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

44°F

7°C

Humidity 64%
Wind Speed E 7 mph
Barometer 29.80 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 25 Feb 11:55 pm CST
Extended Forecast for

Marissa IL

  • Overnight

    Overnight: A 40 percent chance of rain, mainly before 4am. Mostly cloudy, with a low around 36. Northeast wind 6 to 9 mph.

    Low: 36 °F

    Chance Rain

  • Thursday

    Thursday: Partly sunny, with a high near 55. East wind 5 to 8 mph becoming calm in the afternoon.

    High: 55 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 36. Calm wind becoming south around 5 mph after midnight.

    Low: 36 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 68. Southwest wind 5 to 10 mph.

    High: 68 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42. South wind 6 to 8 mph becoming north after midnight.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before midnight. Partly cloudy, with a low around 33.

    Low: 33 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of rain before noon, then a chance of rain and snow. Cloudy, with a high near 46. Chance of precipitation is 40%.

    High: 46 °F

    Slight Chance
    Rain then
    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Rain and snow likely before midnight, then rain, snow, and freezing rain likely. Cloudy, with a low around 31. Chance of precipitation is 70%.

    Low: 31 °F

    Wintry Mix
    Likely

Detailed Forecast

Overnight
A 40 percent chance of rain, mainly before 4am. Mostly cloudy, with a low around 36. Northeast wind 6 to 9 mph.
Thursday
Partly sunny, with a high near 55. East wind 5 to 8 mph becoming calm in the afternoon.
Thursday Night
Mostly clear, with a low around 36. Calm wind becoming south around 5 mph after midnight.
Friday
Sunny, with a high near 68. Southwest wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 42. South wind 6 to 8 mph becoming north after midnight.
Saturday
Sunny, with a high near 64.
Saturday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 33.
Sunday
A slight chance of rain before noon, then a chance of rain and snow. Cloudy, with a high near 46. Chance of precipitation is 40%.
Sunday Night
Rain and snow likely before midnight, then rain, snow, and freezing rain likely. Cloudy, with a low around 31. Chance of precipitation is 70%.
Monday
A chance of rain and snow before noon, then a slight chance of rain. Cloudy, with a high near 40. Chance of precipitation is 30%.
Monday Night
A 40 percent chance of rain. Cloudy, with a low around 30.
Tuesday
A 50 percent chance of rain. Cloudy, with a high near 46.
Tuesday Night
A 40 percent chance of rain. Cloudy, with a low around 35.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 53.
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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 CST Feb 25, 2026
Forecast Valid:
12am CST Feb 26, 2026-6pm CST Mar 4, 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