National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Mattoon / Charleston, Coles County Memorial Airport (KMTO)

Lat: 39.48°NLon: 88.28°WElev: 722ft.

Overcast

69°F

21°C

Humidity 87%
Wind Speed E 5 mph
Barometer 29.94 in (1013.2 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 27 May 12:53 am CDT
Extended Forecast for

Mattoon IL

  • Overnight

    Overnight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Cloudy, with a low around 65. Northeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly before 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 79. North northeast wind around 6 mph.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. East northeast wind around 5 mph becoming calm.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 81. Northeast wind 7 to 9 mph, with gusts as high as 15 mph.

    High: 81 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 59. East wind around 8 mph, with gusts as high as 15 mph.

    Low: 59 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 77. East wind 6 to 8 mph.

    High: 77 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. East wind 3 to 5 mph.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Cloudy, with a low around 65. Northeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly before 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 79. North northeast wind around 6 mph.
Wednesday Night
Mostly clear, with a low around 60. East northeast wind around 5 mph becoming calm.
Thursday
Mostly sunny, with a high near 81. Northeast wind 7 to 9 mph, with gusts as high as 15 mph.
Thursday Night
Partly cloudy, with a low around 59. East wind around 8 mph, with gusts as high as 15 mph.
Friday
Partly sunny, with a high near 77. East wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around 59. East wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 56.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Mostly clear, with a low around 56.
Monday
Sunny, with a high near 78.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mattoon IL
 39.49°N 88.39°W (Elev. 732 ft)
Last Update:
1:26 am CDT May 27, 2026
Forecast Valid:
1am CDT May 27, 2026-6pm CDT Jun 2, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation