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.

Mostly Cloudy

69°F

21°C

Humidity 82%
Wind Speed S 16 G 24 mph
Barometer 29.82 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 9 Mar 5:15 pm CDT
Extended Forecast for

Marissa IL

  • Tonight

    Tonight: Partly cloudy, with a low around 61. South wind 9 to 14 mph, with gusts as high as 23 mph.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 79. South wind 8 to 17 mph, with gusts as high as 25 mph.

    High: 79 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 59. South wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.

    Low: 59 °F

    Chance
    Showers then
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. Temperature rising to near 66 by 10am, then falling to around 51 during the remainder of the day. South wind 15 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%.

    High: 66 °F⇓

    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33. North wind 8 to 18 mph, with gusts as high as 26 mph.

    Low: 33 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 53.

    High: 53 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 64.

    High: 64 °F

    Mostly Cloudy

  • Friday Night

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

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 61. South wind 9 to 14 mph, with gusts as high as 23 mph.
Tuesday
Partly sunny, with a high near 79. South wind 8 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 59. South wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. Temperature rising to near 66 by 10am, then falling to around 51 during the remainder of the day. South wind 15 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%.
Wednesday Night
Mostly cloudy, with a low around 33. North wind 8 to 18 mph, with gusts as high as 26 mph.
Thursday
Sunny, with a high near 53.
Thursday Night
Mostly cloudy, with a low around 43.
Friday
Mostly cloudy, with a high near 64.
Friday Night
Mostly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
Mostly clear, with a low around 52.
Sunday
A 50 percent chance of rain. Partly sunny, with a high near 65.
Sunday Night
A chance of rain and snow. Partly cloudy, with a low around 29. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 42.
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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:
3:11 pm CDT Mar 9, 2026
Forecast Valid:
5pm CDT Mar 9, 2026-6pm CDT Mar 16, 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