Round Lake Beach, IL Weather Forecast
Local 7-day forecast
Chance Rain Showers then Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Round Lake Beach, IL in one place.
A chance of rain showers before 9am. Mostly cloudy, with a high near 51. North northeast wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a half and three quarters of an inch possible.
Local Weather Overview
This forecast page for Round Lake Beach, 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: Apr 9, 2026 3:26 PM CDT.
The active forecast window currently covers Apr 10 to Apr 15, 2026 for Round Lake Beach, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 10 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 3:26 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Round Lake Beach
Tuesday looks like the warmest upcoming period in Round Lake Beach at 79 degrees F.
Friday Night is the coolest period ahead with temperatures near 33 degrees F.
The strongest winds are forecast for Sunday at about 15 to 25 mph SSW.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 3:26 PM 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
Mostly clear, with a low around 33. East wind 0 to 5 mph, with gusts as high as 10 mph.
Mostly sunny, with a high near 55. East southeast wind 0 to 10 mph, with gusts as high as 20 mph.
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 73.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 77.
A slight chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 62.
Showers and thunderstorms likely. Mostly cloudy, with a high near 79.
Showers and thunderstorms. Mostly cloudy, with a low around 56.
Showers and thunderstorms likely. Mostly cloudy, with a high near 70.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 49.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 10
|
Chance Rain Showers then Mostly Cloudy
|
51°F |
5 to 10 mph
NNE
|
|
Friday Night
Apr 10
|
Mostly Clear
|
33°F |
0 to 5 mph
E
|
|
Saturday
Apr 11
|
Mostly Sunny
|
55°F |
0 to 10 mph
ESE
|
|
Saturday Night
Apr 11
|
Chance Showers And Thunderstorms
|
46°F |
10 to 15 mph
SE
|
|
Sunday
Apr 12
|
Chance Rain Showers
|
73°F |
15 to 25 mph
SSW
|
|
Sunday Night
Apr 12
|
Chance Showers And Thunderstorms
|
61°F |
15 to 20 mph
SW
|
|
Monday
Apr 13
|
Chance Showers And Thunderstorms
|
77°F |
10 to 15 mph
SW
|
|
Monday Night
Apr 13
|
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
62°F |
10 mph
SW
|
|
Tuesday
Apr 14
|
Showers And Thunderstorms Likely
|
79°F |
10 to 15 mph
SSW
|
|
Tuesday Night
Apr 14
|
Showers And Thunderstorms
|
56°F |
10 mph
SSW
|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely
|
70°F |
10 to 15 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
49°F |
10 to 15 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Round Lake Beach.