Lake County, IL Weather Forecast
County weather hub
Chance Rain Showers then Mostly Cloudy
Compare major city weather across Lake County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A chance of rain showers before 9am. Mostly cloudy, with a high near 48. 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.
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
- 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 Lake County
Tuesday looks like the warmest upcoming period in Lake County at 75 degrees F.
Friday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Sunday at about 15 to 20 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
- KLOT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 35. East northeast wind 0 to 5 mph.
Mostly sunny, with a high near 49. East southeast wind 5 to 10 mph.
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 44. 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 71.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59.
A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 74.
A chance of showers and thunderstorms before 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 59.
Showers and thunderstorms likely. Mostly cloudy, with a high near 75.
Showers and thunderstorms. Mostly cloudy, with a low around 55.
Showers and thunderstorms likely. Partly sunny, with a high near 68.
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
|
48°F |
5 to 10 mph
NNE
|
|
Friday Night
Apr 10
|
Partly Cloudy
|
35°F |
0 to 5 mph
ENE
|
|
Saturday
Apr 11
|
Mostly Sunny
|
49°F |
5 to 10 mph
ESE
|
|
Saturday Night
Apr 11
|
Chance Showers And Thunderstorms
|
44°F |
10 to 15 mph
SE
|
|
Sunday
Apr 12
|
Chance Rain Showers
|
71°F |
15 to 20 mph
SSW
|
|
Sunday Night
Apr 12
|
Chance Showers And Thunderstorms
|
59°F |
10 to 20 mph
SW
|
|
Monday
Apr 13
|
Chance Showers And Thunderstorms
|
74°F |
10 mph
SW
|
|
Monday Night
Apr 13
|
Chance Showers And Thunderstorms
|
59°F |
10 mph
SSW
|
|
Tuesday
Apr 14
|
Showers And Thunderstorms Likely
|
75°F |
10 mph
SW
|
|
Tuesday Night
Apr 14
|
Showers And Thunderstorms
|
55°F |
10 mph
SSW
|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely
|
68°F |
10 to 15 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
49°F |
5 to 10 mph
SW
|
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.
