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.

Thunderstorm

75°F

24°C

Humidity 99%
Wind Speed SW 7 mph
Barometer 30.01 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Last update 15 Oct 12:35 pm CDT
Extended Forecast for

Sparta IL

  • This Afternoon

    This Afternoon: Showers and thunderstorms likely before 4pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 85. Southwest wind 10 to 13 mph. Chance of precipitation is 70%.

    High: 85 °F

    T-storms
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before 3am, then a chance of showers. Increasing clouds, with a low around 47. Northwest wind 7 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    Low: 47 °F

    Showers
    Likely

  • Friday

    Friday: Cloudy through mid morning, then 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

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 37. North wind 9 to 15 mph, with gusts as high as 23 mph.

    Low: 37 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 59. Northeast wind 3 to 7 mph.

    High: 59 °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
Showers and thunderstorms likely before 4pm, then showers likely and possibly a thunderstorm after 4pm. Partly sunny, with a high near 85. Southwest wind 10 to 13 mph. Chance of precipitation is 70%.
Tonight
Showers and thunderstorms likely before 3am, then a chance of showers. Increasing clouds, with a low around 47. Northwest wind 7 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Friday
Cloudy through mid morning, then 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 37. North wind 9 to 15 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 59. 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 41.
Tuesday
Sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sparta IL
 38.16°N 89.72°W (Elev. 489 ft)
Last Update:
11:21 am CDT Oct 15, 2026
Forecast Valid:
1pm CDT Oct 15, 2026-6pm CDT Oct 21, 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