Tonica, IL Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Tonica, IL in one place.
Partly sunny, with a high near 79. South southeast wind 0 to 5 mph, with gusts as high as 10 mph.
Local Weather Overview
This forecast page for Tonica, 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 23, 2026 7:18 PM CDT.
The active forecast window currently covers Jul 24 to Jul 29, 2026 for Tonica, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 24 to Jul 29, 2026
- Latest sync
- Jul 23, 2026 7:18 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Tonica
Monday looks like the warmest upcoming period in Tonica at 92 degrees F.
Friday Night is the coolest period ahead with temperatures near 64 degrees F.
The strongest winds are forecast for Monday at about 10 to 15 mph SW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 23, 2026 7:18 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
A slight chance of rain showers between 1am and 4am, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 64. South wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 83. South wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Partly cloudy, with a low around 70.
Mostly sunny, with a high near 90.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74.
A chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 92.
Mostly clear, with a low around 72.
Sunny, with a high near 89.
Partly cloudy, with a low around 67.
Sunny, with a high near 86.
Mostly clear, with a low around 66.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 24
|
Partly Sunny
|
79°F |
0 to 5 mph
SSE
|
|
Friday Night
Jul 24
|
Mostly Cloudy then Slight Chance Showers And Thunderstorms
|
64°F |
5 mph
S
|
|
Saturday
Jul 25
|
Slight Chance Showers And Thunderstorms
|
83°F |
5 mph
S
|
|
Saturday Night
Jul 25
|
Partly Cloudy
|
70°F |
5 mph
SW
|
|
Sunday
Jul 26
|
Mostly Sunny
|
90°F |
5 mph
SW
|
|
Sunday Night
Jul 26
|
Partly Cloudy then Chance Showers And Thunderstorms
|
74°F |
5 to 10 mph
SSW
|
|
Monday
Jul 27
|
Chance Showers And Thunderstorms
|
92°F |
10 to 15 mph
SW
|
|
Monday Night
Jul 27
|
Mostly Clear
|
72°F |
5 to 10 mph
WNW
|
|
Tuesday
Jul 28
|
Sunny
|
89°F |
5 to 10 mph
N
|
|
Tuesday Night
Jul 28
|
Partly Cloudy
|
67°F |
5 mph
NE
|
|
Wednesday
Jul 29
|
Sunny
|
86°F |
5 mph
ENE
|
|
Wednesday Night
Jul 29
|
Mostly Clear
|
66°F |
0 to 5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Tonica.