National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Taylorville, Taylorville Municipal Airport (KTAZ)

Lat: 39.53°NLon: 89.33°WElev: 623ft.

Fair

70°F

21°C

Humidity 94%
Wind Speed NA
Barometer 30.03 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 16 Jun 12:23 am CDT
Extended Forecast for

Assumption IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 68. Light east wind.

    Low: 68 °F

    Mostly Cloudy

  • Monday

    Monday: Isolated showers, then scattered showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. Light and variable wind becoming southeast around 6 mph in the morning. Chance of precipitation is 30%.

    High: 82 °F

    Isolated
    Showers then
    Scattered
    T-storms

  • Monday Night

    Monday Night: Isolated showers and thunderstorms before 10pm. Mostly cloudy, with a low around 66. South southeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 20%.

    Low: 66 °F

    Isolated
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 88. Southwest wind 3 to 6 mph.

    High: 88 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 70. South southwest wind 5 to 8 mph, with gusts as high as 15 mph.

    Low: 70 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 85. South southwest wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 85 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 66. South southwest wind 7 to 10 mph, with gusts as high as 17 mph.

    Low: 66 °F

    Chance
    T-storms

  • Juneteenth

    Juneteenth: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 68. Light east wind.
Monday
Isolated showers, then scattered showers and thunderstorms after 1pm. Mostly cloudy, with a high near 82. Light and variable wind becoming southeast around 6 mph in the morning. Chance of precipitation is 30%.
Monday Night
Isolated showers and thunderstorms before 10pm. Mostly cloudy, with a low around 66. South southeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 20%.
Tuesday
Mostly sunny, with a high near 88. Southwest wind 3 to 6 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 70. South southwest wind 5 to 8 mph, with gusts as high as 15 mph.
Wednesday
Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 85. South southwest wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 66. South southwest wind 7 to 10 mph, with gusts as high as 17 mph.
Juneteenth
Mostly sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 70.
Saturday
Sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 73.
Sunday
Sunny, with a high near 91.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Assumption IL
 39.51°N 89.05°W (Elev. 636 ft)
Last Update:
12:11 am CDT Jun 16, 2025
Forecast Valid:
12am CDT Jun 16, 2025-6pm CDT Jun 22, 2025
 
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