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.

Partly Cloudy

54°F

12°C

Humidity 83%
Wind Speed E 5 mph
Barometer 30.30 in (1025.9 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 31 Oct 10:54 pm CST
Extended Forecast for

Taylorville IL

  • Overnight

    Overnight: A 20 percent chance of rain. Cloudy, with a low around 58. East southeast wind around 6 mph.

    Low: 58 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A 40 percent chance of rain, mainly before noon. Cloudy, with a high near 63. Southeast wind 6 to 11 mph, with gusts as high as 23 mph.

    High: 63 °F

    Chance Rain

  • Sunday Night

    Sunday Night: A 10 percent chance of rain after 5am. Patchy fog after 1am. Otherwise, cloudy, with a low around 55. Southeast wind around 9 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Cloudy then
    Slight Chance
    Rain and
    Patchy Fog

  • Monday

    Monday: A 30 percent chance of rain before 7am. Patchy fog before 10am. Otherwise, cloudy, with a high near 69. South southeast wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 69 °F

    Chance Rain
    and Patchy
    Fog then
    Cloudy

  • Monday Night

    Monday Night: Cloudy, with a low around 59. South southeast wind 14 to 17 mph, with gusts as high as 25 mph.

    Low: 59 °F

    Cloudy

  • Tuesday

    Tuesday: Rain, mainly after 1pm. High near 73. Breezy, with a south wind 20 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 73 °F

    Breezy.
    Chance Rain
    then Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 54. South wind 7 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 54 °F

    Rain

  • Wednesday

    Wednesday: A 40 percent chance of rain. Partly sunny, with a high near 67.

    High: 67 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of rain. Cloudy, with a low around 58. East southeast wind around 6 mph.
Sunday
A 40 percent chance of rain, mainly before noon. Cloudy, with a high near 63. Southeast wind 6 to 11 mph, with gusts as high as 23 mph.
Sunday Night
A 10 percent chance of rain after 5am. Patchy fog after 1am. Otherwise, cloudy, with a low around 55. Southeast wind around 9 mph, with gusts as high as 20 mph.
Monday
A 30 percent chance of rain before 7am. Patchy fog before 10am. Otherwise, cloudy, with a high near 69. South southeast wind 9 to 15 mph, with gusts as high as 23 mph.
Monday Night
Cloudy, with a low around 59. South southeast wind 14 to 17 mph, with gusts as high as 25 mph.
Tuesday
Rain, mainly after 1pm. High near 73. Breezy, with a south wind 20 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain. Low around 54. South wind 7 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
A 40 percent chance of rain. Partly sunny, with a high near 67.
Wednesday Night
Mostly cloudy, with a low around 47.
Thursday
Partly sunny, with a high near 66.
Thursday Night
Mostly cloudy, with a low around 46.
Friday
Partly sunny, with a high near 64.
Friday Night
Mostly cloudy, with a low around 42.
Saturday
Partly sunny, with a high near 64.
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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:
12:31 am CDT Nov 1, 2026
Forecast Valid:
12am CDT Nov 1, 2026-6pm CST Nov 7, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation