers. Mostly sunny, with a high near 84.
A slight chance of rain showers before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 62.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 78.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jun 9
|
Chance Rain Showers
|
85°F |
5 to 10 mph
W
|
|
Tuesday Night
Jun 9
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
69°F |
0 to 5 mph
SSE
|
|
Wednesday
Jun 10
|
Chance Showers And Thunderstorms then Mostly Sunny
|
90°F |
10 to 20 mph
SSW
|
|
Wednesday Night
Jun 10
|
Showers And Thunderstorms Likely
|
71°F |
10 to 20 mph
SW
|
|
Thursday
Jun 11
|
Showers And Thunderstorms Likely
|
86°F |
10 to 15 mph
SW
|
|
Thursday Night
Jun 11
|
Showers And Thunderstorms Likely
|
62°F |
5 to 15 mph
WSW
|
|
Friday
Jun 12
|
Slight Chance Rain Showers
|
84°F |
5 to 10 mph
W
|
|
Friday Night
Jun 12
|
Chance Rain Showers
|
63°F |
5 to 10 mph
WSW
|
|
Saturday
Jun 13
|
Chance Rain Showers
|
84°F |
5 to 10 mph
SW
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms
|
62°F |
5 to 10 mph
WNW
|
|
Sunday
Jun 14
|
Chance Rain Showers
|
78°F |
5 to 10 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Round Lake Park.