Waukegan, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Waukegan, IL in one place.
Sunny, with a high near 76. South wind 0 to 10 mph.
Local Weather Overview
This forecast page for Waukegan, 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: May 24, 2026 3:12 AM CDT.
The active forecast window currently covers May 25 to May 30, 2026 for Waukegan, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 25 to May 30, 2026
- Latest sync
- May 24, 2026 3:12 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Waukegan
Tuesday looks like the warmest upcoming period in Waukegan at 78 degrees F.
Friday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Thursday at about 5 to 15 mph NNE.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- May 24, 2026 3:12 AM 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 61. South wind 0 to 5 mph, with gusts as high as 15 mph.
Mostly sunny, with a high near 78.
A slight chance of rain showers after 1am. Mostly cloudy, with a low around 60.
A chance of rain showers. Partly sunny, with a high near 70.
A slight chance of rain showers. Mostly cloudy, with a low around 57.
A slight chance of rain showers before 7am. Partly sunny, with a high near 68.
Mostly cloudy, with a low around 54.
Mostly sunny, with a high near 69.
Partly cloudy, with a low around 53.
Mostly sunny, with a high near 70.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Memorial Day
May 25
|
Sunny
|
76°F |
0 to 10 mph
S
|
|
Monday Night
May 25
|
Partly Cloudy
|
61°F |
0 to 5 mph
S
|
|
Tuesday
May 26
|
Mostly Sunny
|
78°F |
0 to 5 mph
SE
|
|
Tuesday Night
May 26
|
Mostly Cloudy then Slight Chance Rain Showers
|
60°F |
0 to 5 mph
E
|
|
Wednesday
May 27
|
Chance Rain Showers
|
70°F |
0 to 10 mph
ENE
|
|
Wednesday Night
May 27
|
Slight Chance Rain Showers
|
57°F |
5 to 10 mph
NE
|
|
Thursday
May 28
|
Slight Chance Rain Showers then Partly Sunny
|
68°F |
5 to 15 mph
NNE
|
|
Thursday Night
May 28
|
Mostly Cloudy
|
54°F |
10 to 15 mph
NE
|
|
Friday
May 29
|
Mostly Sunny
|
69°F |
10 to 15 mph
NE
|
|
Friday Night
May 29
|
Partly Cloudy
|
53°F |
5 to 15 mph
NE
|
|
Saturday
May 30
|
Mostly Sunny
|
70°F |
5 to 15 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Waukegan.
