Tennessee, IL Weather Forecast
Local 7-day forecast
Patchy Smoke
Track current conditions, temperature changes, wind, and the full daily outlook for Tennessee, IL in one place.
Patchy smoke. Sunny, with a high near 86. East wind around 5 mph.
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: Jul 19, 2026 9:33 AM CDT.
The active forecast window currently covers Jul 19 to Jul 25, 2026 for Tennessee, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 19 to Jul 25, 2026
- Latest sync
- Jul 19, 2026 9:33 AM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Tennessee
Monday looks like the warmest upcoming period in Tennessee at 90 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 61 degrees F.
The strongest winds are forecast for Tuesday at about 5 to 15 mph NW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 19, 2026 9:33 AM CDT
- Coverage
- 7 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
Patchy smoke. Mostly clear, with a low around 67. East wind 0 to 5 mph.
Patchy smoke before 7am. Sunny, with a high near 90. South wind around 5 mph.
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. Southwest wind around 5 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7am. Sunny, with a high near 89. Chance of precipitation is 50%.
Mostly clear, with a low around 66.
Sunny, with a high near 82.
Mostly clear, with a low around 61.
Sunny, with a high near 82.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63.
A slight chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 65.
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 87.
Mostly clear, with a low around 68.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 19
|
Patchy Smoke
|
86°F |
5 mph
E
|
|
Tonight
Jul 19
|
Patchy Smoke
|
67°F |
0 to 5 mph
E
|
|
Monday
Jul 20
|
Patchy Smoke then Sunny
|
90°F |
5 mph
S
|
|
Monday Night
Jul 20
|
Partly Cloudy then Chance Showers And Thunderstorms
|
75°F |
5 mph
SW
|
|
Tuesday
Jul 21
|
Chance Showers And Thunderstorms then Sunny
|
89°F |
5 to 15 mph
NW
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
66°F |
5 to 15 mph
N
|
|
Wednesday
Jul 22
|
Sunny
|
82°F |
5 to 10 mph
N
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
61°F |
0 to 10 mph
NE
|
|
Thursday
Jul 23
|
Sunny
|
82°F |
0 to 5 mph
SE
|
|
Thursday Night
Jul 23
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
63°F |
0 to 5 mph
SE
|
|
Friday
Jul 24
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
82°F |
5 to 10 mph
SE
|
|
Friday Night
Jul 24
|
Slight Chance Showers And Thunderstorms
|
65°F |
5 to 10 mph
SE
|
|
Saturday
Jul 25
|
Slight Chance Showers And Thunderstorms
|
87°F |
5 to 10 mph
SE
|
|
Saturday Night
Jul 25
|
Mostly Clear
|
68°F |
0 to 5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Tennessee.