Waynesville, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Waynesville, IL in one place.
Showers and thunderstorms likely after 7am. Mostly sunny, with a high near 88. Southwest wind 5 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Local Weather Overview
This forecast page for Waynesville, 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: Jul 15, 2026 2:41 AM CDT.
The active forecast window currently covers Jul 17 to Jul 21, 2026 for Waynesville, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 17 to Jul 21, 2026
- Latest sync
- Jul 15, 2026 2:41 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Waynesville
Saturday looks like the warmest upcoming period in Waynesville at 90 degrees F.
Sunday Night is the coolest period ahead with temperatures near 70 degrees F.
The strongest winds are forecast for Tuesday at about 9 to 15 mph WNW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 15, 2026 2:41 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms likely before 1am. Partly cloudy, with a low around 72. Southwest wind 5 to 9 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Mostly sunny, with a high near 90.
Mostly clear, with a low around 71.
Sunny, with a high near 88.
Mostly clear, with a low around 70.
A slight chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 89.
A slight chance of rain showers before 1am. Partly cloudy, with a low around 70.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 17
|
Showers And Thunderstorms Likely
|
88°F |
5 to 9 mph
SW
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms Likely
|
72°F |
5 to 9 mph
SW
|
|
Saturday
Jul 18
|
Mostly Sunny
|
90°F |
8 to 14 mph
WSW
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
71°F |
8 to 12 mph
W
|
|
Sunday
Jul 19
|
Sunny
|
88°F |
9 mph
W
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
70°F |
6 to 9 mph
SSW
|
|
Monday
Jul 20
|
Slight Chance Showers And Thunderstorms
|
89°F |
8 to 14 mph
SW
|
|
Monday Night
Jul 20
|
Slight Chance Rain Showers
|
70°F |
8 to 12 mph
WSW
|
|
Tuesday
Jul 21
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
86°F |
9 to 15 mph
WNW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Waynesville.