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.

Overcast

77°F

25°C

Humidity 88%
Wind Speed E 7 mph
Barometer 29.94 in (1013.3 mb)
Dewpoint 73°F (23°C)
Visibility 9.00 mi
Heat Index78°F (26°C)
Last update 27 Jun 11:54 am CDT
Extended Forecast for

Argenta IL

Heat Advisory June 28, 01:00pm until June 28, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80. East wind around 7 mph.

    High: 80 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 1am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 69. East wind 3 to 6 mph.

    Low: 69 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms and
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 88. South southeast wind 5 to 11 mph, with gusts as high as 15 mph.

    High: 88 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. South southeast wind 9 to 11 mph, with gusts as high as 17 mph.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 92. South southwest wind 9 to 16 mph, with gusts as high as 22 mph.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 74. South wind 10 to 15 mph, with gusts as high as 21 mph.

    Low: 74 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. South southwest wind 9 to 14 mph, with gusts as high as 18 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 74.

    Low: 74 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80. East wind around 7 mph.
Tonight
A 20 percent chance of showers and thunderstorms after 1am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 69. East wind 3 to 6 mph.
Sunday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 88. South southeast wind 5 to 11 mph, with gusts as high as 15 mph.
Sunday Night
Mostly clear, with a low around 73. South southeast wind 9 to 11 mph, with gusts as high as 17 mph.
Monday
Sunny, with a high near 92. South southwest wind 9 to 16 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 74. South wind 10 to 15 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 93. South southwest wind 9 to 14 mph, with gusts as high as 18 mph.
Tuesday Night
Clear, with a low around 74.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Sunny, with a high near 92.
Thursday Night
Mostly clear, with a low around 73.
Friday
A chance of showers and thunderstorms. Sunny, with a high near 90.
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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:
12:05 pm CDT Jun 27, 2026
Forecast Valid:
12pm CDT Jun 27, 2026-6pm CDT Jul 3, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation