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Hazardous Weather Conditions

Current conditions at

Decatur Airport (KDEC)

Lat: 39.83°NLon: 88.87°WElev: 670ft.

Fair

78°F

26°C

Humidity 69%
Wind Speed SW 9 mph
Barometer 29.90 in (1011.7 mb)
Dewpoint 67°F (19°C)
Visibility 7.00 mi
Heat Index80°F (27°C)
Last update 13 Oct 9:54 pm CDT
Extended Forecast for

Taylorville IL

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 3am. Increasing clouds, with a low around 70. South wind around 6 mph becoming northwest after midnight.

    Low: 70 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms after 11am. Cloudy, with a high near 78. Light north wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Showers
    Likely then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms, then showers likely after 3am. Mostly cloudy, with a low around 62. East northeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 1pm, then showers likely between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. High near 79. East wind 5 to 9 mph becoming southwest in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 79 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 47. West southwest wind 7 to 12 mph becoming northwest 13 to 18 mph after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 50%.

    Low: 47 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 60. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 31 mph.

    High: 60 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Patchy frost after 5am. Otherwise, mostly clear, with a low around 34. North northwest wind 5 to 10 mph becoming light north after midnight. Winds could gust as high as 17 mph.

    Low: 34 °F

    Partly Cloudy
    then Patchy
    Frost

  • Saturday

    Saturday: Areas of frost before 8am. Otherwise, sunny, with a high near 62.

    High: 62 °F

    Areas Frost
    then Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 37.

    Low: 37 °F

    Clear

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly after 3am. Increasing clouds, with a low around 70. South wind around 6 mph becoming northwest after midnight.
Wednesday
Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms after 11am. Cloudy, with a high near 78. Light north wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A slight chance of showers and thunderstorms, then showers likely after 3am. Mostly cloudy, with a low around 62. East northeast wind around 5 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and possibly a thunderstorm before 1pm, then showers likely between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. High near 79. East wind 5 to 9 mph becoming southwest in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, with a low around 47. West southwest wind 7 to 12 mph becoming northwest 13 to 18 mph after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 50%.
Friday
Mostly sunny, with a high near 60. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 31 mph.
Friday Night
Patchy frost after 5am. Otherwise, mostly clear, with a low around 34. North northwest wind 5 to 10 mph becoming light north after midnight. Winds could gust as high as 17 mph.
Saturday
Areas of frost before 8am. Otherwise, sunny, with a high near 62.
Saturday Night
Clear, with a low around 37.
Sunday
Sunny, with a high near 69.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Mostly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
Mostly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Taylorville IL
 39.52°N 89.27°W (Elev. 614 ft)
Last Update:
9:36 pm CDT Oct 13, 2026
Forecast Valid:
10pm CDT Oct 13, 2026-6pm CDT Oct 20, 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