DuPage County, IL Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across DuPage County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 77. Northwest wind 0 to 5 mph.
County Weather Overview
This county weather page brings together forecast coverage for DuPage County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 12 of 12 mapped cities in DuPage County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 24 to Aug 28, 2026
- Latest sync
- Aug 22, 2026 8:39 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in DuPage County
Wednesday looks like the warmest upcoming period in DuPage County at 81 degrees F.
Monday Night is the coolest period ahead with temperatures near 59 degrees F.
The strongest winds are forecast for Wednesday at about 5 to 10 mph SW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 22, 2026 8:39 AM CDT
- Coverage
- 5 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 59.
Mostly sunny, with a high near 79.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 63.
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 81.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 64.
Sunny, with a high near 80.
Mostly clear, with a low around 64.
Mostly sunny, with a high near 81.
Partly cloudy, with a low around 64.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 24
|
Mostly Sunny
|
77°F |
0 to 5 mph
NW
|
|
Monday Night
Aug 24
|
Partly Cloudy
|
59°F |
0 to 5 mph
E
|
|
Tuesday
Aug 25
|
Mostly Sunny
|
79°F |
0 to 5 mph
S
|
|
Tuesday Night
Aug 25
|
Partly Cloudy then Slight Chance Rain Showers
|
63°F |
5 mph
SSW
|
|
Wednesday
Aug 26
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
81°F |
5 to 10 mph
SW
|
|
Wednesday Night
Aug 26
|
Chance Showers And Thunderstorms
|
64°F |
5 to 10 mph
WSW
|
|
Thursday
Aug 27
|
Sunny
|
80°F |
5 mph
NW
|
|
Thursday Night
Aug 27
|
Mostly Clear
|
64°F |
0 to 5 mph
N
|
|
Friday
Aug 28
|
Mostly Sunny
|
81°F |
5 mph
NE
|
|
Friday Night
Aug 28
|
Partly Cloudy
|
64°F |
5 mph
E
|
Major City Forecasts
Live forecast snapshots for major cities across DuPage County.
Coverage
Forecast coverage currently spans 12 of 12 mapped cities in DuPage County.
Largest mapped city population in this region: 147,986.
