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

Hazardous Weather Conditions

Current conditions at

Taylorville, Taylorville Municipal Airport (KTAZ)

Lat: 39.53°NLon: 89.33°WElev: 623ft.

Fair

77°F

25°C

Humidity 89%
Wind Speed SE 6 mph
Barometer 30.03 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 18 Aug 1:57 am CDT
Extended Forecast for

4 Miles SW Stonington IL

Heat Advisory August 18, 02:19am until August 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 18, 02:19am until August 18, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Overnight

    Low: 73 °F

    Partly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 92. Heat index values as high as 103. South wind 5 to 8 mph.

    High: 92 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73. South wind 3 to 5 mph. Chance of precipitation is 20%.

    Low: 73 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. South southwest wind around 6 mph becoming west in the afternoon.

    High: 90 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 71. North wind 3 to 5 mph.

    Low: 71 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 85. North northeast wind 6 to 10 mph.

    High: 85 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64. North northeast wind 6 to 9 mph.

    Low: 64 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Overnight
Partly cloudy, with a low around 73. East southeast wind around 5 mph.
Monday
A 20 percent chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 92. Heat index values as high as 103. South wind 5 to 8 mph.
Monday Night
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73. South wind 3 to 5 mph. Chance of precipitation is 20%.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90. South southwest wind around 6 mph becoming west in the afternoon.
Tuesday Night
Partly cloudy, with a low around 71. North wind 3 to 5 mph.
Wednesday
Mostly sunny, with a high near 85. North northeast wind 6 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 64. North northeast wind 6 to 9 mph.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny, with a high near 86.
Friday Night
Mostly clear, with a low around 65.
Saturday
Sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Stonington IL
 39.61°N 89.24°W (Elev. 623 ft)
Last Update:
1:40 am CDT Aug 18, 2025
Forecast Valid:
2am CDT Aug 18, 2025-6pm CDT Aug 24, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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