Lake County, IL Weather Forecast
County weather hub
Partly Cloudy
Compare major city weather across Lake County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Partly cloudy, with a low around 61. South wind 5 to 10 mph.
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
- May 25 to Jun 1, 2026
- Latest sync
- May 26, 2026 12:25 AM 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 83 degrees F.
Thursday Night is the coolest period ahead with temperatures near 51 degrees F.
The strongest winds are forecast for Wednesday Night at about 10 to 15 mph NNE.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- May 26, 2026 12:25 AM CDT
- Coverage
- 7 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
Mostly sunny, with a high near 83. South wind 5 to 10 mph.
Partly cloudy, with a low around 61. Southwest wind around 5 mph, with gusts as high as 15 mph.
Mostly sunny, with a high near 70. North northeast wind 5 to 10 mph.
A slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 53. North northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Sunny, with a high near 66.
Mostly clear, with a low around 51.
Sunny, with a high near 68.
Mostly clear, with a low around 54.
Sunny, with a high near 65.
Mostly clear, with a low around 53.
Sunny, with a high near 65.
Mostly clear, with a low around 54.
Sunny, with a high near 70.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tonight
May 25
|
Partly Cloudy
|
61°F |
5 to 10 mph
S
|
|
Tuesday
May 26
|
Mostly Sunny
|
83°F |
5 to 10 mph
S
|
|
Tuesday Night
May 26
|
Partly Cloudy
|
61°F |
5 mph
SW
|
|
Wednesday
May 27
|
Mostly Sunny
|
70°F |
5 to 10 mph
NNE
|
|
Wednesday Night
May 27
|
Slight Chance Showers And Thunderstorms
|
53°F |
10 to 15 mph
NNE
|
|
Thursday
May 28
|
Sunny
|
66°F |
10 to 15 mph
NNE
|
|
Thursday Night
May 28
|
Mostly Clear
|
51°F |
5 to 10 mph
NNE
|
|
Friday
May 29
|
Sunny
|
68°F |
5 mph
NE
|
|
Friday Night
May 29
|
Mostly Clear
|
54°F |
5 mph
NE
|
|
Saturday
May 30
|
Sunny
|
65°F |
5 to 15 mph
NE
|
|
Saturday Night
May 30
|
Mostly Clear
|
53°F |
5 to 15 mph
NE
|
|
Sunday
May 31
|
Sunny
|
65°F |
5 to 15 mph
NE
|
|
Sunday Night
May 31
|
Mostly Clear
|
54°F |
5 to 10 mph
NNE
|
|
Monday
Jun 1
|
Sunny
|
70°F |
5 to 10 mph
NNE
|
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.
