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

62°F

17°C

Humidity 29%
Wind Speed E 3 mph
Barometer 30.23 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 24 Mar 3:15 pm CDT
Extended Forecast for

Marissa IL

  • Tonight

    Tonight: Partly cloudy, with a low around 43. Southeast wind 3 to 6 mph.

    Low: 43 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 75. Light south wind increasing to 6 to 11 mph in the morning.

    High: 75 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62. South wind around 11 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86. Southwest wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Rain, mainly after 1am. Low around 44. South wind 11 to 16 mph becoming north after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 80%.

    Low: 44 °F

    Chance Rain
    then Rain

  • Friday

    Friday: A 50 percent chance of rain, mainly before 1pm. Mostly cloudy, with a high near 50.

    High: 50 °F

    Chance Rain

  • Friday Night

    Friday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 43. Southeast wind 3 to 6 mph.
Wednesday
Sunny, with a high near 75. Light south wind increasing to 6 to 11 mph in the morning.
Wednesday Night
Mostly clear, with a low around 62. South wind around 11 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 86. Southwest wind 10 to 15 mph, with gusts as high as 23 mph.
Thursday Night
Rain, mainly after 1am. Low around 44. South wind 11 to 16 mph becoming north after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 80%.
Friday
A 50 percent chance of rain, mainly before 1pm. Mostly cloudy, with a high near 50.
Friday Night
Mostly clear, with a low around 31.
Saturday
Sunny, with a high near 57.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Partly sunny, with a high near 63.
Sunday Night
Mostly cloudy, with a low around 49.
Monday
Mostly sunny, with a high near 77.
Monday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 58.
Tuesday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 77.
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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:
2:56 pm CDT Mar 24, 2026
Forecast Valid:
3pm CDT Mar 24, 2026-6pm CDT Mar 31, 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