Mattoon, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Mattoon, IL in one place.
Sunny, with a high near 91. Southwest wind around 9 mph.
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: Oct 13, 2026 7:07 PM CDT.
The active forecast window currently covers Oct 13 to Oct 19, 2026 for Mattoon, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 13 to Oct 19, 2026
- Latest sync
- Oct 13, 2026 7:07 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Mattoon
This Afternoon looks like the warmest upcoming period in Mattoon at 91 degrees F.
Friday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Thursday Night at about 8 to 21 mph W.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 7:07 PM CDT
- 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
A slight chance of showers and thunderstorms between 2am and 5am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 70. Southwest wind 5 to 8 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Showers and thunderstorms likely before 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 79. North northeast wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Northeast wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
Rain showers likely before 7am, then showers and thunderstorms. Mostly cloudy, with a high near 80. South southeast wind 6 to 9 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and thunderstorms likely. Mostly cloudy, with a low around 48. West wind 8 to 21 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 60. Northwest wind around 21 mph, with gusts as high as 33 mph. New rainfall amounts less than a tenth of an inch possible.
Mostly clear, with a low around 37.
Sunny, with a high near 62.
Clear, with a low around 37.
Sunny, with a high near 69.
Partly cloudy, with a low around 45.
Mostly sunny, with a high near 72.
Mostly cloudy, with a low around 50.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 13
|
Sunny
|
91°F |
9 mph
SW
|
|
Tonight
Oct 13
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
70°F |
5 to 8 mph
SW
|
|
Wednesday
Oct 14
|
Showers And Thunderstorms Likely
|
79°F |
5 mph
NNE
|
|
Wednesday Night
Oct 14
|
Chance Showers And Thunderstorms
|
63°F |
7 mph
NE
|
|
Thursday
Oct 15
|
Showers And Thunderstorms
|
80°F |
6 to 9 mph
SSE
|
|
Thursday Night
Oct 15
|
Showers And Thunderstorms Likely
|
48°F |
8 to 21 mph
W
|
|
Friday
Oct 16
|
Slight Chance Rain Showers then Mostly Sunny
|
60°F |
21 mph
NW
|
|
Friday Night
Oct 16
|
Mostly Clear
|
37°F |
5 to 16 mph
N
|
|
Saturday
Oct 17
|
Sunny
|
62°F |
5 mph
ENE
|
|
Saturday Night
Oct 17
|
Clear
|
37°F |
1 to 5 mph
SSE
|
|
Sunday
Oct 18
|
Sunny
|
69°F |
5 to 9 mph
S
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
45°F |
6 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
72°F |
8 mph
SSW
|
|
Monday Night
Oct 19
|
Mostly Cloudy
|
50°F |
3 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Mattoon.