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.

A Few Clouds

67°F

19°C

Humidity 81%
Wind Speed S 5 mph
Barometer 29.99 in (1015.1 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 20 Jun 1:53 am CDT
Extended Forecast for

2 Miles NE Sullivan IL

Flood Watch June 21, 07:00am until June 22, 01:00am
Click here for hazard details and duration
Flood Watch

  • Overnight

    Overnight: Mostly cloudy, with a low around 64. West wind 3 to 5 mph.

    Low: 64 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of showers before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 80. Northwest wind 3 to 7 mph.

    High: 80 °F

    Slight Chance
    Showers then
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 60. Northwest wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11am. Some of the storms could produce heavy rainfall. High near 76. Southeast wind 7 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 76 °F

    Showers
    Likely then
    Heavy Rain

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 61. South southwest wind 9 to 15 mph becoming north after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 61 °F

    Showers

  • Monday

    Monday: Partly sunny, with a high near 75. North wind 11 to 13 mph, with gusts as high as 20 mph.

    High: 75 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54. North northeast wind 5 to 9 mph.

    Low: 54 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 64. West wind 3 to 5 mph.
Saturday
A 20 percent chance of showers before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 80. Northwest wind 3 to 7 mph.
Saturday Night
Partly cloudy, with a low around 60. Northwest wind around 5 mph becoming calm in the evening.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11am. Some of the storms could produce heavy rainfall. High near 76. Southeast wind 7 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Sunday Night
Showers and possibly a thunderstorm. Low around 61. South southwest wind 9 to 15 mph becoming north after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Monday
Partly sunny, with a high near 75. North wind 11 to 13 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 54. North northeast wind 5 to 9 mph.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Mostly sunny, with a high near 78.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NE Sullivan IL
 39.63°N 88.58°W (Elev. 650 ft)
Last Update:
1:51 am CDT Jun 20, 2026
Forecast Valid:
2am CDT Jun 20, 2026-6pm CDT Jun 26, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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