Naperville, IL Weather Forecast
Local 7-day forecast
Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Naperville, IL in one place.
Mostly cloudy. High near 67, with temperatures falling to around 65 in the afternoon. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Local Weather Overview
This forecast page for Naperville, 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: Sep 22, 2026 9:45 AM CDT.
The active forecast window currently covers Sep 23 to Sep 28, 2026 for Naperville, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 23 to Sep 28, 2026
- Latest sync
- Sep 22, 2026 9:45 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Naperville
Monday looks like the warmest upcoming period in Naperville at 75 degrees F.
Friday Night is the coolest period ahead with temperatures near 50 degrees F.
The strongest winds are forecast for Wednesday at about 10 to 15 mph NE.
The forecast from Sep 23 through Sep 28 stays mostly dry.
Forecast Details
- Last updated
- Sep 22, 2026 9:45 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
Mostly cloudy, with a low around 54. East northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Partly sunny, with a high near 68. East northeast wind 5 to 10 mph.
Mostly cloudy, with a low around 53.
Mostly sunny, with a high near 68.
Partly cloudy, with a low around 50.
Partly sunny, with a high near 68.
Mostly cloudy, with a low around 52.
Mostly cloudy, with a high near 71.
Mostly cloudy, with a low around 55.
Mostly sunny, with a high near 75.
Partly cloudy, with a low around 58.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 23
|
Mostly Cloudy
|
67°F |
10 to 15 mph
NE
|
|
Wednesday Night
Sep 23
|
Mostly Cloudy
|
54°F |
5 to 10 mph
ENE
|
|
Thursday
Sep 24
|
Partly Sunny
|
68°F |
5 to 10 mph
ENE
|
|
Thursday Night
Sep 24
|
Mostly Cloudy
|
53°F |
0 to 5 mph
ENE
|
|
Friday
Sep 25
|
Mostly Sunny
|
68°F |
0 to 5 mph
E
|
|
Friday Night
Sep 25
|
Partly Cloudy
|
50°F |
0 to 5 mph
E
|
|
Saturday
Sep 26
|
Partly Sunny
|
68°F |
0 to 5 mph
SE
|
|
Saturday Night
Sep 26
|
Mostly Cloudy
|
52°F |
0 to 5 mph
SE
|
|
Sunday
Sep 27
|
Mostly Cloudy
|
71°F |
0 to 5 mph
SSE
|
|
Sunday Night
Sep 27
|
Mostly Cloudy
|
55°F |
0 to 5 mph
SE
|
|
Monday
Sep 28
|
Mostly Sunny
|
75°F |
0 to 5 mph
SSE
|
|
Monday Night
Sep 28
|
Partly Cloudy
|
58°F |
5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Naperville.
