Tonica, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Tonica, IL in one place.
Sunny, with a high near 54.
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: Apr 16, 2026 1:07 PM CDT.
The active forecast window currently covers Apr 19 to Apr 22, 2026 for Tonica, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 19 to Apr 22, 2026
- Latest sync
- Apr 16, 2026 1:07 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Tonica
Tuesday looks like the warmest upcoming period in Tonica at 74 degrees F.
Sunday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Sunday at about 10 to 20 mph WNW.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Apr 16, 2026 1:07 PM CDT
- Coverage
- 4 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
Areas of frost after 3am. Partly cloudy, with a low around 35.
Areas of frost before 8am. Sunny, with a high near 63.
Mostly clear, with a low around 48.
Mostly sunny, with a high near 74.
Partly cloudy, with a low around 52.
Mostly sunny, with a high near 72.
A chance of rain showers after 7pm. Partly cloudy, with a low around 50.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Apr 19
|
Sunny
|
54°F |
10 to 20 mph
WNW
|
|
Sunday Night
Apr 19
|
Partly Cloudy then Areas Of Frost
|
35°F |
5 to 15 mph
ENE
|
|
Monday
Apr 20
|
Areas Of Frost then Sunny
|
63°F |
5 to 15 mph
SSE
|
|
Monday Night
Apr 20
|
Mostly Clear
|
48°F |
10 to 15 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
74°F |
15 to 20 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy
|
52°F |
10 to 15 mph
SW
|
|
Wednesday
Apr 22
|
Mostly Sunny
|
72°F |
10 mph
SW
|
|
Wednesday Night
Apr 22
|
Chance Rain Showers
|
50°F |
10 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Tonica.