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.

Overcast

55°F

13°C

Humidity 96%
Wind Speed NW 13 G 20 mph
Barometer 29.96 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 7 Mar 2:35 pm CST
Extended Forecast for

Marissa IL

  • This Afternoon

    This Afternoon: Patchy drizzle before 4pm. Cloudy, with a high near 64. Northwest wind 13 to 17 mph, with gusts as high as 28 mph.

    High: 64 °F

    Patchy
    Drizzle

  • Tonight

    Tonight: Partly cloudy, with a low around 38. Northwest wind 6 to 11 mph becoming light west after midnight.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 65. Southwest wind 3 to 7 mph.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 45. South wind 6 to 8 mph.

    Low: 45 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 75. South wind 7 to 15 mph, with gusts as high as 23 mph.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 79. Chance of precipitation is 40%.

    High: 79 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 56. Breezy. Chance of precipitation is 80%.

    Low: 56 °F

    Showers and
    Breezy

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 68. Chance of precipitation is 100%.

    High: 68 °F

    Showers

Detailed Forecast

This Afternoon
Patchy drizzle before 4pm. Cloudy, with a high near 64. Northwest wind 13 to 17 mph, with gusts as high as 28 mph.
Tonight
Partly cloudy, with a low around 38. Northwest wind 6 to 11 mph becoming light west after midnight.
Sunday
Sunny, with a high near 65. Southwest wind 3 to 7 mph.
Sunday Night
Clear, with a low around 45. South wind 6 to 8 mph.
Monday
Sunny, with a high near 75. South wind 7 to 15 mph, with gusts as high as 23 mph.
Monday Night
Mostly clear, with a low around 61.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 79. Chance of precipitation is 40%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 56. Breezy. Chance of precipitation is 80%.
Wednesday
Showers and possibly a thunderstorm. High near 68. Chance of precipitation is 100%.
Wednesday Night
A 30 percent chance of showers before midnight. Partly cloudy, with a low around 32.
Thursday
Sunny, with a high near 53.
Thursday Night
Mostly cloudy, with a low around 41.
Friday
Partly sunny, with a high near 65.
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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:
2:11 pm CST Mar 7, 2026
Forecast Valid:
2pm CST Mar 7, 2026-6pm CDT Mar 13, 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