Trenton, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Trenton, IL in one place.
Showers and thunderstorms. Partly sunny, with a high near 89. West wind around 6 mph. Chance of precipitation is 80%.
Local Weather Overview
This forecast page for Trenton, 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 8, 2026 11:59 AM CDT.
The active forecast window currently covers Jul 10 to Jul 14, 2026 for Trenton, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 10 to Jul 14, 2026
- Latest sync
- Jul 8, 2026 11:59 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Trenton
Tuesday looks like the warmest upcoming period in Trenton at 91 degrees F.
Sunday Night is the coolest period ahead with temperatures near 70 degrees F.
The strongest winds are forecast for Sunday at about 2 to 7 mph NE.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 8, 2026 11:59 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms likely. Mostly cloudy, with a low around 72. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a high near 87. Chance of precipitation is 60%.
Showers and thunderstorms likely. Partly cloudy, with a low around 71. Chance of precipitation is 60%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Sunny, with a high near 89.
Mostly clear, with a low around 71.
Sunny, with a high near 91.
Mostly clear, with a low around 72.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 10
|
Showers And Thunderstorms
|
89°F |
6 mph
W
|
|
Friday Night
Jul 10
|
Showers And Thunderstorms Likely
|
72°F |
0 to 6 mph
NW
|
|
Saturday
Jul 11
|
Showers And Thunderstorms Likely
|
87°F |
2 to 6 mph
W
|
|
Saturday Night
Jul 11
|
Showers And Thunderstorms Likely
|
71°F |
1 to 6 mph
N
|
|
Sunday
Jul 12
|
Chance Showers And Thunderstorms
|
87°F |
2 to 7 mph
NE
|
|
Sunday Night
Jul 12
|
Chance Showers And Thunderstorms then Partly Cloudy
|
70°F |
1 to 7 mph
NE
|
|
Monday
Jul 13
|
Sunny
|
89°F |
2 to 7 mph
NE
|
|
Monday Night
Jul 13
|
Mostly Clear
|
71°F |
1 to 7 mph
NE
|
|
Tuesday
Jul 14
|
Sunny
|
91°F |
5 mph
NE
|
|
Tuesday Night
Jul 14
|
Mostly Clear
|
72°F |
1 to 5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Trenton.