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

74°F

23°C

Humidity 97%
Wind Speed S 6 mph
Barometer 29.90 in (1011.7 mb)
Dewpoint 73°F (23°C)
Visibility 8.00 mi
Last update 28 Jun 1:53 am CDT
Extended Forecast for

Humboldt IL

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

  • Overnight

    Overnight: Areas of fog. Otherwise, mostly cloudy, with a low around 70. Light south southeast wind.

    Low: 70 °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 5 to 7 mph in the morning.

    High: 89 °F

    Areas Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. South wind around 8 mph.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 92. Heat index values as high as 106. South southwest wind 7 to 11 mph, with gusts as high as 20 mph.

    High: 92 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming clear, with a low around 74. South wind 7 to 10 mph, with gusts as high as 17 mph.

    Low: 74 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 93. South southwest wind 7 to 10 mph, with gusts as high as 17 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 74. South southwest wind 6 to 9 mph, with gusts as high as 15 mph.

    Low: 74 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Overnight
Areas of fog. Otherwise, mostly cloudy, with a low around 70. Light south southeast 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 5 to 7 mph in the morning.
Sunday Night
Mostly clear, with a low around 74. South wind around 8 mph.
Monday
Mostly sunny, with a high near 92. Heat index values as high as 106. South southwest wind 7 to 11 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, then gradually becoming clear, with a low around 74. South wind 7 to 10 mph, with gusts as high as 17 mph.
Tuesday
Sunny, with a high near 93. South southwest wind 7 to 10 mph, with gusts as high as 17 mph.
Tuesday Night
Clear, with a low around 74. South southwest wind 6 to 9 mph, with gusts as high as 15 mph.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Sunny, with a high near 94.
Thursday Night
Mostly clear, with a low around 74.
Friday
A chance of showers and thunderstorms. Sunny, with a high near 93.
Friday Night
Partly cloudy, with a low around 72.
Independence Day
Sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Humboldt IL
 39.6°N 88.32°W (Elev. 653 ft)
Last Update:
2:11 am CDT Jun 28, 2026
Forecast Valid:
2am CDT Jun 28, 2026-6pm CDT Jul 4, 2026
 
Forecast Discussion
 
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Additional Resources

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