Harris, IL Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Harris, IL in one place.
A chance of showers and thunderstorms before 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 79. North wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Local Weather Overview
This forecast page for Harris, 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 13, 2026 7:24 PM CDT.
The active forecast window currently covers Oct 14 to Oct 19, 2026 for Harris, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 14 to Oct 19, 2026
- Latest sync
- Oct 13, 2026 7:24 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Harris
Wednesday looks like the warmest upcoming period in Harris at 79 degrees F.
Saturday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Friday at about 20 to 23 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 7:24 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KIND
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 63. Northeast wind around 7 mph. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of rain showers before 7am, then showers and thunderstorms. Mostly cloudy, with a high near 79. Southeast wind 6 to 9 mph, with gusts as high as 16 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms. Mostly cloudy, with a low around 49. West wind 9 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
A slight chance of rain showers before 7am. Partly sunny, with a high near 60. Northwest wind 20 to 23 mph, with gusts as high as 35 mph. New rainfall amounts less than a tenth of an inch possible.
Areas of frost after 5am. Mostly clear, with a low around 36.
Areas of frost before 8am. Sunny, with a high near 61.
Clear, with a low around 35.
Sunny, with a high near 68.
Partly cloudy, with a low around 44.
Mostly sunny, with a high near 72.
Mostly cloudy, with a low around 48.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Oct 14
|
Chance Showers And Thunderstorms
|
79°F |
5 mph
N
|
|
Wednesday Night
Oct 14
|
Slight Chance Showers And Thunderstorms then Mostly Cloudy
|
63°F |
7 mph
NE
|
|
Thursday
Oct 15
|
Showers And Thunderstorms
|
79°F |
6 to 9 mph
SE
|
|
Thursday Night
Oct 15
|
Showers And Thunderstorms
|
49°F |
9 to 20 mph
W
|
|
Friday
Oct 16
|
Slight Chance Rain Showers then Partly Sunny
|
60°F |
20 to 23 mph
NW
|
|
Friday Night
Oct 16
|
Mostly Clear then Areas Of Frost
|
36°F |
5 to 20 mph
NNW
|
|
Saturday
Oct 17
|
Areas Of Frost then Sunny
|
61°F |
5 mph
ENE
|
|
Saturday Night
Oct 17
|
Clear
|
35°F |
3 mph
SSE
|
|
Sunday
Oct 18
|
Sunny
|
68°F |
3 to 9 mph
S
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
44°F |
7 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
72°F |
8 mph
SSW
|
|
Monday Night
Oct 19
|
Mostly Cloudy
|
48°F |
3 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Harris.