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.

A Few Clouds

81°F

27°C

Humidity 57%
Wind Speed Vrbl 3 mph
Barometer 29.96 in (1013.9 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 11 Sep 1:54 pm CDT
Extended Forecast for

Taylorville IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 84. Southeast wind around 6 mph.

    High: 84 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 90. Calm wind becoming west southwest around 6 mph in the morning.

    High: 90 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 87. Calm wind becoming north 5 to 7 mph in the afternoon.

    High: 87 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 61. North northeast wind around 7 mph.

    Low: 61 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 85. Southeast wind 8 to 10 mph, with gusts as high as 15 mph.

    High: 85 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 84. Southeast wind around 6 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 65. Calm wind.
Saturday
Mostly sunny, with a high near 90. Calm wind becoming west southwest around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 66. Calm wind.
Sunday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 87. Calm wind becoming north 5 to 7 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 61. North northeast wind around 7 mph.
Monday
Mostly sunny, with a high near 85. Southeast wind 8 to 10 mph, with gusts as high as 15 mph.
Monday Night
Mostly clear, with a low around 67.
Tuesday
Sunny, with a high near 93.
Tuesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 68.
Wednesday
A chance of showers. Mostly sunny, with a high near 90.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 67.
Thursday
A chance of showers. Mostly sunny, with a high near 85.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Taylorville IL
 39.5°N 89.25°W (Elev. 591 ft)
Last Update:
1:26 pm CDT Sep 11, 2026
Forecast Valid:
2pm CDT Sep 11, 2026-6pm CDT Sep 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