Current conditions at
Mattoon / Charleston, Coles County Memorial Airport (KMTO)
Lat: 39.48°NLon: 88.28°WElev: 722ft.
Fair
62°F
17°C
| Humidity | 80% |
| Wind Speed | S 8 mph |
| Barometer | 29.94 in (1013.4 mb) |
| Dewpoint | 56°F (13°C) |
| Visibility | 10.00 mi |
| Last update | 17 Apr 1:53 am CDT |
Extended Forecast for
Martinsville IL
Overnight

Low: 55 °F
Clear
Friday
High: 82 °F
Mostly Sunny
then Slight
Chance
T-stormsFriday Night
Low: 52 °F
Chance
T-storms then
ShowersSaturday

High: 62 °F⇓
Showers
LikelySaturday Night

Low: 37 °F
Partly Cloudy
then Patchy
FrostSunday

High: 60 °F
Patchy Frost
then SunnySunday Night

Low: 36 °F
Mostly Clear
then Patchy
FrostMonday

High: 63 °F
Patchy Frost
then SunnyMonday Night

Low: 48 °F
Mostly Clear
Detailed Forecast
Overnight
Clear, with a low around 55. Calm wind.
Friday
A slight chance of showers and thunderstorms before 2pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 82. South wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 20%.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after midnight. Low around 52. South wind around 15 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
Showers likely, mainly between 7am and 1pm. Mostly cloudy, with a temperature falling to around 54 by 8am. Northwest wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Patchy frost after 3am. Otherwise, mostly clear, with a low around 37. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.
Sunday
Patchy frost before 8am. Otherwise, sunny, with a high near 60. West northwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.
Sunday Night
Patchy frost after 3am. Otherwise, mostly clear, with a low around 36. Northwest wind 5 to 8 mph becoming east northeast after midnight. Winds could gust as high as 16 mph.
Monday
Patchy frost before 8am. Otherwise, sunny, with a high near 63.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Mostly sunny, with a high near 80.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Martinsville IL
39.34°N 87.88°W (Elev. 600 ft)
39.34°N 87.88°W (Elev. 600 ft)
1:26 am CDT Apr 17, 2026
2am CDT Apr 17, 2026-6pm CDT Apr 23, 2026


