Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Overcast

46°F

8°C

Humidity 58%
Wind Speed S 3 mph
Barometer 30.24 in (1024.6 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 12 Feb 2:54 pm CST
Extended Forecast for

2 Miles ENE Harristown IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 49. Southeast wind around 5 mph.

    High: 49 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 30. South southeast wind 3 to 6 mph.

    Low: 30 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 55. South southwest wind 6 to 14 mph, with gusts as high as 20 mph.

    High: 55 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 33. South wind 3 to 6 mph.

    Low: 33 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 30 percent chance of rain after noon.  Cloudy, with a high near 51. South southeast wind 3 to 7 mph.

    High: 51 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly before midnight.  Mostly cloudy, with a low around 40. Southeast wind 6 to 8 mph becoming east northeast after midnight.  Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 40 °F

    Rain Likely

  • Sunday

    Sunday: Mostly sunny, with a high near 57. Northeast wind 7 to 9 mph.

    High: 57 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 49. Southeast wind around 5 mph.
Tonight
Mostly cloudy, with a low around 30. South southeast wind 3 to 6 mph.
Friday
Sunny, with a high near 55. South southwest wind 6 to 14 mph, with gusts as high as 20 mph.
Friday Night
Increasing clouds, with a low around 33. South wind 3 to 6 mph.
Saturday
A 30 percent chance of rain after noon. Cloudy, with a high near 51. South southeast wind 3 to 7 mph.
Saturday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 40. Southeast wind 6 to 8 mph becoming east northeast after midnight. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Mostly sunny, with a high near 57. Northeast wind 7 to 9 mph.
Sunday Night
Mostly clear, with a low around 34.
Washington's Birthday
Partly sunny, with a high near 58.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
Mostly cloudy, with a high near 61.
Tuesday Night
Mostly cloudy, with a low around 52.
Wednesday
Mostly cloudy, with a high near 67. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Harristown IL
 39.84°N 89.03°W (Elev. 666 ft)
3:17 pm CST Feb 12, 2026
3pm CST Feb 12, 2026-6pm CST Feb 18, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database