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.

Thunderstorm in Vicinity Light Rain and Breezy

74°F

23°C

Humidity 91%
Wind Speed N 22 G 32 mph
Barometer 29.95 in (1013.7 mb)
Dewpoint 71°F (22°C)
Visibility 8.00 mi
Last update 19 Aug 9:54 pm CDT
Extended Forecast for

2 Miles ESE Taylorville IL

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 1am. Patchy fog after 1am. Low around 66. Light north northeast wind. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Showers then
    Chance
    T-storms and
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 83. Northeast wind 3 to 6 mph.

    High: 83 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 62. Light east northeast wind.

    Low: 62 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly clear, with a low around 64. Calm wind. Chance of precipitation is 30%.

    Low: 64 °F

    Mostly Clear
    then Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 84. Light west northwest wind becoming north northwest 5 to 9 mph in the morning. Winds could gust as high as 15 mph.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms, mainly before 1am. Patchy fog after 1am. Low around 66. Light north northeast wind. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 83. Northeast wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around 62. Light east northeast wind.
Friday
Sunny, with a high near 84. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly clear, with a low around 64. Calm wind. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 84. Light west northwest wind becoming north northwest 5 to 9 mph in the morning. Winds could gust as high as 15 mph.
Saturday Night
Mostly clear, with a low around 62. North northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Mostly sunny, with a high near 86.
Tuesday Night
Partly cloudy, with a low around 65.
Wednesday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ESE Taylorville IL
 39.52°N 89.25°W (Elev. 600 ft)
Last Update:
9:37 pm CDT Aug 19, 2026
Forecast Valid:
10pm CDT Aug 19, 2026-6pm CDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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