Wheaton, IL Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Wheaton, IL in one place.
Mostly sunny, with a high near 77. Northwest wind 0 to 5 mph.
Local Weather Overview
This forecast page for Wheaton, 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: Aug 23, 2026 4:18 PM CDT.
The active forecast window currently covers Aug 24 to Aug 29, 2026 for Wheaton, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 24 to Aug 29, 2026
- Latest sync
- Aug 23, 2026 4:18 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Wheaton
Wednesday looks like the warmest upcoming period in Wheaton at 83 degrees F.
Monday Night is the coolest period ahead with temperatures near 57 degrees F.
The strongest winds are forecast for Wednesday at about 10 to 15 mph SW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 23, 2026 4:18 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
Mostly clear, with a low around 57. East southeast wind 0 to 5 mph.
Sunny, with a high near 80. South southwest wind 0 to 5 mph.
Mostly cloudy, with a low around 64.
A chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 83.
A chance of showers and thunderstorms before 1am. Mostly clear, with a low around 63.
Sunny, with a high near 81.
Mostly clear, with a low around 62.
Sunny, with a high near 81.
Partly cloudy, with a low around 63.
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 80.
A slight chance of rain showers before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 24
|
Mostly Sunny
|
77°F |
0 to 5 mph
NW
|
|
Monday Night
Aug 24
|
Mostly Clear
|
57°F |
0 to 5 mph
ESE
|
|
Tuesday
Aug 25
|
Sunny
|
80°F |
0 to 5 mph
SSW
|
|
Tuesday Night
Aug 25
|
Mostly Cloudy
|
64°F |
5 mph
S
|
|
Wednesday
Aug 26
|
Chance Showers And Thunderstorms
|
83°F |
10 to 15 mph
SW
|
|
Wednesday Night
Aug 26
|
Chance Showers And Thunderstorms
|
63°F |
5 to 10 mph
W
|
|
Thursday
Aug 27
|
Sunny
|
81°F |
5 to 10 mph
NW
|
|
Thursday Night
Aug 27
|
Mostly Clear
|
62°F |
0 to 5 mph
WNW
|
|
Friday
Aug 28
|
Sunny
|
81°F |
0 to 5 mph
NNW
|
|
Friday Night
Aug 28
|
Partly Cloudy
|
63°F |
0 to 5 mph
E
|
|
Saturday
Aug 29
|
Mostly Sunny then Slight Chance Rain Showers
|
80°F |
0 to 5 mph
S
|
|
Saturday Night
Aug 29
|
Chance Showers And Thunderstorms
|
66°F |
5 to 10 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Wheaton.
