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

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

33°F

1°C

Humidity 75%
Wind Speed S 10 mph
Barometer 29.97 in (1015.5 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 4 Jan 10:54 pm CST
Extended Forecast for

Argenta IL

  • Tonight

    Tonight: Mostly clear, with a low around 31. South southwest wind 10 to 13 mph, with gusts as high as 22 mph.

    Low: 31 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, with a high near 49. South southwest wind 8 to 10 mph, with gusts as high as 17 mph.

    High: 49 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 40. South southeast wind 8 to 11 mph, with gusts as high as 17 mph.

    Low: 40 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 56. South southwest wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 22 mph.

    High: 56 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 33. West wind 5 to 9 mph.

    Low: 33 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 56. West southwest wind 5 to 9 mph becoming south in the afternoon.

    High: 56 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42. South wind around 10 mph, with gusts as high as 15 mph.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Rain likely, mainly after noon. Mostly cloudy, with a high near 55. Chance of precipitation is 60%.

    High: 55 °F

    Chance Rain
    then Rain
    Likely

  • Thursday Night

    Thursday Night: Rain likely, mainly before midnight. Mostly cloudy, with a low around 40. Chance of precipitation is 70%.

    Low: 40 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 31. South southwest wind 10 to 13 mph, with gusts as high as 22 mph.
Monday
Partly sunny, with a high near 49. South southwest wind 8 to 10 mph, with gusts as high as 17 mph.
Monday Night
Mostly cloudy, with a low around 40. South southeast wind 8 to 11 mph, with gusts as high as 17 mph.
Tuesday
Partly sunny, with a high near 56. South southwest wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 22 mph.
Tuesday Night
Partly cloudy, with a low around 33. West wind 5 to 9 mph.
Wednesday
Sunny, with a high near 56. West southwest wind 5 to 9 mph becoming south in the afternoon.
Wednesday Night
Partly cloudy, with a low around 42. South wind around 10 mph, with gusts as high as 15 mph.
Thursday
Rain likely, mainly after noon. Mostly cloudy, with a high near 55. Chance of precipitation is 60%.
Thursday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 40. Chance of precipitation is 70%.
Friday
A 40 percent chance of rain. Partly sunny, with a high near 49.
Friday Night
Mostly cloudy, with a low around 30.
Saturday
Partly sunny, with a high near 39. Breezy.
Saturday Night
Partly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Argenta IL
 39.99°N 88.82°W (Elev. 676 ft)
Last Update:
9:42 pm CST Jan 4, 2026
Forecast Valid:
11pm CST Jan 4, 2026-6pm CST Jan 11, 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