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.

Fair

69°F

21°C

Humidity 35%
Wind Speed W 7 mph
Barometer 29.73 in
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 6 Jan 3:35 pm CST
Extended Forecast for

Sparta IL

  • Tonight

    Tonight: Mostly clear, with a low around 35. West wind around 6 mph becoming calm after midnight.

    Low: 35 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 59. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 59 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 45. Southeast wind 6 to 9 mph.

    Low: 45 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Rain. High near 64. South wind 9 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.

    High: 64 °F

    Rain

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 52. South wind 9 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.

    Low: 52 °F

    Showers
    Likely then
    Chance Rain

  • Friday

    Friday: A 20 percent chance of rain after noon. Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny
    then Slight
    Chance Rain

  • Friday Night

    Friday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 42.

    Low: 42 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 35. West wind around 6 mph becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 59. Calm wind becoming south 5 to 7 mph in the afternoon.
Wednesday Night
Increasing clouds, with a low around 45. Southeast wind 6 to 9 mph.
Thursday
Rain. High near 64. South wind 9 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Thursday Night
Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 52. South wind 9 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 60%.
Friday
A 20 percent chance of rain after noon. Partly sunny, with a high near 57.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 42.
Saturday
Partly sunny, with a high near 48.
Saturday Night
Partly cloudy, with a low around 26.
Sunday
Mostly sunny, with a high near 39.
Sunday Night
Mostly clear, with a low around 26.
Monday
Sunny, with a high near 48.
Monday Night
Partly cloudy, with a low around 31.
Tuesday
Mostly sunny, with a high near 49.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sparta IL
 38.16°N 89.72°W (Elev. 489 ft)
Last Update:
3:16 pm CST Jan 6, 2026
Forecast Valid:
3pm CST Jan 6, 2026-6pm CST Jan 13, 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