Mattoon, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Mattoon, IL in one place.
A chance of rain showers between 7am and 1pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 78. East southeast wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Mattoon, 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: May 24, 2026 3:10 AM CDT.
The active forecast window currently covers May 26 to May 30, 2026 for Mattoon, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 26 to May 30, 2026
- Latest sync
- May 24, 2026 3:10 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Mattoon
Thursday looks like the warmest upcoming period in Mattoon at 81 degrees F.
Friday Night is the coolest period ahead with temperatures near 57 degrees F.
The strongest winds are forecast for Friday at about 12 mph ENE.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- May 24, 2026 3:10 AM CDT
- Coverage
- 5 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
Showers and thunderstorms likely. Mostly cloudy, with a low around 66. Southeast wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms likely. Mostly cloudy, with a high near 79. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
A slight chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 77.
A chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 57.
Mostly sunny, with a high near 75.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
May 26
|
Showers And Thunderstorms Likely
|
78°F |
8 mph
ESE
|
|
Tuesday Night
May 26
|
Showers And Thunderstorms Likely
|
66°F |
8 mph
SE
|
|
Wednesday
May 27
|
Showers And Thunderstorms Likely
|
79°F |
7 mph
SSE
|
|
Wednesday Night
May 27
|
Showers And Thunderstorms Likely
|
66°F |
6 mph
ESE
|
|
Thursday
May 28
|
Chance Showers And Thunderstorms
|
81°F |
7 mph
E
|
|
Thursday Night
May 28
|
Chance Showers And Thunderstorms
|
63°F |
8 mph
ENE
|
|
Friday
May 29
|
Chance Showers And Thunderstorms
|
77°F |
12 mph
ENE
|
|
Friday Night
May 29
|
Chance Showers And Thunderstorms
|
57°F |
10 mph
ENE
|
|
Saturday
May 30
|
Mostly Sunny
|
75°F |
12 mph
ENE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Mattoon.