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

59°F

15°C

Humidity 68%
Wind Speed SE 3 mph
Barometer 30.11 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 8 Oct 10:15 pm CDT
Extended Forecast for

Marissa IL

  • Tonight

    Tonight: Clear, with a low around 51. Light and variable wind.

    Low: 51 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 88. Light southeast wind becoming south 5 to 9 mph in the morning.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 58. Southeast wind 3 to 5 mph.

    Low: 58 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 30 percent chance of rain, mainly after 4pm. Cloudy through mid morning, then becoming mostly sunny, with a high near 80. South wind 3 to 8 mph.

    High: 80 °F

    Partly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly between 7pm and 1am. Mostly cloudy, with a low around 59. Northeast wind around 8 mph. Chance of precipitation is 60%.

    Low: 59 °F

    Rain Likely

  • Sunday

    Sunday: A 20 percent chance of rain before 1pm. Partly sunny, with a high near 78.

    High: 78 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 64.

    Low: 64 °F

    Clear

Detailed Forecast

Tonight
Clear, with a low around 51. Light and variable wind.
Friday
Sunny, with a high near 88. Light southeast wind becoming south 5 to 9 mph in the morning.
Friday Night
Increasing clouds, with a low around 58. Southeast wind 3 to 5 mph.
Saturday
A 30 percent chance of rain, mainly after 4pm. Cloudy through mid morning, then becoming mostly sunny, with a high near 80. South wind 3 to 8 mph.
Saturday Night
Rain likely, mainly between 7pm and 1am. Mostly cloudy, with a low around 59. Northeast wind around 8 mph. Chance of precipitation is 60%.
Sunday
A 20 percent chance of rain before 1pm. Partly sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 58.
Columbus Day
Sunny, with a high near 89.
Monday Night
Clear, with a low around 64.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
A 20 percent chance of showers. Mostly sunny, with a high near 81.
Wednesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 60.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marissa IL
 38.23°N 89.74°W (Elev. 495 ft)
Last Update:
10:21 pm CDT Oct 8, 2026
Forecast Valid:
10pm CDT Oct 8, 2026-6pm CDT Oct 15, 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