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.

Mostly Cloudy

76°F

24°C

Humidity 91%
Wind Speed NW 8 mph
Barometer 29.98 in (1014.7 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 16 Aug 8:54 pm CDT
Extended Forecast for

Oreana IL

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 3am. Cloudy, with a low around 67. Northwest wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Showers
    Likely

  • Monday

    Monday: Mostly sunny, with a high near 81. North northwest wind 6 to 10 mph.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 61. North wind around 6 mph becoming calm in the evening.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 83. Calm wind becoming west southwest 5 to 7 mph in the morning.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 67. South wind 3 to 5 mph.

    Low: 67 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80. West wind 5 to 8 mph becoming north in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 80 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 61. Northeast wind 6 to 8 mph.

    Low: 61 °F

    Chance
    T-storms

  • Thursday

    Thursday: Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly before 3am. Cloudy, with a low around 67. Northwest wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Mostly sunny, with a high near 81. North northwest wind 6 to 10 mph.
Monday Night
Partly cloudy, with a low around 61. North wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 83. Calm wind becoming west southwest 5 to 7 mph in the morning.
Tuesday Night
A 50 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 67. South wind 3 to 5 mph.
Wednesday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80. West wind 5 to 8 mph becoming north in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 61. Northeast wind 6 to 8 mph.
Thursday
Partly sunny, with a high near 78.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Sunny, with a high near 79.
Friday Night
Mostly clear, with a low around 60.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 61.
Sunday
Sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Oreana IL
 39.93°N 88.88°W (Elev. 682 ft)
Last Update:
9:37 pm CDT Aug 16, 2026
Forecast Valid:
9pm CDT Aug 16, 2026-6pm CDT Aug 23, 2026
 
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