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

49°F

9°C

Humidity 46%
Wind Speed N 10 mph
Barometer 30.40 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 23 Mar 2:55 pm CDT
Extended Forecast for

Marissa IL

  • Tonight

    Tonight: Increasing clouds, with a low around 37. East wind around 7 mph.

    Low: 37 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 61. Southeast wind around 6 mph.

    High: 61 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 43. East wind 3 to 6 mph.

    Low: 43 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. Light south wind increasing to 5 to 10 mph in the morning.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 61. South wind around 10 mph.

    Low: 61 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 43. Breezy. Chance of precipitation is 60%.

    Low: 43 °F

    Chance
    Showers then
    Showers
    Likely and
    Breezy

  • Friday

    Friday: A chance of showers before 1pm, then a slight chance of rain after 1pm. Mostly cloudy, with a high near 52. Chance of precipitation is 50%.

    High: 52 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 37. East wind around 7 mph.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 61. Southeast wind around 6 mph.
Tuesday Night
Partly cloudy, with a low around 43. East wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 74. Light south wind increasing to 5 to 10 mph in the morning.
Wednesday Night
Mostly clear, with a low around 61. South wind around 10 mph.
Thursday
Sunny, with a high near 86.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 43. Breezy. Chance of precipitation is 60%.
Friday
A chance of showers before 1pm, then a slight chance of rain after 1pm. Mostly cloudy, with a high near 52. Chance of precipitation is 50%.
Friday Night
Partly cloudy, with a low around 32.
Saturday
Sunny, with a high near 56.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Partly sunny, with a high near 63.
Sunday Night
Partly cloudy, with a low around 47.
Monday
A 20 percent chance of rain. Mostly sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marissa IL
 38.25°N 89.77°W (Elev. 440 ft)
Last Update:
2:46 pm CDT Mar 23, 2026
Forecast Valid:
3pm CDT Mar 23, 2026-6pm CDT Mar 30, 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