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

55°F

13°C

Humidity 40%
Wind Speed NW 6 mph
Barometer 30.11 in
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill54°F (12°C)
Last update 18 Apr 6:35 pm CDT
Extended Forecast for

Marissa IL

  • Tonight

    Tonight: Mostly clear, with a low around 38. Northwest wind 6 to 11 mph becoming light and variable after midnight.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 67. West wind 5 to 14 mph, with gusts as high as 25 mph.

    High: 67 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 41. Light and variable wind becoming northeast 5 to 8 mph.

    Low: 41 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 66. Light and variable wind becoming east around 5 mph in the morning.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49. South wind 6 to 8 mph.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers before 1am. Mostly clear, with a low around 55.

    Low: 55 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 38. Northwest wind 6 to 11 mph becoming light and variable after midnight.
Sunday
Sunny, with a high near 67. West wind 5 to 14 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 41. Light and variable wind becoming northeast 5 to 8 mph.
Monday
Sunny, with a high near 66. Light and variable wind becoming east around 5 mph in the morning.
Monday Night
Mostly clear, with a low around 49. South wind 6 to 8 mph.
Tuesday
Sunny, with a high near 77.
Tuesday Night
A 20 percent chance of showers before 1am. Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 75. Chance of precipitation is 70%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 50.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 68.
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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:
5:56 pm CDT Apr 18, 2026
Forecast Valid:
6pm CDT Apr 18, 2026-6pm CDT Apr 25, 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