Mattoon, WI Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Mattoon, WI in one place.
Sunny, with a high near 66.
Local Weather Overview
This forecast page for Mattoon, WI 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: Apr 19, 2026 12:06 AM CDT.
The active forecast window currently covers Apr 22 to Apr 25, 2026 for Mattoon, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 22 to Apr 25, 2026
- Latest sync
- Apr 19, 2026 12:06 AM CDT
- Forecast office
- GRB
- Source
- NOAA / NWS
Daily Outlook
This Week in Mattoon
Thursday looks like the warmest upcoming period in Mattoon at 73 degrees F.
Friday Night is the coolest period ahead with temperatures near 38 degrees F.
The strongest winds are forecast for Thursday at about 6 to 14 mph SSE.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 19, 2026 12:06 AM CDT
- Coverage
- 4 days
- Time zone
- America/Chicago
- Forecast office
- GRB
- Radar station
- KGRB
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 46.
A chance of rain showers after 7am. Partly sunny, with a high near 73. Chance of precipitation is 30%.
A chance of rain showers before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a high near 65. Chance of precipitation is 70%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 38. Chance of precipitation is 50%.
A chance of rain showers. Partly sunny, with a high near 56. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 22
|
Sunny
|
66°F |
2 to 7 mph
ESE
|
|
Wednesday Night
Apr 22
|
Mostly Clear
|
46°F |
7 mph
SE
|
|
Thursday
Apr 23
|
Chance Rain Showers
|
73°F |
6 to 14 mph
SSE
|
|
Thursday Night
Apr 23
|
Showers And Thunderstorms Likely
|
55°F |
13 mph
S
|
|
Friday
Apr 24
|
Showers And Thunderstorms Likely
|
65°F |
12 mph
SSW
|
|
Friday Night
Apr 24
|
Chance Showers And Thunderstorms
|
38°F |
12 mph
W
|
|
Saturday
Apr 25
|
Chance Rain Showers
|
56°F |
12 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Mattoon.