Knox, IL Weather Forecast
Local 7-day forecast
Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Knox, IL in one place.
A chance of rain showers between 11am and 5pm. Partly sunny, with a high near 53. Northwest wind 17 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Knox, 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: Oct 15, 2026 3:15 PM CDT.
The active forecast window currently covers Oct 16 to Oct 21, 2026 for Knox, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 16 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 3:15 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Knox
Wednesday looks like the warmest upcoming period in Knox at 74 degrees F.
Friday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Friday at about 17 to 22 mph NW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 3:15 PM CDT
- Coverage
- 6 days
- 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
Areas of frost after 3am. Mostly clear, with a low around 34. North wind 2 to 18 mph, with gusts as high as 31 mph. New rainfall amounts less than a tenth of an inch possible.
Areas of frost before 9am. Sunny, with a high near 57. North northwest wind 0 to 3 mph.
Areas of frost after 5am. Clear, with a low around 36. South southwest wind around 5 mph.
Areas of frost before 8am. Sunny, with a high near 66. South southwest wind 5 to 13 mph, with gusts as high as 20 mph.
Mostly clear, with a low around 41.
Mostly sunny, with a high near 70.
Partly cloudy, with a low around 43.
Mostly sunny, with a high near 72.
Mostly clear, with a low around 46.
Sunny, with a high near 74.
Partly cloudy, with a low around 51.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Oct 16
|
Chance Rain Showers
|
53°F |
17 to 22 mph
NW
|
|
Friday Night
Oct 16
|
Mostly Clear then Areas Of Frost
|
34°F |
2 to 18 mph
N
|
|
Saturday
Oct 17
|
Areas Of Frost then Sunny
|
57°F |
0 to 3 mph
NNW
|
|
Saturday Night
Oct 17
|
Clear then Areas Of Frost
|
36°F |
5 mph
SSW
|
|
Sunday
Oct 18
|
Areas Of Frost then Sunny
|
66°F |
5 to 13 mph
SSW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
41°F |
2 to 7 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
70°F |
1 to 5 mph
SSW
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
43°F |
1 mph
W
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
72°F |
0 to 3 mph
SE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
46°F |
2 mph
SE
|
|
Wednesday
Oct 21
|
Sunny
|
74°F |
2 to 8 mph
SSE
|
|
Wednesday Night
Oct 21
|
Partly Cloudy
|
51°F |
6 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Knox.
