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.

Fair

79°F

26°C

Humidity 54%
Wind Speed SE 6 mph
Barometer 30.06 in (1017.5 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 25 Aug 5:54 pm CDT
Extended Forecast for

Taylorville IL

  • Tonight

    Tonight: Partly cloudy, with a low around 65. East southeast wind 3 to 5 mph.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 88. Light and variable wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 15 mph.

    High: 88 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 63. North northwest wind 3 to 7 mph.

    Low: 63 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 85. Calm wind becoming north northwest 5 to 8 mph in the afternoon.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. North wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. Light east wind.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 65. East southeast wind 3 to 5 mph.
Wednesday
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 88. Light and variable wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 15 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 63. North northwest wind 3 to 7 mph.
Thursday
Sunny, with a high near 85. Calm wind becoming north northwest 5 to 8 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 62. North wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 59. Light east wind.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 65.
Sunday
Mostly sunny, with a high near 90.
Sunday Night
Partly cloudy, with a low around 71.
Monday
Mostly sunny, with a high near 92.
Monday Night
A chance of showers. Partly cloudy, with a low around 71.
Tuesday
Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Taylorville IL
 39.52°N 89.27°W (Elev. 614 ft)
Last Update:
6:36 pm CDT Aug 25, 2026
Forecast Valid:
6pm CDT Aug 25, 2026-6pm CDT Sep 1, 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