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

Hazardous Weather Conditions

Current conditions at

Sparta Community-Hunter Field Airport (KSAR)

Lat: 38.15°NLon: 89.7°WElev: 528ft.

Fair

66°F

19°C

Humidity 61%
Wind Speed Calm
Barometer 29.90 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 21 Mar 9:55 am CDT
Extended Forecast for

Marissa IL

  • Today

    Today: Sunny, with a high near 85. Light and variable wind becoming south around 6 mph in the afternoon.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 62. South wind 5 to 10 mph, with gusts as high as 23 mph.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 86. South wind 9 to 15 mph.

    High: 86 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 39. Breezy, with a north wind 13 to 21 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

    Low: 39 °F

    Chance
    Showers and
    Breezy

  • Monday

    Monday: Mostly sunny, with a high near 57. North wind 8 to 10 mph.

    High: 57 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 71.

    High: 71 °F

    Slight Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 85. Light and variable wind becoming south around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 62. South wind 5 to 10 mph, with gusts as high as 23 mph.
Sunday
Mostly sunny, with a high near 86. South wind 9 to 15 mph.
Sunday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 39. Breezy, with a north wind 13 to 21 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 57. North wind 8 to 10 mph.
Monday Night
Mostly cloudy, with a low around 40.
Tuesday
Partly sunny, with a high near 61.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 44.
Wednesday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 71.
Wednesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 55.
Thursday
A 20 percent chance of showers. Sunny, with a high near 80.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 47.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 58.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marissa IL
 38.25°N 89.74°W (Elev. 459 ft)
Last Update:
9:41 am CDT Mar 21, 2026
Forecast Valid:
10am CDT Mar 21, 2026-6pm CDT Mar 27, 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