Harness, IL Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Harness, IL in one place.
Mostly sunny. High near 51, with temperatures falling to around 46 in the afternoon. North northwest wind 8 to 13 mph, with gusts as high as 21 mph.
Local Weather Overview
This forecast page for Harness, 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: Nov 5, 2026 10:14 AM CST.
The active forecast window currently covers Nov 6 to Nov 11, 2026 for Harness, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 6 to Nov 11, 2026
- Latest sync
- Nov 5, 2026 10:14 AM CST
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Harness
Tuesday looks like the warmest upcoming period in Harness at 66 degrees F.
Friday Night is the coolest period ahead with temperatures near 29 degrees F.
The strongest winds are forecast for Friday at about 8 to 13 mph NNW.
The forecast from Nov 6 through Nov 11 stays mostly dry.
Forecast Details
- Last updated
- Nov 5, 2026 10:14 AM CST
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- 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 29. North northwest wind 1 to 6 mph.
Mostly sunny, with a high near 53. Northwest wind 1 to 5 mph.
Mostly clear, with a low around 31. West wind around 2 mph.
Sunny, with a high near 60. West wind 2 to 7 mph.
Clear, with a low around 34.
Sunny, with a high near 65.
Clear, with a low around 39.
Sunny, with a high near 66.
Mostly clear, with a low around 38.
Mostly sunny, with a high near 63.
Mostly clear, with a low around 40.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Nov 6
|
Mostly Sunny
|
51°F |
8 to 13 mph
NNW
|
|
Friday Night
Nov 6
|
Mostly Clear
|
29°F |
1 to 6 mph
NNW
|
|
Saturday
Nov 7
|
Mostly Sunny
|
53°F |
1 to 5 mph
NW
|
|
Saturday Night
Nov 7
|
Mostly Clear
|
31°F |
2 mph
W
|
|
Sunday
Nov 8
|
Sunny
|
60°F |
2 to 7 mph
W
|
|
Sunday Night
Nov 8
|
Clear
|
34°F |
3 mph
W
|
|
Monday
Nov 9
|
Sunny
|
65°F |
1 to 8 mph
SSW
|
|
Monday Night
Nov 9
|
Clear
|
39°F |
2 to 7 mph
SW
|
|
Tuesday
Nov 10
|
Sunny
|
66°F |
5 mph
W
|
|
Tuesday Night
Nov 10
|
Mostly Clear
|
38°F |
2 mph
NNW
|
|
Veterans Day
Nov 11
|
Mostly Sunny
|
63°F |
1 to 6 mph
NNW
|
|
Wednesday Night
Nov 11
|
Mostly Clear
|
40°F |
3 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Harness.