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.

Overcast

77°F

25°C

Humidity 71%
Wind Speed NE 6 mph
Barometer 30.04 in (1016.6 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 14 Oct 4:54 pm CDT
Extended Forecast for

Ohlman IL

  • Tonight

    Tonight: A 30 percent chance of showers, mainly after 5am. Increasing clouds, with a low around 63. Calm wind becoming northeast around 5 mph after midnight.

    Low: 63 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 1pm, then a chance of showers and thunderstorms after 1pm. High near 80. East wind 5 to 9 mph becoming south in the afternoon. Chance of precipitation is 80%.

    High: 80 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 48. Southwest wind 7 to 17 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 50%.

    Low: 48 °F

    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 55. Breezy, with a northwest wind 17 to 20 mph, with gusts as high as 30 mph.

    High: 55 °F

    Mostly Cloudy
    and Breezy
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 38. North wind 8 to 13 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 61.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 36.

    Low: 36 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly after 5am. Increasing clouds, with a low around 63. Calm wind becoming northeast around 5 mph after midnight.
Thursday
Showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 1pm, then a chance of showers and thunderstorms after 1pm. High near 80. East wind 5 to 9 mph becoming south in the afternoon. Chance of precipitation is 80%.
Thursday Night
A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 48. Southwest wind 7 to 17 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 50%.
Friday
A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 55. Breezy, with a northwest wind 17 to 20 mph, with gusts as high as 30 mph.
Friday Night
Partly cloudy, with a low around 38. North wind 8 to 13 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 61.
Saturday Night
Clear, with a low around 36.
Sunday
Sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 40.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Mostly clear, with a low around 49.
Wednesday
Sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ohlman IL
 39.34°N 89.23°W (Elev. 682 ft)
Last Update:
5:36 pm CDT Oct 14, 2026
Forecast Valid:
5pm CDT Oct 14, 2026-6pm CDT Oct 21, 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