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

45°F

7°C

Humidity 93%
Wind Speed E 5 mph
Barometer 29.97 in (1015.0 mb)
Dewpoint 43°F (6°C)
Visibility 6.00 mi
Wind Chill42°F (6°C)
Last update 27 Dec 3:53 am CST
Extended Forecast for

Martinsville IL

Dense Fog Advisory until December 27, 10:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until December 27, 10:00am

    NOW until 10:00am Sat

    Dense Fog Advisory

  • Overnight

    Low: 43 °F

    Patchy Dense
    Fog

  • Saturday

    Saturday: Patchy dense fog before 9am. Otherwise, mostly cloudy, with a high near 56. Southeast wind 5 to 10 mph, with gusts as high as 18 mph.

    High: 56 °F

    Patchy Dense
    Fog then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after midnight. Cloudy, with a temperature rising to around 62 by 3am. South wind around 10 mph, with gusts as high as 22 mph.

    Low: 54 °F⇑

    Cloudy then
    Chance
    Showers

  • Sunday

    Sunday: Showers, mainly after noon. High near 69. Breezy, with a south wind 11 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 69 °F

    Chance
    Showers then
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Showers likely before midnight. Mostly cloudy, with a low around 18. Breezy, with a southwest wind 20 to 26 mph becoming west northwest after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 18 °F

    Breezy.
    Showers
    Likely then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 26. Breezy, with a west northwest wind 21 to 26 mph, with gusts as high as 45 mph.

    High: 26 °F

    Partly Sunny
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 15. West northwest wind 13 to 18 mph, with gusts as high as 32 mph.

    Low: 15 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

Detailed Forecast

Overnight
Patchy dense fog. Otherwise, cloudy, with a low around 43. Northeast wind around 5 mph.
Saturday
Patchy dense fog before 9am. Otherwise, mostly cloudy, with a high near 56. Southeast wind 5 to 10 mph, with gusts as high as 18 mph.
Saturday Night
A 30 percent chance of showers after midnight. Cloudy, with a temperature rising to around 62 by 3am. South wind around 10 mph, with gusts as high as 22 mph.
Sunday
Showers, mainly after noon. High near 69. Breezy, with a south wind 11 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers likely before midnight. Mostly cloudy, with a low around 18. Breezy, with a southwest wind 20 to 26 mph becoming west northwest after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Partly sunny, with a high near 26. Breezy, with a west northwest wind 21 to 26 mph, with gusts as high as 45 mph.
Monday Night
Partly cloudy, with a low around 15. West northwest wind 13 to 18 mph, with gusts as high as 32 mph.
Tuesday
Mostly sunny, with a high near 28.
Tuesday Night
Partly cloudy, with a low around 22.
Wednesday
Partly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 19.
New Year's Day
Mostly sunny, with a high near 28.
Thursday Night
Mostly clear, with a low around 11.
Friday
Mostly sunny, with a high near 27.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Martinsville IL
 39.34°N 87.88°W (Elev. 600 ft)
Last Update:
3:16 am CST Dec 27, 2025
Forecast Valid:
4am CST Dec 27, 2025-6pm CST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation