Knox County, IL Weather Forecast
County weather hub
Sunny then Slight Chance Showers And Thunderstorms
Compare major city weather across Knox County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 89.
County Weather Overview
This county weather page brings together forecast coverage for Knox County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 5 of 5 mapped cities in Knox County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 17, 2026
- Latest sync
- Jul 11, 2026 7:31 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Knox County
Friday looks like the warmest upcoming period in Knox County at 89 degrees F.
Friday is the coolest period ahead with temperatures near 89 degrees F.
The strongest winds are forecast for Friday at about 3 to 8 mph SW.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- Jul 11, 2026 7:31 AM CDT
- Coverage
- 1 day
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KDVN
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 17
|
Sunny then Slight Chance Showers And Thunderstorms
|
89°F |
3 to 8 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across Knox County.
Coverage
Forecast coverage currently spans 5 of 5 mapped cities in Knox County.
Largest mapped city population in this region: 29,803.
