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.

Mostly Cloudy

26°F

-3°C

Humidity 66%
Wind Speed S 15 mph
Barometer 29.88 in (1012.7 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 5 Dec 6:54 pm CST
Extended Forecast for

Oreana IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 21. South wind 8 to 11 mph becoming west after midnight. Winds could gust as high as 17 mph.

    Low: 21 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 32. West northwest wind 5 to 8 mph becoming south southeast in the afternoon.

    High: 32 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Snow likely, mainly after midnight. Mostly cloudy, with a low around 25. Southeast wind 5 to 9 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 25 °F

    Slight Chance
    Snow then
    Snow Likely

  • Sunday

    Sunday: Snow likely before noon. Mostly cloudy, with a high near 32. South southeast wind 9 to 14 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 32 °F

    Snow Likely
    then Mostly
    Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 9. North wind 7 to 13 mph, with gusts as high as 16 mph.

    Low: 9 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 24. North northeast wind around 6 mph becoming south southeast in the afternoon.

    High: 24 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 13. South southwest wind 6 to 16 mph, with gusts as high as 22 mph.

    Low: 13 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 30. Breezy.

    Low: 30 °F

    Mostly Cloudy
    then Chance
    Rain and
    Breezy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 21. South wind 8 to 11 mph becoming west after midnight. Winds could gust as high as 17 mph.
Saturday
Mostly cloudy, with a high near 32. West northwest wind 5 to 8 mph becoming south southeast in the afternoon.
Saturday Night
Snow likely, mainly after midnight. Mostly cloudy, with a low around 25. Southeast wind 5 to 9 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday
Snow likely before noon. Mostly cloudy, with a high near 32. South southeast wind 9 to 14 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday Night
Mostly cloudy, with a low around 9. North wind 7 to 13 mph, with gusts as high as 16 mph.
Monday
Mostly sunny, with a high near 24. North northeast wind around 6 mph becoming south southeast in the afternoon.
Monday Night
Partly cloudy, with a low around 13. South southwest wind 6 to 16 mph, with gusts as high as 22 mph.
Tuesday
Partly sunny, with a high near 38.
Tuesday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 30. Breezy.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 39. Breezy.
Wednesday Night
Mostly cloudy, with a low around 19.
Thursday
Mostly cloudy, with a high near 32.
Thursday Night
Mostly cloudy, with a low around 14.
Friday
Partly sunny, with a high near 23.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Oreana IL
 39.95°N 88.88°W (Elev. 682 ft)
Last Update:
6:36 pm CST Dec 5, 2025
Forecast Valid:
7pm CST Dec 5, 2025-6pm CST Dec 12, 2025
 
Forecast Discussion
 
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Additional Resources

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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