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.

A Few Clouds

81°F

27°C

Humidity 69%
Wind Speed E 3 mph
Barometer 30.00 in (1015.4 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 15 Jun 6:54 pm CDT
Extended Forecast for

Argenta IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 68. East northeast wind 5 to 7 mph.

    Low: 68 °F

    Mostly Cloudy

  • Monday

    Monday: Isolated showers and thunderstorms after 1pm. Partly sunny, with a high near 83. East wind 5 to 7 mph becoming south southeast in the afternoon. Chance of precipitation is 20%.

    High: 83 °F

    Partly Sunny
    then Isolated
    T-storms

  • Monday Night

    Monday Night: Isolated showers and thunderstorms before 10pm. Mostly cloudy, with a low around 66. South wind 3 to 7 mph. Chance of precipitation is 20%.

    Low: 66 °F

    Isolated
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 88. Southwest wind 6 to 9 mph.

    High: 88 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. South southwest wind 8 to 10 mph, with gusts as high as 16 mph.

    Low: 70 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 85. South southwest wind 13 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 85 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 66. Southwest wind 10 to 14 mph, with gusts as high as 20 mph.

    Low: 66 °F

    Chance
    T-storms

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 68. East northeast wind 5 to 7 mph.
Monday
Isolated showers and thunderstorms after 1pm. Partly sunny, with a high near 83. East wind 5 to 7 mph becoming south southeast in the afternoon. Chance of precipitation is 20%.
Monday Night
Isolated showers and thunderstorms before 10pm. Mostly cloudy, with a low around 66. South wind 3 to 7 mph. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 88. Southwest wind 6 to 9 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. South southwest wind 8 to 10 mph, with gusts as high as 16 mph.
Wednesday
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 85. South southwest wind 13 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 66. Southwest wind 10 to 14 mph, with gusts as high as 20 mph.
Juneteenth
Mostly sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 70.
Saturday
Sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 74.
Sunday
Sunny, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Argenta IL
 39.99°N 88.82°W (Elev. 676 ft)
Last Update:
6:56 pm CDT Jun 15, 2025
Forecast Valid:
7pm CDT Jun 15, 2025-6pm CDT Jun 22, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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