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

Sparta Community-Hunter Field Airport (KSAR)

Lat: 38.15°NLon: 89.7°WElev: 528ft.

Partly Cloudy

83°F

28°C

Humidity 66%
Wind Speed SW 9 mph
Barometer 29.93 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 15 Oct 4:55 pm CDT
Extended Forecast for

Sparta IL

  • This Afternoon

    This Afternoon: A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85. Southwest wind around 10 mph.

    High: 85 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely before 3am, then a chance of showers. Increasing clouds, with a low around 47. Northwest wind 6 to 11 mph increasing to 12 to 17 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 60%.

    Low: 47 °F

    Showers
    Likely

  • Friday

    Friday: Cloudy, then gradually becoming mostly sunny, with a high near 57. Breezy, with a northwest wind 16 to 21 mph, with gusts as high as 28 mph.

    High: 57 °F

    Decreasing
    Clouds and
    Breezy

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 38. Northwest wind 10 to 15 mph, with gusts as high as 23 mph.

    Low: 38 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 60. Northeast wind 3 to 7 mph.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 34.

    Low: 34 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85. Southwest wind around 10 mph.
Tonight
Showers and thunderstorms likely before 3am, then a chance of showers. Increasing clouds, with a low around 47. Northwest wind 6 to 11 mph increasing to 12 to 17 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 60%.
Friday
Cloudy, then gradually becoming mostly sunny, with a high near 57. Breezy, with a northwest wind 16 to 21 mph, with gusts as high as 28 mph.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 38. Northwest wind 10 to 15 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 60. Northeast wind 3 to 7 mph.
Saturday Night
Clear, with a low around 34.
Sunday
Sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 38.
Monday
Mostly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta IL
 38.14°N 89.74°W (Elev. 449 ft)
Last Update:
2:26 pm CDT Oct 15, 2026
Forecast Valid:
5pm CDT Oct 15, 2026-6pm CDT Oct 22, 2026
 
Forecast Discussion
 
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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