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.

Fair

38°F

3°C

Humidity 93%
Wind Speed Calm
Barometer 30.00 in (1016.0 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 11 Nov 12:54 am CST
Extended Forecast for

Taylorville IL

  • Overnight

    Overnight: Mostly clear, with a low around 43. Light south wind.

    Low: 43 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Increasing clouds, with a high near 65. Light and variable wind becoming west northwest 10 to 15 mph in the morning. Winds could gust as high as 22 mph.

    High: 65 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 39. North northwest wind 8 to 13 mph, with gusts as high as 21 mph.

    Low: 39 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 48. North northwest wind 9 to 16 mph, with gusts as high as 23 mph.

    High: 48 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 30. North northwest wind 6 to 11 mph, with gusts as high as 18 mph.

    Low: 30 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 43. North northwest wind 6 to 11 mph, with gusts as high as 17 mph.

    High: 43 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 24. North northwest wind around 5 mph becoming calm in the evening.

    Low: 24 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 43. Light south wind.
Veterans Day
Increasing clouds, with a high near 65. Light and variable wind becoming west northwest 10 to 15 mph in the morning. Winds could gust as high as 22 mph.
Wednesday Night
Mostly cloudy, with a low around 39. North northwest wind 8 to 13 mph, with gusts as high as 21 mph.
Thursday
Mostly cloudy, with a high near 48. North northwest wind 9 to 16 mph, with gusts as high as 23 mph.
Thursday Night
Partly cloudy, with a low around 30. North northwest wind 6 to 11 mph, with gusts as high as 18 mph.
Friday
Sunny, with a high near 43. North northwest wind 6 to 11 mph, with gusts as high as 17 mph.
Friday Night
Mostly clear, with a low around 24. North northwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 46.
Saturday Night
Mostly clear, with a low around 24.
Sunday
Sunny, with a high near 50.
Sunday Night
Partly cloudy, with a low around 27.
Monday
Sunny, with a high near 50.
Monday Night
Mostly clear, with a low around 28.
Tuesday
Sunny, with a high near 53.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Taylorville IL
 39.54°N 89.27°W (Elev. 587 ft)
Last Update:
12:36 am CST Nov 11, 2026
Forecast Valid:
1am CST Nov 11, 2026-6pm CST Nov 17, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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