National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Partly Cloudy

28°F

-2°C

Humidity 78%
Wind Speed NE 15 mph
Barometer 30.24 in (1024.6 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 7 Feb 12:54 am CST
Extended Forecast for

2 Miles ENE Harristown IL

  • Overnight

    Overnight: Clear, with a low around 13. Wind chill values between 3 and 8. North wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 13 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 28. Wind chill values between 3 and 13. North northeast wind 5 to 7 mph becoming south southeast in the afternoon.

    High: 28 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 21. South southeast wind 6 to 13 mph, with gusts as high as 20 mph.

    Low: 21 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 39. South southeast wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 39 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 25. Southeast wind 5 to 7 mph.

    Low: 25 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 51. South southwest wind 5 to 8 mph.

    High: 51 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 35. South wind around 8 mph.

    Low: 35 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of rain after noon. Mostly cloudy, with a high near 59.

    High: 59 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.

    Low: 35 °F

    Rain Likely

Detailed Forecast

Overnight
Clear, with a low around 13. Wind chill values between 3 and 8. North wind 8 to 11 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 28. Wind chill values between 3 and 13. North northeast wind 5 to 7 mph becoming south southeast in the afternoon.
Saturday Night
Mostly cloudy, with a low around 21. South southeast wind 6 to 13 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 39. South southeast wind 8 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 25. Southeast wind 5 to 7 mph.
Monday
Mostly sunny, with a high near 51. South southwest wind 5 to 8 mph.
Monday Night
Mostly clear, with a low around 35. South wind around 8 mph.
Tuesday
A 30 percent chance of rain after noon. Mostly cloudy, with a high near 59.
Tuesday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 35. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of rain before noon. Partly sunny, with a high near 45.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
Mostly cloudy, with a high near 40.
Thursday Night
Mostly cloudy, with a low around 25.
Friday
Partly sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Harristown IL
 39.84°N 89.03°W (Elev. 666 ft)
Last Update:
9:37 pm CST Feb 6, 2026
Forecast Valid:
1am CST Feb 7, 2026-6pm CST Feb 13, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation