Grayslake, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Grayslake, IL in one place.
Sunny. High near 84, with temperatures falling to around 81 in the afternoon. North wind around 5 mph, with gusts as high as 15 mph.
Local Weather Overview
This forecast page for Grayslake, 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 6, 2026 2:07 PM CDT.
The active forecast window currently covers Jun 6 to Jun 12, 2026 for Grayslake, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 6 to Jun 12, 2026
- Latest sync
- Jun 6, 2026 2:07 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Grayslake
Thursday looks like the warmest upcoming period in Grayslake at 94 degrees F.
Tonight is the coolest period ahead with temperatures near 61 degrees F.
The strongest winds are forecast for Monday at about 10 to 15 mph SE.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 6, 2026 2:07 PM CDT
- Coverage
- 7 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
Partly cloudy, with a low around 61. East wind around 5 mph, with gusts as high as 10 mph.
Partly sunny, with a high near 79. East wind 5 to 10 mph, with gusts as high as 20 mph.
A slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. East wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
A chance of showers and thunderstorms before 1pm, then showers and thunderstorms. Mostly cloudy, with a high near 83. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 80%.
Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms. Partly sunny, with a high near 86.
A chance of showers and thunderstorms. Partly cloudy, with a low around 68.
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 93.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73.
A slight chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 94.
A chance of showers and thunderstorms before 1am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 71.
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 91.
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Jun 6
|
Sunny
|
84°F |
5 mph
N
|
|
Tonight
Jun 6
|
Partly Cloudy
|
61°F |
5 mph
E
|
|
Sunday
Jun 7
|
Partly Sunny
|
79°F |
5 to 10 mph
E
|
|
Sunday Night
Jun 7
|
Mostly Cloudy then Slight Chance Showers And Thunderstorms
|
63°F |
5 to 10 mph
E
|
|
Monday
Jun 8
|
Chance Showers And Thunderstorms
|
83°F |
10 to 15 mph
SE
|
|
Monday Night
Jun 8
|
Showers And Thunderstorms
|
67°F |
5 to 10 mph
S
|
|
Tuesday
Jun 9
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
86°F |
5 to 10 mph
SW
|
|
Tuesday Night
Jun 9
|
Chance Showers And Thunderstorms
|
68°F |
0 to 5 mph
SSW
|
|
Wednesday
Jun 10
|
Chance Showers And Thunderstorms
|
93°F |
0 to 10 mph
SSW
|
|
Wednesday Night
Jun 10
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
73°F |
5 to 10 mph
SSW
|
|
Thursday
Jun 11
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
94°F |
5 to 15 mph
SW
|
|
Thursday Night
Jun 11
|
Chance Showers And Thunderstorms
|
71°F |
5 to 10 mph
SW
|
|
Friday
Jun 12
|
Slight Chance Showers And Thunderstorms
|
91°F |
5 to 10 mph
WSW
|
|
Friday Night
Jun 12
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
67°F |
5 to 10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grayslake.
