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.

Fog/Mist

73°F

23°C

Humidity 96%
Wind Speed Calm
Barometer 29.90 in (1011.8 mb)
Dewpoint 72°F (22°C)
Visibility 4.00 mi
Last update 28 Jun 3:53 am CDT
Extended Forecast for

Westfield IL

Heat Advisory June 29, 11:00am until July 3, 12:00am
Dense Fog Advisory until June 28, 08:00am
Click here for hazard details and duration
Heat Advisory
Dense Fog Advisory
  •  
    Dense Fog Advisory until June 28, 08:00am

    NOW until 8:00am Sun

    Dense Fog Advisory

  • Overnight

    Low: 69 °F

    Areas Fog

  • Sunday

    Sunday: Areas of fog before 9am. Otherwise, partly sunny, with a high near 89. Heat index values as high as 100. Calm wind becoming south around 6 mph in the morning.

    High: 89 °F

    Areas Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. South southeast wind around 7 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 92. Heat index values as high as 106. South wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 92 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 73. South wind 6 to 10 mph, with gusts as high as 17 mph.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. South southwest wind 6 to 9 mph, with gusts as high as 17 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 73. South southwest wind 5 to 8 mph, with gusts as high as 15 mph.

    Low: 73 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

Overnight
Areas of fog. Otherwise, mostly cloudy, with a low around 69. Calm wind.
Sunday
Areas of fog before 9am. Otherwise, partly sunny, with a high near 89. Heat index values as high as 100. Calm wind becoming south around 6 mph in the morning.
Sunday Night
Mostly clear, with a low around 73. South southeast wind around 7 mph.
Monday
Mostly sunny, with a high near 92. Heat index values as high as 106. South wind 6 to 11 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 73. South wind 6 to 10 mph, with gusts as high as 17 mph.
Tuesday
Sunny, with a high near 93. South southwest wind 6 to 9 mph, with gusts as high as 17 mph.
Tuesday Night
Clear, with a low around 73. South southwest wind 5 to 8 mph, with gusts as high as 15 mph.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
Sunny, with a high near 92.
Thursday Night
Mostly clear, with a low around 74.
Friday
A chance of showers and thunderstorms. Sunny, with a high near 91.
Friday Night
Partly cloudy, with a low around 72.
Independence Day
Sunny, with a high near 90.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Westfield IL
 39.45°N 87.99°W (Elev. 751 ft)
Last Update:
2:36 am CDT Jun 28, 2026
Forecast Valid:
4am CDT Jun 28, 2026-6pm CDT Jul 4, 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