Tennessee, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Tennessee, IL in one place.
Sunny, with a high near 58.
Local Weather Overview
This forecast page for Tennessee, 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 6:44 AM CDT.
The active forecast window currently covers Apr 19 to Apr 22, 2026 for Tennessee, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 19 to Apr 22, 2026
- Latest sync
- Apr 16, 2026 6:44 AM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Tennessee
Wednesday looks like the warmest upcoming period in Tennessee at 75 degrees F.
Sunday Night is the coolest period ahead with temperatures near 38 degrees F.
The strongest winds are forecast for Sunday at about 5 to 15 mph NW.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Apr 16, 2026 6:44 AM CDT
- Coverage
- 4 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 38.
Sunny, with a high near 67.
Mostly clear, with a low around 50.
Mostly sunny, with a high near 74.
Mostly clear, with a low around 52.
A slight chance of rain showers after 7am. Sunny, with a high near 75.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Apr 19
|
Sunny
|
58°F |
5 to 15 mph
NW
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
38°F |
5 to 10 mph
E
|
|
Monday
Apr 20
|
Sunny
|
67°F |
5 to 15 mph
S
|
|
Monday Night
Apr 20
|
Mostly Clear
|
50°F |
10 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
74°F |
10 to 15 mph
SW
|
|
Tuesday Night
Apr 21
|
Mostly Clear
|
52°F |
10 mph
SW
|
|
Wednesday
Apr 22
|
Slight Chance Rain Showers
|
75°F |
10 to 15 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Tennessee.