Lake County, IL Weather Forecast
County weather hub
Mostly Sunny then Slight Chance Rain Showers
Compare major city weather across Lake County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 76.
County Weather Overview
This county weather page brings together forecast coverage for Lake County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 30 of 30 mapped cities in Lake County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 24, 2026
- Latest sync
- Aug 18, 2026 4:14 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Lake County
Monday looks like the warmest upcoming period in Lake County at 76 degrees F.
Monday Night is the coolest period ahead with temperatures near 62 degrees F.
The strongest winds are forecast for Monday at about 0 to 5 mph SSW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 18, 2026 4:14 PM CDT
- Coverage
- 1 day
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of rain showers. Partly cloudy, with a low around 62.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 24
|
Mostly Sunny then Slight Chance Rain Showers
|
76°F |
0 to 5 mph
SSW
|
|
Monday Night
Aug 24
|
Slight Chance Rain Showers
|
62°F |
0 to 5 mph
S
|
Major City Forecasts
Live forecast snapshots for major cities across Lake County.
Coverage
Forecast coverage currently spans 30 of 30 mapped cities in Lake County.
Largest mapped city population in this region: 85,453.
