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

72°F

22°C

Humidity 62%
Wind Speed S 8 mph
Barometer 29.79 in
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 21 Mar 11:55 pm CDT
Extended Forecast for

Marissa IL

  • Overnight

    Overnight: Clear, with a low around 62. South wind 8 to 10 mph, with gusts as high as 23 mph.

    Low: 62 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 88. South wind 8 to 13 mph, with gusts as high as 24 mph.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 38. Breezy, with a north wind 13 to 21 mph, with gusts as high as 33 mph.

    Low: 38 °F

    Chance
    Showers and
    Breezy then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 56. Northeast wind 8 to 13 mph, with gusts as high as 21 mph.

    High: 56 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 40. Northeast wind around 6 mph.

    Low: 40 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain. Partly cloudy, with a low around 56.

    Low: 56 °F

    Slight Chance
    Rain

Detailed Forecast

Overnight
Clear, with a low around 62. South wind 8 to 10 mph, with gusts as high as 23 mph.
Sunday
Sunny, with a high near 88. South wind 8 to 13 mph, with gusts as high as 24 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 38. Breezy, with a north wind 13 to 21 mph, with gusts as high as 33 mph.
Monday
Mostly sunny, with a high near 56. Northeast wind 8 to 13 mph, with gusts as high as 21 mph.
Monday Night
Mostly cloudy, with a low around 40. Northeast wind around 6 mph.
Tuesday
Mostly sunny, with a high near 63.
Tuesday Night
Mostly cloudy, with a low around 45.
Wednesday
Partly sunny, with a high near 73.
Wednesday Night
A 20 percent chance of rain. Partly cloudy, with a low around 56.
Thursday
A 20 percent chance of rain and thunderstorms after 1pm. Sunny, with a high near 83.
Thursday Night
A 30 percent chance of rain and thunderstorms. Partly cloudy, with a low around 45.
Friday
A 40 percent chance of rain. Partly sunny, with a high near 56.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 38.
Saturday
A 20 percent chance of rain. Partly sunny, with a high near 56.
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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:
9:51 pm CDT Mar 21, 2026
Forecast Valid:
12am CDT Mar 22, 2026-6pm CDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation